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source: trunk/python/asapplotter.py@ 2714

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Last change on this file since 2714 was 2714, checked in by Kana Sugimoto, 13 years ago

New Development: No

JIRA Issue: No (a minor fix)

Ready for Test: Yes

Interface Changes: No

What Interface Changed:

Test Programs: unit tests of sdplot

Put in Release Notes: No

Module(s): asapplotter and sdplot

Description: more resetting when new scantable is set to plot.

Property svn:eol-style set to native
Property svn:keywords set to Author Date Id Revision

File size: 80.6 KB

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1	from asap.parameters import rcParams
2	from asap.selector import selector
3	from asap.scantable import scantable
4	from asap.logging import asaplog, asaplog_post_dec
5	import matplotlib.axes
6	from matplotlib.font_manager import FontProperties
7	from matplotlib.text import Text
8	from matplotlib import _pylab_helpers
9
10	import re
11
12	def new_asaplot(visible=None,**kwargs):
13	"""
14	Returns a new asaplot instance based on the backend settings.
15	"""
16	if visible == None:
17	visible = rcParams['plotter.gui']
18
19	backend=matplotlib.get_backend()
20	if not visible:
21	from asap.asaplot import asaplot
22	elif backend == 'TkAgg':
23	from asap.asaplotgui import asaplotgui as asaplot
24	elif backend == 'Qt4Agg':
25	from asap.asaplotgui_qt4 import asaplotgui as asaplot
26	elif backend == 'GTkAgg':
27	from asap.asaplotgui_gtk import asaplotgui as asaplot
28	else:
29	from asap.asaplot import asaplot
30	return asaplot(**kwargs)
31
32	class asapplotter:
33	"""
34	The ASAP plotter.
35	By default the plotter is set up to plot polarisations
36	'colour stacked' and scantables across panels.
37
38	.. note::
39
40	Currenly it only plots 'spectra' not Tsys or
41	other variables.
42
43	"""
44	def __init__(self, visible=None , **kwargs):
45	self._visible = rcParams['plotter.gui']
46	if visible is not None:
47	self._visible = visible
48	self._plotter = None
49	self._inikwg = kwargs
50
51	### plot settings
52	self._colormap = None
53	self._linestyles = None
54	self._fp = FontProperties()
55	self._rows = None
56	self._cols = None
57	self._minmaxx = None
58	self._minmaxy = None
59	self._margins = self.set_margin(refresh=False)
60	self._legendloc = None
61	### scantable plot settings
62	self._plotmode = "spectra"
63	self._panelling = None
64	self._stacking = None
65	self.set_panelling()
66	self.set_stacking()
67	self._hist = rcParams['plotter.histogram']
68	### scantable dependent settings
69	self._data = None
70	self._abcunit = None
71	self._headtext = {'string': None, 'textobj': None}
72	self._selection = selector()
73	self._usermask = []
74	self._maskselection = None
75	self._offset = None
76	self._lmap = None
77	self._title = None
78	self._ordinate = None
79	self._abcissa = None
80	### cursors for page iteration
81	self._startrow = 0
82	self._ipanel = -1
83	self._panelrows = []
84
85	def _translate(self, instr):
86	keys = "s b i p t r".split()
87	if isinstance(instr, str):
88	for key in keys:
89	if instr.lower().startswith(key):
90	return key
91	return None
92
93	@asaplog_post_dec
94	def _reload_plotter(self):
95	if self._plotter is not None:
96	#if not self._plotter.is_dead:
97	# # clear lines and axes
98	# try:
99	# self._plotter.clear()
100	# except: # Can't remove when already killed.
101	# pass
102	if self.casabar_exists():
103	del self._plotter.figmgr.casabar
104	self._plotter.quit()
105	del self._plotter
106	asaplog.push('Loading new plotter')
107	self._plotter = new_asaplot(self._visible,**self._inikwg)
108	self._plotter.figmgr.casabar=self._new_custombar()
109	# just to make sure they're set
110	self._plotter.palette(color=0,colormap=self._colormap,
111	linestyle=0,linestyles=self._linestyles)
112	self._plotter.legend(self._legendloc)
113
114	### TODO: it's probably better to define following two methods in
115	### backend dependent class.
116	def _new_custombar(self):
117	backend=matplotlib.get_backend()
118	if not self._visible:
119	return None
120	elif backend == "TkAgg":
121	from asap.customgui_tkagg import CustomToolbarTkAgg
122	return CustomToolbarTkAgg(self)
123	elif backend == "Qt4Agg":
124	from asap.customgui_qt4agg import CustomToolbarQT4Agg
125	return CustomToolbarQT4Agg(self)
126	return None
127
128	def casabar_exists(self):
129	if not hasattr(self._plotter.figmgr,'casabar'):
130	return False
131	elif self._plotter.figmgr.casabar:
132	return True
133	return False
134	### end of TODO
135
136	def _assert_plotter(self,action="status",errmsg=None):
137	"""
138	Check plot window status. Returns True if plot window is alive.
139	Parameters
140	action: An action to take if the plotter window is not alive.
141	['status'\|'reload'\|'halt']
142	The action 'status' simply returns False if asaplot
143	is not alive. When action='reload', plot window is
144	reloaded and the method returns True. Finally, an
145	error is raised when action='halt'.
146	errmsg: An error (warning) message to send to the logger,
147	when plot window is not alive.
148	"""
149	isAlive = (self._plotter is not None) and self._plotter._alive()
150	# More tests
151	#if isAlive:
152	# if self._plotter.figmgr:
153	# figmgr = self._plotter.figmgr
154	# figid = figmgr.num
155	# # Make sure figid=0 is what asapplotter expects.
156	# # It might be already destroied/overridden by matplotlib
157	# # commands or other plotting methods using asaplot.
158	# isAlive = _pylab_helpers.Gcf.has_fignum(figid) and \
159	# (figmgr == \
160	# _pylab_helpers.Gcf.get_fig_manager(figid))
161	# else:
162	# isAlive = False
163
164	if isAlive:
165	return True
166	# Plotter is not alive.
167	haltmsg = "Plotter window has not yet been loaded or is closed."
168	if type(errmsg)==str and len(errmsg) > 0:
169	haltmsg = errmsg
170
171	if action.upper().startswith("R"):
172	# reload plotter
173	self._reload_plotter()
174	return True
175	elif action.upper().startswith("H"):
176	# halt
177	asaplog.push(haltmsg)
178	asaplog.post("ERROR")
179	raise RuntimeError(haltmsg)
180	else:
181	if errmsg:
182	asaplog.push(errmsg)
183	asaplog.post("WARN")
184	return False
185
186
187	def gca(self):
188	errmsg = "No axis to retun. Need to plot first."
189	if not self._assert_plotter(action="status",errmsg=errmsg):
190	return None
191	return self._plotter.figure.gca()
192
193	def refresh(self):
194	"""Do a soft refresh"""
195	errmsg = "No figure to re-plot. Need to plot first."
196	self._assert_plotter(action="halt",errmsg=errmsg)
197
198	self._plotter.figure.show()
199
200	def save(self, filename=None, orientation=None, dpi=None):
201	"""
202	Save the plot to a file. The known formats are 'png', 'ps', 'eps'.
203	Parameters:
204	filename: The name of the output file. This is optional
205	and autodetects the image format from the file
206	suffix. If non filename is specified a file
207	called 'yyyymmdd_hhmmss.png' is created in the
208	current directory.
209	orientation: optional parameter for postscript only (not eps).
210	'landscape', 'portrait' or None (default) are valid.
211	If None is choosen for 'ps' output, the plot is
212	automatically oriented to fill the page.
213	dpi: The dpi of the output non-ps plot
214	"""
215	errmsg = "Cannot save figure. Need to plot first."
216	self._assert_plotter(action="halt",errmsg=errmsg)
217
218	self._plotter.save(filename,orientation,dpi)
219	return
220
221	def create_mask(self, nwin=1, panel=0, color=None):
222	"""
223	Interactively define a mask. It retruns a mask that is equivalent to
224	the one created manually with scantable.create_mask.
225	Parameters:
226	nwin: The number of mask windows to create interactively
227	default is 1.
228	panel: Which panel to use for mask selection. This is useful
229	if different IFs are spread over panels (default 0)
230	"""
231	## this method relies on already plotted figure
232	if not self._assert_plotter(action="status") or (self._data is None):
233	msg = "Cannot create mask interactively on plot. Can only create mask after plotting."
234	asaplog.push( msg )
235	asaplog.post( "ERROR" )
236	return []
237	outmask = []
238	self._plotter.subplot(panel)
239	xmin, xmax = self._plotter.axes.get_xlim()
240	marg = 0.05*(xmax-xmin)
241	self._plotter.axes.set_xlim(xmin-marg, xmax+marg)
242	self.refresh()
243
244	def cleanup(lines=False, texts=False, refresh=False):
245	if lines:
246	del self._plotter.axes.lines[-1]
247	if texts:
248	del self._plotter.axes.texts[-1]
249	if refresh:
250	self.refresh()
251
252	for w in xrange(nwin):
253	wpos = []
254	self.text(0.05,1.0, "Add start boundary",
255	coords="relative", fontsize=10)
256	point = self._plotter.get_point()
257	cleanup(texts=True)
258	if point is None:
259	continue
260	wpos.append(point[0])
261	self.axvline(wpos[0], color=color)
262	self.text(0.05,1.0, "Add end boundary", coords="relative", fontsize=10)
263	point = self._plotter.get_point()
264	cleanup(texts=True, lines=True)
265	if point is None:
266	self.refresh()
267	continue
268	wpos.append(point[0])
269	self.axvspan(wpos[0], wpos[1], alpha=0.1,
270	edgecolor=color, facecolor=color)
271	ymin, ymax = self._plotter.axes.get_ylim()
272	outmask.append(wpos)
273
274	self._plotter.axes.set_xlim(xmin, xmax)
275	self.refresh()
276	if len(outmask) > 0:
277	return self._data.create_mask(*outmask)
278	return []
279
280
281	### Forwards to methods in matplotlib axes ###
282	def text(self, args, *kwargs):
283	self._assert_plotter(action="reload")
284	if kwargs.has_key("interactive"):
285	if kwargs.pop("interactive"):
286	pos = self._plotter.get_point()
287	args = tuple(pos)+args
288	self._axes_callback("text", args, *kwargs)
289
290	text.__doc__ = matplotlib.axes.Axes.text.__doc__
291
292	def arrow(self, args, *kwargs):
293	self._assert_plotter(action="reload")
294	if kwargs.has_key("interactive"):
295	if kwargs.pop("interactive"):
296	pos = self._plotter.get_region()
297	dpos = (pos[0][0], pos[0][1],
298	pos[1][0]-pos[0][0],
299	pos[1][1] - pos[0][1])
300	args = dpos + args
301	self._axes_callback("arrow", args, *kwargs)
302
303	arrow.__doc__ = matplotlib.axes.Axes.arrow.__doc__
304
305	def annotate(self, text, xy=None, xytext=None, **kwargs):
306	self._assert_plotter(action="reload")
307	if kwargs.has_key("interactive"):
308	if kwargs.pop("interactive"):
309	xy = self._plotter.get_point()
310	xytext = self._plotter.get_point()
311	if not kwargs.has_key("arrowprops"):
312	kwargs["arrowprops"] = dict(arrowstyle="->")
313	self._axes_callback("annotate", text, xy, xytext, **kwargs)
314
315	annotate.__doc__ = matplotlib.axes.Axes.annotate.__doc__
316
317	def axvline(self, args, *kwargs):
318	self._assert_plotter(action="reload")
319	if kwargs.has_key("interactive"):
320	if kwargs.pop("interactive"):
321	pos = self._plotter.get_point()
322	args = (pos[0],)+args
323	self._axes_callback("axvline", args, *kwargs)
324
325	axvline.__doc__ = matplotlib.axes.Axes.axvline.__doc__
326
327	def axhline(self, args, *kwargs):
328	self._assert_plotter(action="reload")
329	if kwargs.has_key("interactive"):
330	if kwargs.pop("interactive"):
331	pos = self._plotter.get_point()
332	args = (pos[1],)+args
333	self._axes_callback("axhline", args, *kwargs)
334
335	axhline.__doc__ = matplotlib.axes.Axes.axhline.__doc__
336
337	def axvspan(self, args, *kwargs):
338	self._assert_plotter(action="reload")
339	if kwargs.has_key("interactive"):
340	if kwargs.pop("interactive"):
341	pos = self._plotter.get_region()
342	dpos = (pos[0][0], pos[1][0])
343	args = dpos + args
344	self._axes_callback("axvspan", args, *kwargs)
345	# hack to preventy mpl from redrawing the patch
346	# it seem to convert the patch into lines on every draw.
347	# This doesn't happen in a test script???
348	#del self._plotter.axes.patches[-1]
349
350	axvspan.__doc__ = matplotlib.axes.Axes.axvspan.__doc__
351
352	def axhspan(self, args, *kwargs):
353	self._assert_plotter(action="reload")
354	if kwargs.has_key("interactive"):
355	if kwargs.pop("interactive"):
356	pos = self._plotter.get_region()
357	dpos = (pos[0][1], pos[1][1])
358	args = dpos + args
359	self._axes_callback("axhspan", args, *kwargs)
360	# hack to preventy mpl from redrawing the patch
361	# it seem to convert the patch into lines on every draw.
362	# This doesn't happen in a test script???
363	#del self._plotter.axes.patches[-1]
364
365	axhspan.__doc__ = matplotlib.axes.Axes.axhspan.__doc__
366
367	def _axes_callback(self, axesfunc, args, *kwargs):
368	self._assert_plotter(action="reload")
369	panel = 0
370	if kwargs.has_key("panel"):
371	panel = kwargs.pop("panel")
372	coords = None
373	if kwargs.has_key("coords"):
374	coords = kwargs.pop("coords")
375	if coords.lower() == 'world':
376	kwargs["transform"] = self._plotter.axes.transData
377	elif coords.lower() == 'relative':
378	kwargs["transform"] = self._plotter.axes.transAxes
379	self._plotter.subplot(panel)
380	self._plotter.axes.set_autoscale_on(False)
381	getattr(self._plotter.axes, axesfunc)(args, *kwargs)
382	self._plotter.show(False)
383	self._plotter.axes.set_autoscale_on(True)
384	# end matplotlib.axes fowarding functions
385
386
387	### Forwards to matplotlib.Figure.text ###
388	def figtext(self, args, *kwargs):
389	"""
390	Add text to figure at location x,y (relative 0-1 coords).
391	This method forwards args and *kwargs to a Matplotlib method,
392	matplotlib.Figure.text.
393	See the method help for detailed information.
394	"""
395	self._assert_plotter(action="reload")
396	self._plotter.text(args, *kwargs)
397	# end matplotlib.Figure.text forwarding function
398
399
400	### Set Plot parameters ###
401	@asaplog_post_dec
402	def set_data(self, scan, refresh=True):
403	"""
404	Set a scantable to plot.
405	Parameters:
406	scan: a scantable
407	refresh: True (default) or False. If True, the plot is
408	replotted based on the new parameter setting(s).
409	Otherwise,the parameter(s) are set without replotting.
410	Note:
411	The user specified masks and data selections will be reset
412	if a new scantable is set. This method should be called before
413	setting data selections (set_selection) and/or masks (set_mask).
414	"""
415	from asap import scantable
416	if isinstance(scan, scantable):
417	if (self._data is not None) and (scan != self._data):
418	del self._data
419	msg = "A new scantable is set to the plotter. "\
420	"The masks, data selections, and labels are reset."
421	asaplog.push(msg)
422	self._data = scan
423	# reset
424	self._reset()
425	else:
426	msg = "Input is not a scantable"
427	raise TypeError(msg)
428
429	# ranges become invalid when unit changes
430	if self._abcunit and self._abcunit != self._data.get_unit():
431	self._minmaxx = None
432	self._minmaxy = None
433	self._abcunit = self._data.get_unit()
434	if refresh: self.plot()
435
436	@asaplog_post_dec
437	def set_mode(self, stacking=None, panelling=None, refresh=True):
438	"""
439	Set the plots look and feel, i.e. what you want to see on the plot.
440	Parameters:
441	stacking: tell the plotter which variable to plot
442	as line colour overlays (default 'pol')
443	panelling: tell the plotter which variable to plot
444	across multiple panels (default 'scan'
445	refresh: True (default) or False. If True, the plot is
446	replotted based on the new parameter setting(s).
447	Otherwise,the parameter(s) are set without replotting.
448	Note:
449	Valid modes are:
450	'beam' 'Beam' 'b': Beams
451	'if' 'IF' 'i': IFs
452	'pol' 'Pol' 'p': Polarisations
453	'scan' 'Scan' 's': Scans
454	'time' 'Time' 't': Times
455	'row' 'Row' 'r': Rows
456	When either 'stacking' or 'panelling' is set to 'row',
457	the other parameter setting is ignored.
458	"""
459	msg = "Invalid mode"
460	if not self.set_panelling(panelling) or \
461	not self.set_stacking(stacking):
462	raise TypeError(msg)
463	#if self._panelling == 'r':
464	# self._stacking = '_r'
465	#if self._stacking == 'r':
466	# self._panelling = '_r'
467	if refresh and self._data: self.plot(self._data)
468	return
469
470	def set_stacking(self, what=None):
471	"""Set the 'stacking' mode i.e. which type of spectra should be
472	overlayed.
473	"""
474	mode = what
475	if mode is None:
476	mode = rcParams['plotter.stacking']
477	md = self._translate(mode)
478	if md:
479	self._stacking = md
480	self._lmap = None
481	# new mode is set. need to reset counters for multi page plotting
482	self._reset_counters()
483	return True
484	return False
485
486	def set_panelling(self, what=None):
487	"""Set the 'panelling' mode i.e. which type of spectra should be
488	spread across different panels.
489	"""
490
491	mode = what
492	if mode is None:
493	mode = rcParams['plotter.panelling']
494	md = self._translate(mode)
495	if md:
496	self._panelling = md
497	self._title = None
498	# new mode is set. need to reset counters for multi page plotting
499	self._reset_counters()
500	return True
501	return False
502
503	def set_layout(self,rows=None,cols=None,refresh=True):
504	"""
505	Set the multi-panel layout, i.e. how many rows and columns plots
506	are visible.
507	Parameters:
508	rows: The number of rows of plots
509	cols: The number of columns of plots
510	refresh: True (default) or False. If True, the plot is
511	replotted based on the new parameter setting(s).
512	Otherwise,the parameter(s) are set without replotting.
513	Note:
514	If no argument is given, the potter reverts to its auto-plot
515	behaviour.
516	"""
517	self._rows = rows
518	self._cols = cols
519	if refresh and self._data: self.plot(self._data)
520	return
521
522	def set_range(self,xstart=None,xend=None,ystart=None,yend=None,refresh=True, offset=None):
523	"""
524	Set the range of interest on the abcissa of the plot
525	Parameters:
526	[x,y]start,[x,y]end: The start and end points of the 'zoom' window
527	refresh: True (default) or False. If True, the plot is
528	replotted based on the new parameter setting(s).
529	Otherwise,the parameter(s) are set without replotting.
530	offset: shift the abcissa by the given amount. The abcissa label will
531	have '(relative)' appended to it.
532	Note:
533	These become non-sensical when the unit changes.
534	use plotter.set_range() without parameters to reset
535
536	"""
537	self._offset = offset
538	if xstart is None and xend is None:
539	self._minmaxx = None
540	else:
541	self._minmaxx = [xstart,xend]
542	if ystart is None and yend is None:
543	self._minmaxy = None
544	else:
545	self._minmaxy = [ystart,yend]
546	if refresh and self._data: self.plot(self._data)
547	return
548
549	def set_legend(self, mp=None, fontsize = None, mode = 0, refresh=True):
550	"""
551	Specify a mapping for the legend instead of using the default
552	indices:
553	Parameters:
554	mp: a list of 'strings'. This should have the same length
555	as the number of elements on the legend and then maps
556	to the indeces in order. It is possible to uses latex
557	math expression. These have to be enclosed in r'',
558	e.g. r'$x^{2}$'
559	fontsize: The font size of the label (default None)
560	mode: where to display the legend
561	Any other value for loc else disables the legend:
562	0: auto
563	1: upper right
564	2: upper left
565	3: lower left
566	4: lower right
567	5: right
568	6: center left
569	7: center right
570	8: lower center
571	9: upper center
572	10: center
573	refresh: True (default) or False. If True, the plot is
574	replotted based on the new parameter setting(s).
575	Otherwise,the parameter(s) are set without replotting.
576
577	Example:
578	If the data has two IFs/rest frequencies with index 0 and 1
579	for CO and SiO:
580	plotter.set_stacking('i')
581	plotter.set_legend(['CO','SiO'])
582	plotter.plot()
583	plotter.set_legend([r'$^{12}CO$', r'SiO'])
584	"""
585	self._lmap = mp
586	#self._plotter.legend(mode)
587	self._legendloc = mode
588	if isinstance(fontsize, int):
589	from matplotlib import rc as rcp
590	rcp('legend', fontsize=fontsize)
591	if refresh and self._data: self.plot(self._data)
592	return
593
594	def set_title(self, title=None, fontsize=None, refresh=True):
595	"""
596	Set the title of sub-plots. If multiple sub-plots are plotted,
597	multiple titles have to be specified.
598	Parameters:
599	title: a list of titles of sub-plots.
600	fontsize: a font size of titles (integer)
601	refresh: True (default) or False. If True, the plot is
602	replotted based on the new parameter setting(s).
603	Otherwise,the parameter(s) are set without replotting.
604	Example:
605	# two panels are visible on the plotter
606	plotter.set_title(['First Panel','Second Panel'])
607	"""
608	self._title = title
609	if isinstance(fontsize, int):
610	from matplotlib import rc as rcp
611	rcp('axes', titlesize=fontsize)
612	if refresh and self._data: self.plot(self._data)
613	return
614
615	def set_ordinate(self, ordinate=None, fontsize=None, refresh=True):
616	"""
617	Set the y-axis label of the plot. If multiple panels are plotted,
618	multiple labels have to be specified.
619	Parameters:
620	ordinate: a list of ordinate labels. None (default) let
621	data determine the labels
622	fontsize: a font size of vertical axis labels (integer)
623	refresh: True (default) or False. If True, the plot is
624	replotted based on the new parameter setting(s).
625	Otherwise,the parameter(s) are set without replotting.
626	Example:
627	# two panels are visible on the plotter
628	plotter.set_ordinate(['First Y-Axis','Second Y-Axis'])
629	"""
630	self._ordinate = ordinate
631	if isinstance(fontsize, int):
632	from matplotlib import rc as rcp
633	rcp('axes', labelsize=fontsize)
634	rcp('ytick', labelsize=fontsize)
635	if refresh and self._data: self.plot(self._data)
636	return
637
638	def set_abcissa(self, abcissa=None, fontsize=None, refresh=True):
639	"""
640	Set the x-axis label of the plot. If multiple panels are plotted,
641	multiple labels have to be specified.
642	Parameters:
643	abcissa: a list of abcissa labels. None (default) let
644	data determine the labels
645	fontsize: a font size of horizontal axis labels (integer)
646	refresh: True (default) or False. If True, the plot is
647	replotted based on the new parameter setting(s).
648	Otherwise,the parameter(s) are set without replotting.
649	Example:
650	# two panels are visible on the plotter
651	plotter.set_ordinate(['First X-Axis','Second X-Axis'])
652	"""
653	self._abcissa = abcissa
654	if isinstance(fontsize, int):
655	from matplotlib import rc as rcp
656	rcp('axes', labelsize=fontsize)
657	rcp('xtick', labelsize=fontsize)
658	if refresh and self._data: self.plot(self._data)
659	return
660
661	def set_histogram(self, hist=True, linewidth=None, refresh=True):
662	"""
663	Enable/Disable histogram-like plotting.
664	Parameters:
665	hist: True (default) or False. The fisrt default
666	is taken from the .asaprc setting
667	plotter.histogram
668	linewidth: a line width
669	refresh: True (default) or False. If True, the plot is
670	replotted based on the new parameter setting(s).
671	Otherwise,the parameter(s) are set without replotting.
672	"""
673	self._hist = hist
674	if isinstance(linewidth, float) or isinstance(linewidth, int):
675	from matplotlib import rc as rcp
676	rcp('lines', linewidth=linewidth)
677	if refresh and self._data: self.plot(self._data)
678
679	def set_colors(self, colmap, refresh=True):
680	"""
681	Set the colours to be used. The plotter will cycle through
682	these colours when lines are overlaid (stacking mode).
683	Parameters:
684	colmap: a list of colour names
685	refresh: True (default) or False. If True, the plot is
686	replotted based on the new parameter setting(s).
687	Otherwise,the parameter(s) are set without replotting.
688	Example:
689	plotter.set_colors('red green blue')
690	# If for example four lines are overlaid e.g I Q U V
691	# 'I' will be 'red', 'Q' will be 'green', U will be 'blue'
692	# and 'V' will be 'red' again.
693	"""
694	#if isinstance(colmap,str):
695	# colmap = colmap.split()
696	#self._plotter.palette(0, colormap=colmap)
697	self._colormap = colmap
698	if refresh and self._data: self.plot(self._data)
699
700	# alias for english speakers
701	set_colours = set_colors
702
703	def set_linestyles(self, linestyles=None, linewidth=None, refresh=True):
704	"""
705	Set the linestyles to be used. The plotter will cycle through
706	these linestyles when lines are overlaid (stacking mode) AND
707	only one color has been set.
708	Parameters:
709	linestyles: a list of linestyles to use.
710	'line', 'dashed', 'dotted', 'dashdot',
711	'dashdotdot' and 'dashdashdot' are
712	possible
713	linewidth: a line width
714	refresh: True (default) or False. If True, the plot is
715	replotted based on the new parameter setting(s).
716	Otherwise,the parameter(s) are set without replotting.
717	Example:
718	plotter.set_colors('black')
719	plotter.set_linestyles('line dashed dotted dashdot')
720	# If for example four lines are overlaid e.g I Q U V
721	# 'I' will be 'solid', 'Q' will be 'dashed',
722	# U will be 'dotted' and 'V' will be 'dashdot'.
723	"""
724	#if isinstance(linestyles,str):
725	# linestyles = linestyles.split()
726	#self._plotter.palette(color=0,linestyle=0,linestyles=linestyles)
727	self._linestyles = linestyles
728	if isinstance(linewidth, float) or isinstance(linewidth, int):
729	from matplotlib import rc as rcp
730	rcp('lines', linewidth=linewidth)
731	if refresh and self._data: self.plot(self._data)
732
733	def set_font(self, refresh=True,**kwargs):
734	"""
735	Set font properties.
736	Parameters:
737	family: one of 'sans-serif', 'serif', 'cursive', 'fantasy', 'monospace'
738	style: one of 'normal' (or 'roman'), 'italic' or 'oblique'
739	weight: one of 'normal or 'bold'
740	size: the 'general' font size, individual elements can be adjusted
741	seperately
742	refresh: True (default) or False. If True, the plot is
743	replotted based on the new parameter setting(s).
744	Otherwise,the parameter(s) are set without replotting.
745	"""
746	from matplotlib import rc as rcp
747	fdict = {}
748	for k,v in kwargs.iteritems():
749	if v:
750	fdict[k] = v
751	self._fp = FontProperties(**fdict)
752	if refresh and self._data: self.plot(self._data)
753
754	def set_margin(self,margin=[],refresh=True):
755	"""
756	Set margins between subplots and plot edges.
757	Parameters:
758	margin: a list of margins in figure coordinate (0-1),
759	i.e., fraction of the figure width or height.
760	The order of elements should be:
761	[left, bottom, right, top, horizontal space btw panels,
762	vertical space btw panels].
763	refresh: True (default) or False. If True, the plot is
764	replotted based on the new parameter setting(s).
765	Otherwise,the parameter(s) are set without replotting.
766	Note
767	* When margin is not specified, the values are reset to the defaults
768	of matplotlib.
769	* If any element is set to be None, the current value is adopted.
770	"""
771	if margin == []: self._margins=self._reset_margin()
772	else:
773	self._margins=[None]*6
774	self._margins[0:len(margin)]=margin
775	#print "panel margin set to ",self._margins
776	if refresh and self._data: self.plot(self._data)
777
778	def _reset_margin(self):
779	ks=map(lambda x: 'figure.subplot.'+x,
780	['left','bottom','right','top','hspace','wspace'])
781	return map(matplotlib.rcParams.get,ks)
782
783	def plot_lines(self, linecat=None, doppler=0.0, deltachan=10, rotate=90.0,
784	location=None):
785	"""
786	Plot a line catalog.
787	Parameters:
788	linecat: the linecatalog to plot
789	doppler: the velocity shift to apply to the frequencies
790	deltachan: the number of channels to include each side of the
791	line to determine a local maximum/minimum
792	rotate: the rotation (in degrees) for the text label (default 90.0)
793	location: the location of the line annotation from the 'top',
794	'bottom' or alternate (None - the default)
795	Notes:
796	If the spectrum is flagged no line will be drawn in that location.
797	"""
798	errmsg = "Cannot plot spectral lines. Need to plot scantable first."
799	self._assert_plotter(action="halt",errmsg=errmsg)
800	if not self._data:
801	raise RuntimeError("No scantable has been plotted yet.")
802	from asap._asap import linecatalog
803	if not isinstance(linecat, linecatalog):
804	raise ValueError("'linecat' isn't of type linecatalog.")
805	if not self._data.get_unit().endswith("Hz"):
806	raise RuntimeError("Can only overlay linecatalogs when data is in frequency.")
807	from numpy import ma
808	for j in range(len(self._plotter.subplots)):
809	self._plotter.subplot(j)
810	lims = self._plotter.axes.get_xlim()
811	for row in range(linecat.nrow()):
812	# get_frequency returns MHz
813	base = { "GHz": 1000.0, "MHz": 1.0, "Hz": 1.0e-6 }
814	restf = linecat.get_frequency(row)/base[self._data.get_unit()]
815	c = 299792.458
816	freq = restf*(1.0-doppler/c)
817	if lims[0] < freq < lims[1]:
818	if location is None:
819	loc = 'bottom'
820	if row%2: loc='top'
821	else: loc = location
822	maxys = []
823	for line in self._plotter.axes.lines:
824	v = line._x
825	asc = v[0] < v[-1]
826
827	idx = None
828	if not asc:
829	if v[len(v)-1] <= freq <= v[0]:
830	i = len(v)-1
831	while i>=0 and v[i] < freq:
832	idx = i
833	i-=1
834	else:
835	if v[0] <= freq <= v[len(v)-1]:
836	i = 0
837	while i<len(v) and v[i] < freq:
838	idx = i
839	i+=1
840	if idx is not None:
841	lower = idx - deltachan
842	upper = idx + deltachan
843	if lower < 0: lower = 0
844	if upper > len(v): upper = len(v)
845	s = slice(lower, upper)
846	y = line._y[s]
847	maxy = ma.maximum(y)
848	if isinstance( maxy, float):
849	maxys.append(maxy)
850	if len(maxys):
851	peak = max(maxys)
852	if peak > self._plotter.axes.get_ylim()[1]:
853	loc = 'bottom'
854	else:
855	continue
856	self._plotter.vline_with_label(freq, peak,
857	linecat.get_name(row),
858	location=loc, rotate=rotate)
859	self._plotter.show(hardrefresh=False)
860
861
862	def set_selection(self, selection=None, refresh=True, **kw):
863	"""
864	Parameters:
865	selection: a selector object (default unset the selection)
866	refresh: True (default) or False. If True, the plot is
867	replotted based on the new parameter setting(s).
868	Otherwise,the parameter(s) are set without replotting.
869	"""
870	if selection is None:
871	# reset
872	if len(kw) == 0:
873	self._selection = selector()
874	else:
875	# try keywords
876	for k in kw:
877	if k not in selector.fields:
878	raise KeyError("Invalid selection key '%s', valid keys are %s" % (k, selector.fields))
879	self._selection = selector(**kw)
880	elif isinstance(selection, selector):
881	self._selection = selection
882	else:
883	raise TypeError("'selection' is not of type selector")
884
885	order = self._get_sortstring([self._panelling,self._stacking])
886	if order:
887	self._selection.set_order(order)
888	if refresh and self._data:
889	self.plot()
890
891	@asaplog_post_dec
892	def set_mask(self, mask=None, selection=None, refresh=True):
893	"""
894	Set a plotting mask for a specific polarization.
895	This is useful for masking out 'noise' Pangle outside a source.
896	Parameters:
897	mask: a mask from scantable.create_mask
898	selection: the spectra to apply the mask to.
899	refresh: True (default) or False. If True, the plot is
900	replotted based on the new parameter setting(s).
901	Otherwise,the parameter(s) are set without replotting.
902	Example:
903	select = selector()
904	select.setpolstrings('Pangle')
905	plotter.set_mask(mymask, select)
906	"""
907	if not self._data:
908	msg = "Can only set mask after a first call to plot()"
909	raise RuntimeError(msg)
910	if (mask is not None) and len(mask):
911	if isinstance(mask, list) or isinstance(mask, tuple):
912	self._usermask = array(mask)
913	else:
914	self._usermask = mask
915	if mask is None and selection is None:
916	self._usermask = []
917	self._maskselection = None
918	if isinstance(selection, selector):
919	self._maskselection = {'b': selection.get_beams(),
920	's': selection.get_scans(),
921	'i': selection.get_ifs(),
922	'p': selection.get_pols(),
923	't': [] }
924	else:
925	self._maskselection = None
926	if refresh: self.plot(self._data)
927
928
929	### Reset methods ###
930	def _reset(self):
931	"""Reset method called when new data is set"""
932	# reset selections and masks
933	self.set_selection(None, False)
934	self.set_mask(None, None, False)
935	# reset offset
936	self._offset = None
937	# reset header
938	self._reset_header()
939	# reset labels
940	self._lmap = None # related to stack
941	self.set_title(None, None, False)
942	self.set_ordinate(None, None, False)
943	self.set_abcissa(None, None, False)
944
945	def _reset_header(self):
946	self._headtext={'string': None, 'textobj': None}
947
948	def _reset_counter(self):
949	self._startrow = 0
950	self._ipanel = -1
951	self._reset_header()
952	self._panelrows = []
953	if self.casabar_exists():
954	self._plotter.figmgr.casabar.set_pagecounter(1)
955
956	def _reset_counters(self):
957	self._startrow = 0
958	self._ipanel = -1
959	self._panelrows = []
960
961
962	### Actual scantable plot methods ###
963	@asaplog_post_dec
964	def plot(self, scan=None):
965	"""
966	Plot a scantable.
967	Parameters:
968	scan: a scantable
969	Note:
970	If a scantable was specified in a previous call
971	to plot, no argument has to be given to 'replot'
972	NO checking is done that the abcissas of the scantable
973	are consistent e.g. all 'channel' or all 'velocity' etc.
974	"""
975	self._plotmode = "spectra"
976	if not self._data and not scan:
977	msg = "Input is not a scantable"
978	raise TypeError(msg)
979
980	self._assert_plotter(action="reload")
981	self._plotter.hold()
982	self._reset_counter()
983	#self._plotter.clear()
984	if scan:
985	self.set_data(scan, refresh=False)
986	self._plotter.palette(color=0,colormap=self._colormap,
987	linestyle=0,linestyles=self._linestyles)
988	self._plotter.legend(self._legendloc)
989	self._plot(self._data)
990	if self._minmaxy is not None:
991	self._plotter.set_limits(ylim=self._minmaxy)
992	if self.casabar_exists(): self._plotter.figmgr.casabar.enable_button()
993	self._plotter.release()
994	self._plotter.tidy()
995	self._plotter.show(hardrefresh=False)
996	return
997
998	def _plot(self, scan):
999	savesel = scan.get_selection()
1000	sel = savesel + self._selection
1001	order = self._get_sortstring([self._panelling,self._stacking])
1002	if order:
1003	sel.set_order(order)
1004	scan.set_selection(sel)
1005	d = {'b': scan.getbeam, 's': scan.getscan,
1006	'i': scan.getif, 'p': scan.getpol, 't': scan.get_time,
1007	'r': int}#, '_r': int}
1008
1009	polmodes = dict(zip(sel.get_pols(), sel.get_poltypes()))
1010	# this returns either a tuple of numbers or a length (ncycles)
1011	# convert this into lengths
1012	n0,nstack0 = self._get_selected_n(scan)
1013	if isinstance(n0, int): n = n0
1014	else: n = len(n0)
1015	if isinstance(nstack0, int): nstack = nstack0
1016	else: nstack = len(nstack0)
1017	# In case of row stacking
1018	rowstack = False
1019	titlemode = self._panelling
1020	if self._stacking == "r" and self._panelling != "r":
1021	rowstack = True
1022	titlemode = '_r'
1023	nptot = n
1024	maxpanel, maxstack = 16,16
1025	if nstack > maxstack:
1026	msg ="Scan to be overlayed contains more than %d selections.\n" \
1027	"Selecting first %d selections..." % (maxstack, maxstack)
1028	asaplog.push(msg)
1029	asaplog.post('WARN')
1030	nstack = min(nstack,maxstack)
1031	#n = min(n-self._ipanel-1,maxpanel)
1032	n = n-self._ipanel-1
1033	# the number of panels in this page
1034	if self._rows and self._cols:
1035	n = min(n,self._rows*self._cols)
1036	else:
1037	n = min(n,maxpanel)
1038
1039	firstpage = (self._ipanel < 0)
1040	#ganged = False
1041	ganged = rcParams['plotter.ganged']
1042	if self._panelling == 'i':
1043	ganged = False
1044	if not firstpage:
1045	# not the first page just clear the axis
1046	nx = self._plotter.cols
1047	ipaxx = n - nx - 1 #the max panel id to supress x-label
1048	for ip in xrange(len(self._plotter.subplots)):
1049	self._plotter.subplot(ip)
1050	self._plotter.clear()
1051	self._plotter.axes.set_visible((ip<n))
1052	if ganged:
1053	self._plotter.axes.xaxis.label.set_visible((ip > ipaxx))
1054	if ip <= ipaxx:
1055	map(lambda x: x.set_visible(False), \
1056	self._plotter.axes.get_xticklabels())
1057	self._plotter.axes.yaxis.label.set_visible((ip % nx)==0)
1058	if ip % nx:
1059	map(lambda y: y.set_visible(False), \
1060	self._plotter.axes.get_yticklabels())
1061	elif (n > 1 and self._rows and self._cols):
1062	self._plotter.set_panels(rows=self._rows,cols=self._cols,
1063	nplots=n,margin=self._margins,
1064	ganged=ganged)
1065	else:
1066	self._plotter.set_panels(rows=n,cols=0,nplots=n,
1067	margin=self._margins,ganged=ganged)
1068	#r = 0
1069	r = self._startrow
1070	nr = scan.nrow()
1071	a0,b0 = -1,-1
1072	allxlim = []
1073	allylim = []
1074	#newpanel=True
1075	newpanel=False
1076	panelcount,stackcount = 0,0
1077	# If this is not the first page
1078	if r > 0:
1079	# panelling value of the prev page
1080	a0 = d[self._panelling](r-1)
1081	# set the initial stackcount large not to plot
1082	# the start row automatically
1083	stackcount = nstack
1084
1085	while r < nr:
1086	a = d[self._panelling](r)
1087	b = d[self._stacking](r)
1088	if a > a0 and panelcount < n:
1089	if n > 1:
1090	self._plotter.subplot(panelcount)
1091	self._plotter.palette(0)
1092	#title
1093	xlab = self._abcissa and self._abcissa[panelcount] \
1094	or scan._getabcissalabel()
1095	if self._offset and not self._abcissa:
1096	xlab += " (relative)"
1097	ylab = self._ordinate and self._ordinate[panelcount] \
1098	or scan._get_ordinate_label()
1099	self._plotter.set_axes('xlabel', xlab)
1100	self._plotter.set_axes('ylabel', ylab)
1101	#lbl = self._get_label(scan, r, self._panelling, self._title)
1102	lbl = self._get_label(scan, r, titlemode, self._title)
1103	if isinstance(lbl, list) or isinstance(lbl, tuple):
1104	if 0 <= panelcount < len(lbl):
1105	lbl = lbl[panelcount]
1106	else:
1107	# get default label
1108	#lbl = self._get_label(scan, r, self._panelling, None)
1109	lbl = self._get_label(scan, r, titlemode, None)
1110	self._plotter.set_axes('title',lbl)
1111	newpanel = True
1112	stackcount = 0
1113	panelcount += 1
1114	# save the start row to plot this panel for future revisit.
1115	if self._panelling != 'r' and \
1116	len(self._panelrows) < self._ipanel+1+panelcount:
1117	self._panelrows += [r]
1118
1119	#if (b > b0 or newpanel) and stackcount < nstack:
1120	if stackcount < nstack and (newpanel or \
1121	rowstack or (a == a0 and b > b0)):
1122	y = []
1123	if len(polmodes):
1124	y = scan._getspectrum(r, polmodes[scan.getpol(r)])
1125	else:
1126	y = scan._getspectrum(r)
1127	# flag application
1128	mr = scan._getflagrow(r)
1129	from numpy import ma, array
1130	if mr:
1131	y = ma.masked_array(y,mask=mr)
1132	else:
1133	m = scan._getmask(r)
1134	from numpy import logical_not, logical_and
1135	if self._maskselection and len(self._usermask) == len(m):
1136	if d[self._stacking](r) in self._maskselection[self._stacking]:
1137	m = logical_and(m, self._usermask)
1138	y = ma.masked_array(y,mask=logical_not(array(m,copy=False)))
1139
1140	x = array(scan._getabcissa(r))
1141	if self._offset:
1142	x += self._offset
1143	if self._minmaxx is not None:
1144	s,e = self._slice_indeces(x)
1145	x = x[s:e]
1146	y = y[s:e]
1147	if len(x) > 1024 and rcParams['plotter.decimate']:
1148	fac = len(x)/1024
1149	x = x[::fac]
1150	y = y[::fac]
1151	llbl = self._get_label(scan, r, self._stacking, self._lmap)
1152	if isinstance(llbl, list) or isinstance(llbl, tuple):
1153	if 0 <= stackcount < len(llbl):
1154	# use user label
1155	llbl = llbl[stackcount]
1156	else:
1157	# get default label
1158	llbl = self._get_label(scan, r, self._stacking, None)
1159	self._plotter.set_line(label=llbl)
1160	plotit = self._plotter.plot
1161	if self._hist: plotit = self._plotter.hist
1162	if len(x) > 0 and not mr:
1163	plotit(x,y)
1164	xlim= self._minmaxx or [min(x),max(x)]
1165	allxlim += xlim
1166	ylim= self._minmaxy or [ma.minimum(y),ma.maximum(y)]
1167	allylim += ylim
1168	else:
1169	xlim = self._minmaxx or []
1170	allxlim += xlim
1171	ylim= self._minmaxy or []
1172	allylim += ylim
1173	stackcount += 1
1174	a0=a
1175	b0=b
1176	# last in colour stack -> autoscale x
1177	if stackcount == nstack and len(allxlim) > 0:
1178	allxlim.sort()
1179	self._plotter.subplots[panelcount-1]['axes'].set_xlim([allxlim[0],allxlim[-1]])
1180	if ganged:
1181	allxlim = [allxlim[0],allxlim[-1]]
1182	else:
1183	# clear
1184	allxlim =[]
1185
1186	newpanel = False
1187	#a0=a
1188	#b0=b
1189	# ignore following rows
1190	if (panelcount == n and stackcount == nstack) or (r == nr-1):
1191	# last panel -> autoscale y if ganged
1192	#if rcParams['plotter.ganged'] and len(allylim) > 0:
1193	if ganged and len(allylim) > 0:
1194	allylim.sort()
1195	self._plotter.set_limits(ylim=[allylim[0],allylim[-1]])
1196	break
1197	r+=1 # next row
1198
1199	# save the current counter for multi-page plotting
1200	self._startrow = r+1
1201	self._ipanel += panelcount
1202	if self.casabar_exists():
1203	if self._ipanel >= nptot-1:
1204	self._plotter.figmgr.casabar.disable_next()
1205	else:
1206	self._plotter.figmgr.casabar.enable_next()
1207	if self._ipanel + 1 - panelcount > 0:
1208	self._plotter.figmgr.casabar.enable_prev()
1209	else:
1210	self._plotter.figmgr.casabar.disable_prev()
1211
1212	#reset the selector to the scantable's original
1213	scan.set_selection(savesel)
1214
1215	#temporary switch-off for older matplotlib
1216	#if self._fp is not None:
1217	if self._fp is not None and \
1218	getattr(self._plotter.figure,'findobj',False):
1219	for o in self._plotter.figure.findobj(Text):
1220	if not self._headtext['textobj'] or \
1221	not (o in self._headtext['textobj']):
1222	o.set_fontproperties(self._fp)
1223
1224	def _get_sortstring(self, lorders):
1225	d0 = {'s': 'SCANNO', 'b': 'BEAMNO', 'i':'IFNO',
1226	'p': 'POLNO', 'c': 'CYCLENO', 't' : 'TIME', 'r':None, '_r':None }
1227	if not (type(lorders) == list) and not (type(lorders) == tuple):
1228	return None
1229	if len(lorders) > 0:
1230	lsorts = []
1231	for order in lorders:
1232	if order == "r":
1233	# don't sort if row panelling/stacking
1234	return None
1235	ssort = d0[order]
1236	if ssort:
1237	lsorts.append(ssort)
1238	return lsorts
1239	return None
1240
1241	def _get_selected_n(self, scan):
1242	d1 = {'b': scan.getbeamnos, 's': scan.getscannos,
1243	'i': scan.getifnos, 'p': scan.getpolnos, 't': scan.ncycle,
1244	'r': scan.nrow}#, '_r': False}
1245	d2 = { 'b': self._selection.get_beams(),
1246	's': self._selection.get_scans(),
1247	'i': self._selection.get_ifs(),
1248	'p': self._selection.get_pols(),
1249	't': self._selection.get_cycles(),
1250	'r': False}#, '_r': 1}
1251	n = d2[self._panelling] or d1[self._panelling]()
1252	nstack = d2[self._stacking] or d1[self._stacking]()
1253	# handle row panelling/stacking
1254	if self._panelling == 'r':
1255	nstack = 1
1256	elif self._stacking == 'r':
1257	n = 1
1258	return n,nstack
1259
1260	def _get_label(self, scan, row, mode, userlabel=None):
1261	if isinstance(userlabel, list) and len(userlabel) == 0:
1262	userlabel = " "
1263	pms = dict(zip(self._selection.get_pols(),self._selection.get_poltypes()))
1264	if len(pms):
1265	poleval = scan._getpollabel(scan.getpol(row),pms[scan.getpol(row)])
1266	else:
1267	poleval = scan._getpollabel(scan.getpol(row),scan.poltype())
1268	d = {'b': "Beam "+str(scan.getbeam(row)),
1269	#'s': scan._getsourcename(row),
1270	's': "Scan "+str(scan.getscan(row))+\
1271	" ("+str(scan._getsourcename(row))+")",
1272	'i': "IF"+str(scan.getif(row)),
1273	'p': poleval,
1274	't': str(scan.get_time(row)),
1275	'r': "row "+str(row),
1276	#'_r': str(scan.get_time(row))+",\nIF"+str(scan.getif(row))+", "+poleval+", Beam"+str(scan.getbeam(row)) }
1277	'_r': "" }
1278	return userlabel or d[mode]
1279
1280	def _slice_indeces(self, data):
1281	mn = self._minmaxx[0]
1282	mx = self._minmaxx[1]
1283	asc = data[0] < data[-1]
1284	start=0
1285	end = len(data)-1
1286	inc = 1
1287	if not asc:
1288	start = len(data)-1
1289	end = 0
1290	inc = -1
1291	# find min index
1292	#while start > 0 and data[start] < mn:
1293	# start+= inc
1294	minind=start
1295	for ind in xrange(start,end+inc,inc):
1296	if data[ind] > mn: break
1297	minind=ind
1298	# find max index
1299	#while end > 0 and data[end] > mx:
1300	# end-=inc
1301	#if end > 0: end +=1
1302	maxind=end
1303	for ind in xrange(end,start-inc,-inc):
1304	if data[ind] < mx: break
1305	maxind=ind
1306	start=minind
1307	end=maxind
1308	if start > end:
1309	return end,start+1
1310	elif start < end:
1311	return start,end+1
1312	else:
1313	return start,end
1314
1315	def plotazel(self, scan=None, outfile=None):
1316	"""
1317	plot azimuth and elevation versus time of a scantable
1318	"""
1319	self._plotmode = "azel"
1320	visible = rcParams['plotter.gui']
1321	from matplotlib import pylab as PL
1322	from matplotlib.dates import DateFormatter
1323	from pytz import timezone
1324	from matplotlib.dates import HourLocator, MinuteLocator,SecondLocator, DayLocator
1325	from matplotlib.ticker import MultipleLocator
1326	from numpy import array, pi
1327	if self._plotter and (PL.gcf() == self._plotter.figure):
1328	# the current figure is ASAP plotter. Use mpl plotter
1329	figids = PL.get_fignums()
1330	PL.figure(max(figids[-1],1))
1331
1332	if not visible or not self._visible:
1333	PL.ioff()
1334	from matplotlib.backends.backend_agg import FigureCanvasAgg
1335	PL.gcf().canvas.switch_backends(FigureCanvasAgg)
1336	self._data = scan
1337	dates = self._data.get_time(asdatetime=True)
1338	t = PL.date2num(dates)
1339	tz = timezone('UTC')
1340	PL.cla()
1341	PL.ioff()
1342	PL.clf()
1343	# Adjust subplot margins
1344	if not self._margins or len(self._margins) != 6:
1345	self.set_margin(refresh=False)
1346	lef, bot, rig, top, wsp, hsp = self._margins
1347	PL.gcf().subplots_adjust(left=lef,bottom=bot,right=rig,top=top,
1348	wspace=wsp,hspace=hsp)
1349
1350	tdel = max(t) - min(t)
1351	ax = PL.subplot(2,1,1)
1352	el = array(self._data.get_elevation())*180./pi
1353	PL.ylabel('El [deg.]')
1354	dstr = dates[0].strftime('%Y/%m/%d')
1355	if tdel > 1.0:
1356	dstr2 = dates[len(dates)-1].strftime('%Y/%m/%d')
1357	dstr = dstr + " - " + dstr2
1358	majloc = DayLocator()
1359	minloc = HourLocator(range(0,23,12))
1360	timefmt = DateFormatter("%b%d")
1361	elif tdel > 24./60.:
1362	timefmt = DateFormatter('%H:%M')
1363	majloc = HourLocator()
1364	minloc = MinuteLocator(30)
1365	else:
1366	timefmt = DateFormatter('%H:%M')
1367	majloc = MinuteLocator(interval=5)
1368	minloc = SecondLocator(30)
1369
1370	PL.title(dstr)
1371	if tdel == 0.0:
1372	th = (t - PL.floor(t))*24.0
1373	PL.plot(th,el,'o',markersize=2, markerfacecolor='b', markeredgecolor='b')
1374	else:
1375	PL.plot_date(t,el,'o', markersize=2, markerfacecolor='b', markeredgecolor='b',tz=tz)
1376	#ax.grid(True)
1377	ax.xaxis.set_major_formatter(timefmt)
1378	ax.xaxis.set_major_locator(majloc)
1379	ax.xaxis.set_minor_locator(minloc)
1380	ax.yaxis.grid(True)
1381	yloc = MultipleLocator(30)
1382	ax.set_ylim(0,90)
1383	ax.yaxis.set_major_locator(yloc)
1384	if tdel > 1.0:
1385	labels = ax.get_xticklabels()
1386	# PL.setp(labels, fontsize=10, rotation=45)
1387	PL.setp(labels, fontsize=10)
1388
1389	# Az plot
1390	az = array(self._data.get_azimuth())*180./pi
1391	if min(az) < 0:
1392	for irow in range(len(az)):
1393	if az[irow] < 0: az[irow] += 360.0
1394
1395	ax2 = PL.subplot(2,1,2)
1396	#PL.xlabel('Time (UT [hour])')
1397	PL.ylabel('Az [deg.]')
1398	if tdel == 0.0:
1399	PL.plot(th,az,'o',markersize=2, markeredgecolor='b',markerfacecolor='b')
1400	else:
1401	PL.plot_date(t,az,'o', markersize=2,markeredgecolor='b',markerfacecolor='b',tz=tz)
1402	ax2.xaxis.set_major_formatter(timefmt)
1403	ax2.xaxis.set_major_locator(majloc)
1404	ax2.xaxis.set_minor_locator(minloc)
1405	#ax2.grid(True)
1406	ax2.set_ylim(0,360)
1407	ax2.yaxis.grid(True)
1408	#hfmt = DateFormatter('%H')
1409	#hloc = HourLocator()
1410	yloc = MultipleLocator(60)
1411	ax2.yaxis.set_major_locator(yloc)
1412	if tdel > 1.0:
1413	labels = ax2.get_xticklabels()
1414	PL.setp(labels, fontsize=10)
1415	PL.xlabel('Time (UT [day])')
1416	else:
1417	PL.xlabel('Time (UT [hour])')
1418
1419	PL.ion()
1420	PL.draw()
1421	if matplotlib.get_backend() == 'Qt4Agg': PL.gcf().show()
1422	if (outfile is not None):
1423	PL.savefig(outfile)
1424
1425
1426	def plotpointing2(self, scan=None, colorby='', showline=False, projection=''):
1427	"""
1428	plot telescope pointings
1429	Parameters:
1430	infile : input filename or scantable instance
1431	colorby : change color by either
1432	'type'(source type)\|'scan'\|'if'\|'pol'\|'beam'
1433	showline : show dotted line
1434	projection : projection type either
1435	''(no projection [deg])\|'coord'(not implemented)
1436	"""
1437	self._plotmode = "pointing"
1438	from numpy import array, pi
1439	from asap import scantable
1440	# check for scantable
1441	if isinstance(scan, scantable):
1442	if self._data is not None:
1443	if scan != self._data:
1444	self._data = scan
1445	# reset
1446	self._reset()
1447	else:
1448	self._data = scan
1449	self._reset()
1450	if not self._data:
1451	msg = "Input is not a scantable"
1452	raise TypeError(msg)
1453	# check for color mode
1454	validtypes=['type','scan','if','pol', 'beam']
1455	stype = None
1456	if (colorby in validtypes):
1457	stype = colorby[0]
1458	elif len(colorby) > 0:
1459	msg = "Invalid choice of 'colorby' (choices: %s)" % str(validtypes)
1460	raise ValueError(msg)
1461	self._assert_plotter(action="reload")
1462	self._plotter.hold()
1463	self._reset_counter()
1464	if self.casabar_exists():
1465	self._plotter.figmgr.casabar.disable_button()
1466	# for now, only one plot
1467	self._plotter.set_panels(rows=1,cols=1)
1468	# first panel
1469	self._plotter.subplot(0)
1470	# first color and linestyles
1471	self._plotter.palette(0)
1472	self.gca().set_aspect('equal')
1473	basesel = scan.get_selection()
1474	attrback = self._plotter.get_line()
1475	marker = "o"
1476	if showline:
1477	basesel.set_order(["TIME"])
1478	scan.set_selection(basesel)
1479	if not (stype in ["t", "s"]):
1480	marker += ":"
1481	self._plotter.set_line(markersize=3, markeredgewidth=0)
1482
1483	if not stype:
1484	selIds = [""] # cheating
1485	sellab = "all points"
1486	elif stype == 't':
1487	selIds = range(15)
1488	sellab = "src type "
1489	else:
1490	selIds = getattr(self._data,'get'+colorby+'nos')()
1491	sellab = colorby.upper()
1492	selFunc = "set_"+colorby+"s"
1493	for idx in selIds:
1494	sel = selector() + basesel
1495	if stype:
1496	bid = getattr(basesel,'get_'+colorby+"s")()
1497	if (len(bid) > 0) and (not idx in bid):
1498	# base selection doesn't contain idx
1499	# Note summation of selector is logical sum if
1500	continue
1501	getattr(sel, selFunc)([idx])
1502	if not sel.is_empty():
1503	try:
1504	self._data.set_selection(sel)
1505	except RuntimeError, instance:
1506	if stype == 't' and str(instance).startswith("Selection contains no data."):
1507	continue
1508	else:
1509	self._data.set_selection(basesel)
1510	raise RuntimeError, instance
1511	if self._data.nrow() == 0:
1512	self._data.set_selection(basesel)
1513	continue
1514	print "Plotting direction of %s = %s" % (colorby, str(idx))
1515	# getting data to plot
1516	dir = array(self._data.get_directionval()).transpose()
1517	ra = dir[0]*180./pi
1518	dec = dir[1]*180./pi
1519	# actual plot
1520	self._plotter.set_line(label=(sellab+str(idx)))
1521	self._plotter.plot(ra,dec,marker)
1522
1523	# restore original selection
1524	self._data.set_selection(basesel)
1525	# need to plot scan pattern explicitly
1526	if showline and (stype in ["t", "s"]):
1527	dir = array(self._data.get_directionval()).transpose()
1528	ra = dir[0]*180./pi
1529	dec = dir[1]*180./pi
1530	self._plotter.set_line(label="scan pattern")
1531	self._plotter.plot(ra,dec,":")
1532	# set color for only this line
1533	self._plotter.lines[-1][0].set_color("gray")
1534
1535	xlab = 'RA [deg.]'
1536	ylab = 'Declination [deg.]'
1537	self._plotter.set_axes('xlabel', xlab)
1538	self._plotter.set_axes('ylabel', ylab)
1539	self._plotter.set_axes('title', 'Telescope pointings')
1540	if stype: self._plotter.legend(self._legendloc)
1541	else: self._plotter.legend(None)
1542	# reverse x-axis
1543	xmin, xmax = self.gca().get_xlim()
1544	self._plotter.set_limits(xlim=[xmax,xmin])
1545
1546	self._plotter.release()
1547	self._plotter.show(hardrefresh=False)
1548	# reset line settings
1549	self._plotter.set_line(**attrback)
1550	return
1551
1552	def plotpointing(self, scan=None, outfile=None):
1553	"""
1554	plot telescope pointings
1555	"""
1556	visible = rcParams['plotter.gui']
1557	from matplotlib import pylab as PL
1558	from numpy import array, pi
1559	if self._plotter and (PL.gcf() == self._plotter.figure):
1560	# the current figure is ASAP plotter. Use mpl plotter
1561	figids = PL.get_fignums()
1562	PL.figure(max(figids[-1],1))
1563
1564	if not visible or not self._visible:
1565	PL.ioff()
1566	from matplotlib.backends.backend_agg import FigureCanvasAgg
1567	PL.gcf().canvas.switch_backends(FigureCanvasAgg)
1568	self._data = scan
1569	dir = array(self._data.get_directionval()).transpose()
1570	ra = dir[0]*180./pi
1571	dec = dir[1]*180./pi
1572	PL.cla()
1573	#PL.ioff()
1574	PL.clf()
1575	# Adjust subplot margins
1576	if not self._margins or len(self._margins) != 6:
1577	self.set_margin(refresh=False)
1578	lef, bot, rig, top, wsp, hsp = self._margins
1579	PL.gcf().subplots_adjust(left=lef,bottom=bot,right=rig,top=top,
1580	wspace=wsp,hspace=hsp)
1581	ax = PL.gca()
1582	#ax = PL.axes([0.1,0.1,0.8,0.8])
1583	#ax = PL.axes([0.1,0.1,0.8,0.8])
1584	ax.set_aspect('equal')
1585	PL.plot(ra, dec, 'b,')
1586	PL.xlabel('RA [deg.]')
1587	PL.ylabel('Declination [deg.]')
1588	PL.title('Telescope pointings')
1589	[xmin,xmax,ymin,ymax] = PL.axis()
1590	PL.axis([xmax,xmin,ymin,ymax])
1591	PL.ion()
1592	PL.draw()
1593	if matplotlib.get_backend() == 'Qt4Agg': PL.gcf().show()
1594	if (outfile is not None):
1595	PL.savefig(outfile)
1596
1597	# plot total power data
1598	# plotting in time is not yet implemented..
1599	@asaplog_post_dec
1600	def plottp(self, scan=None):
1601	self._plotmode = "totalpower"
1602	from asap import scantable
1603	if not self._data and not scan:
1604	msg = "Input is not a scantable"
1605	raise TypeError(msg)
1606	if isinstance(scan, scantable):
1607	if self._data is not None:
1608	if scan != self._data:
1609	self._data = scan
1610	# reset
1611	self._reset()
1612	else:
1613	self._data = scan
1614	self._reset()
1615	# ranges become invalid when abcissa changes?
1616	#if self._abcunit and self._abcunit != self._data.get_unit():
1617	# self._minmaxx = None
1618	# self._minmaxy = None
1619	# self._abcunit = self._data.get_unit()
1620
1621	self._assert_plotter(action="reload")
1622	self._plotter.hold()
1623	self._plotter.clear()
1624	# Adjust subplot margins
1625	if not self._margins or len(self._margins) !=6:
1626	self.set_margin(refresh=False)
1627	lef, bot, rig, top, wsp, hsp = self._margins
1628	self._plotter.figure.subplots_adjust(
1629	left=lef,bottom=bot,right=rig,top=top,wspace=wsp,hspace=hsp)
1630	if self.casabar_exists(): self._plotter.figmgr.casabar.disable_button()
1631	self._plottp(self._data)
1632	if self._minmaxy is not None:
1633	self._plotter.set_limits(ylim=self._minmaxy)
1634	self._plotter.release()
1635	self._plotter.tidy()
1636	self._plotter.show(hardrefresh=False)
1637	return
1638
1639	def _plottp(self,scan):
1640	"""
1641	private method for plotting total power data
1642	"""
1643	from numpy import ma, array, arange, logical_not
1644	r=0
1645	nr = scan.nrow()
1646	a0,b0 = -1,-1
1647	allxlim = []
1648	allylim = []
1649	y=[]
1650	self._plotter.set_panels()
1651	self._plotter.palette(0)
1652	#title
1653	#xlab = self._abcissa and self._abcissa[panelcount] \
1654	# or scan._getabcissalabel()
1655	#ylab = self._ordinate and self._ordinate[panelcount] \
1656	# or scan._get_ordinate_label()
1657	xlab = self._abcissa or 'row number' #or Time
1658	ylab = self._ordinate or scan._get_ordinate_label()
1659	self._plotter.set_axes('xlabel',xlab)
1660	self._plotter.set_axes('ylabel',ylab)
1661	lbl = self._get_label(scan, r, 's', self._title)
1662	if isinstance(lbl, list) or isinstance(lbl, tuple):
1663	# if 0 <= panelcount < len(lbl):
1664	# lbl = lbl[panelcount]
1665	# else:
1666	# get default label
1667	lbl = self._get_label(scan, r, self._panelling, None)
1668	self._plotter.set_axes('title',lbl)
1669	y=array(scan._get_column(scan._getspectrum,-1))
1670	m = array(scan._get_column(scan._getmask,-1))
1671	y = ma.masked_array(y,mask=logical_not(array(m,copy=False)))
1672	x = arange(len(y))
1673	# try to handle spectral data somewhat...
1674	l,m = y.shape
1675	if m > 1:
1676	y=y.mean(axis=1)
1677	plotit = self._plotter.plot
1678	llbl = self._get_label(scan, r, self._stacking, None)
1679	self._plotter.set_line(label=llbl)
1680	if len(x) > 0:
1681	plotit(x,y)
1682
1683
1684	# printing header information
1685	@asaplog_post_dec
1686	def print_header(self, plot=True, fontsize=9, logger=False, selstr='', extrastr=''):
1687	"""
1688	print data (scantable) header on the plot and/or logger.
1689	To plot the header on the plot, this method should be called after
1690	plotting spectra by the method, asapplotter.plot.
1691	Parameters:
1692	plot: whether or not print header info on the plot.
1693	fontsize: header font size (valid only plot=True)
1694	logger: whether or not print header info on the logger.
1695	selstr: additional selection string (not verified)
1696	extrastr: additional string to print at the beginning (not verified)
1697	"""
1698	if not plot and not logger:
1699	return
1700	if not self._data:
1701	raise RuntimeError("No scantable has been set yet.")
1702	# Now header will be printed on plot and/or logger.
1703	# Get header information and format it.
1704	ssum=self._data._list_header()
1705	# Print Observation header to the upper-left corner of plot
1706	headstr=[ssum[0:ssum.find('Obs. Type:')]]
1707	headstr.append(ssum[ssum.find('Obs. Type:'):ssum.find('Flux Unit:')])
1708	if extrastr != '':
1709	headstr[0]=extrastr+'\n'+headstr[0]
1710	self._headtext['extrastr'] = extrastr
1711	if selstr != '':
1712	selstr += '\n'
1713	self._headtext['selstr'] = selstr
1714	ssel=(selstr+self._data.get_selection().__str__()+self._selection.__str__() or 'none')
1715	headstr.append('*Selections*\n'+ssel)
1716
1717	if plot:
1718	errmsg = "Can plot header only after the first call to plot()."
1719	self._assert_plotter(action="halt",errmsg=errmsg)
1720	self._plotter.hold()
1721	self._header_plot(headstr,fontsize=fontsize)
1722	#import time
1723	#self._plotter.figure.text(0.99,0.01,
1724	# time.strftime("%a %d %b %Y %H:%M:%S %Z"),
1725	# horizontalalignment='right',
1726	# verticalalignment='bottom',fontsize=8)
1727	self._plotter.release()
1728	if logger:
1729	selstr = "Selections: "+ssel
1730	asaplog.push("----------------\n Plot Summary\n----------------")
1731	asaplog.push(extrastr)
1732	asaplog.push(ssum[0:ssum.find('Selection:')]\
1733	+ selstr)
1734	self._headtext['string'] = headstr
1735	del ssel, ssum, headstr
1736
1737	def _header_plot(self, texts, fontsize=9):
1738	self._headtext['textobj']=[]
1739	nstcol=len(texts)
1740	for i in range(nstcol):
1741	self._headtext['textobj'].append(
1742	self._plotter.figure.text(0.03+float(i)/nstcol,0.98,
1743	texts[i],
1744	horizontalalignment='left',
1745	verticalalignment='top',
1746	fontsize=fontsize))
1747
1748	def clear_header(self):
1749	if not self._headtext['textobj']:
1750	asaplog.push("No header has been plotted. Exit without any operation")
1751	asaplog.post("WARN")
1752	elif self._assert_plotter(action="status"):
1753	self._plotter.hold()
1754	for textobj in self._headtext['textobj']:
1755	#if textobj.get_text() in self._headstring:
1756	try:
1757	textobj.remove()
1758	except NotImplementedError:
1759	self._plotter.figure.texts.pop(self._plotter.figure.texts.index(textobj))
1760	self._plotter.release()
1761	self._reset_header()
1762
1763	# plot spectra by pointing
1764	@asaplog_post_dec
1765	def plotgrid(self, scan=None,center=None,spacing=None,rows=None,cols=None):
1766	"""
1767	Plot spectra based on direction.
1768
1769	Parameters:
1770	scan: a scantable to plot
1771	center: the grid center direction (a list) of plots in the
1772	unit of DIRECTION column.
1773	(default) the center of map region
1774	spacing: a list of horizontal (R.A.) and vertical (Dec.)
1775	spacing in the unit of DIRECTION column.
1776	(default) Calculated by the extent of map region and
1777	the number of rows and cols to cover
1778	rows: number of panels (grid points) in horizontal direction
1779	cols: number of panels (grid points) in vertical direction
1780
1781	Note:
1782	- Only the first IFNO, POLNO, and BEAM in the scantable will be
1783	plotted.
1784	- This method doesn't re-grid and average spectra in scantable. Use
1785	asapgrid module to re-grid spectra before plotting with this method.
1786	Only the first spectrum is plotted in case there are multiple
1787	spectra which belong to a grid.
1788	"""
1789	self._plotmode = "grid"
1790	from asap import scantable
1791	from numpy import array, ma, cos
1792	if not self._data and not scan:
1793	msg = "No scantable is specified to plot"
1794	raise TypeError(msg)
1795	if scan:
1796	self.set_data(scan, refresh=False)
1797	del scan
1798
1799	# Rows and cols
1800	if rows:
1801	self._rows = int(rows)
1802	else:
1803	msg = "Number of rows to plot are not specified. "
1804	if self._rows:
1805	msg += "Using previous value = %d" % (self._rows)
1806	asaplog.push(msg)
1807	else:
1808	self._rows = 1
1809	msg += "Setting rows = %d" % (self._rows)
1810	asaplog.post()
1811	asaplog.push(msg)
1812	asaplog.post("WARN")
1813	if cols:
1814	self._cols = int(cols)
1815	else:
1816	msg = "Number of cols to plot are not specified. "
1817	if self._cols:
1818	msg += "Using previous value = %d" % (self._cols)
1819	asaplog.push(msg)
1820	else:
1821	self._cols = 1
1822	msg += "Setting cols = %d" % (self._cols)
1823	asaplog.post()
1824	asaplog.push(msg)
1825	asaplog.post("WARN")
1826
1827	# Center and spacing
1828	dirarr = array(self._data.get_directionval()).transpose()
1829	print "Pointing range: (x, y) = (%f - %f, %f - %f)" %\
1830	(dirarr[0].min(),dirarr[0].max(),dirarr[1].min(),dirarr[1].max())
1831	dircent = [0.5*(dirarr[0].max() + dirarr[0].min()),
1832	0.5*(dirarr[1].max() + dirarr[1].min())]
1833	del dirarr
1834	if center is None:
1835	#asaplog.post()
1836	asaplog.push("Grid center is not specified. Automatically calculated from pointing center.")
1837	#asaplog.post("WARN")
1838	#center = [dirarr[0].mean(), dirarr[1].mean()]
1839	center = dircent
1840	elif (type(center) in (list, tuple)) and len(center) > 1:
1841	from numpy import pi
1842	# make sure center_x is in +-pi of pointing center
1843	# (assumes dirs are in rad)
1844	rotnum = round(abs(center[0] - dircent[0])/(2*pi))
1845	if center[0] < dircent[0]: rotnum *= -1
1846	cenx = center[0] - rotnum2pi
1847	center = [cenx, center[1]]
1848	else:
1849	msg = "Direction of grid center should be a list of float (R.A., Dec.)"
1850	raise ValueError, msg
1851	asaplog.push("Grid center: (%f, %f) " % (center[0],center[1]))
1852
1853	if spacing is None:
1854	#asaplog.post()
1855	asaplog.push("Grid spacing not specified. Automatically calculated from map coverage")
1856	#asaplog.post("WARN")
1857	# automatically get spacing
1858	dirarr = array(self._data.get_directionval()).transpose()
1859	wx = 2. * max(abs(dirarr[0].max()-center[0]),
1860	abs(dirarr[0].min()-center[0]))
1861	wy = 2. * max(abs(dirarr[1].max()-center[1]),
1862	abs(dirarr[1].min()-center[1]))
1863	## slightly expand area to plot the edges
1864	#wx *= 1.1
1865	#wy *= 1.1
1866	xgrid = wx/max(self._cols-1.,1.)
1867	#xgrid = wx/float(max(self._cols,1.))
1868	xgrid *= cos(center[1])
1869	ygrid = wy/max(self._rows-1.,1.)
1870	#ygrid = wy/float(max(self._rows,1.))
1871	# single pointing (identical R.A. and/or Dec. for all spectra.)
1872	if xgrid == 0:
1873	xgrid = 1.
1874	if ygrid == 0:
1875	ygrid = 1.
1876	# spacing should be negative to transpose plot
1877	spacing = [- xgrid, - ygrid]
1878	del dirarr, xgrid, ygrid
1879	#elif isinstance(spacing, str):
1880	# # spacing is a quantity
1881	elif (type(spacing) in (list, tuple)) and len(spacing) > 1:
1882	for i in xrange(2):
1883	val = spacing[i]
1884	if not isinstance(val, float):
1885	raise TypeError("spacing should be a list of float")
1886	if val > 0.:
1887	spacing[i] = -val
1888	spacing = spacing[0:2]
1889	else:
1890	msg = "Invalid spacing."
1891	raise TypeError(msg)
1892	asaplog.push("Spacing: (%f, %f) (projected)" % (spacing[0],spacing[1]))
1893
1894	ntotpl = self._rows * self._cols
1895	ifs = self._data.getifnos()
1896	if len(ifs) > 1:
1897	msg = "Found multiple IFs in scantable. Only the first IF (IFNO=%d) will be plotted." % ifs[0]
1898	asaplog.post()
1899	asaplog.push(msg)
1900	asaplog.post("WARN")
1901	pols = self._data.getpolnos()
1902	if len(pols) > 1:
1903	msg = "Found multiple POLs in scantable. Only the first POL (POLNO=%d) will be plotted." % pols[0]
1904	asaplog.post()
1905	asaplog.push(msg)
1906	asaplog.post("WARN")
1907	beams = self._data.getbeamnos()
1908	if len(beams) > 1:
1909	msg = "Found multiple BEAMs in scantable. Only the first BEAM (BEAMNO=%d) will be plotted." % beams[0]
1910	asaplog.post()
1911	asaplog.push(msg)
1912	asaplog.post("WARN")
1913	self._data.set_selection(ifs=[ifs[0]],pols=[pols[0]],beams=[beams[0]])
1914	if self._data.nrow() > ntotpl:
1915	msg = "Scantable is finely sampled than plotting grids. "\
1916	+ "Only the first spectrum is plotted in each grid."
1917	asaplog.post()
1918	asaplog.push(msg)
1919	asaplog.post("WARN")
1920
1921	self._assert_plotter(action="reload")
1922	self._plotter.hold()
1923	self._reset_counter()
1924	self._plotter.legend()
1925
1926	# Adjust subplot margins
1927	if not self._margins or len(self._margins) !=6:
1928	self.set_margin(refresh=False)
1929	self._plotter.set_panels(rows=self._rows,cols=self._cols,
1930	nplots=ntotpl,margin=self._margins,ganged=True)
1931	if self.casabar_exists():
1932	self._plotter.figmgr.casabar.enable_button()
1933	# Plot helper
1934	from asap._asap import plothelper as plhelper
1935	ph = plhelper(self._data)
1936	ph.set_gridval(self._cols, self._rows, spacing[0], spacing[1],
1937	center[0], center[1], epoch="J2000", projname="SIN")
1938	# Actual plot
1939	npl = 0
1940	for irow in range(self._data.nrow()):
1941	(ix, iy) = ph.get_gpos(irow)
1942	#print("asapplotter.plotgrid: (ix, iy) = (%f, %f)" % (ix, iy))
1943	if ix < 0 or ix >= self._cols:
1944	#print "Row %d : Out of X-range (x = %f) ... skipped" % (irow, pos[0])
1945	continue
1946	ix = int(ix)
1947	if iy < 0 or iy >= self._rows:
1948	#print "Row %d : Out of Y-range (y = %f) ... skipped" % (irow,pos[1])
1949	continue
1950	iy = int(iy)
1951	ipanel = ix + iy*self._rows
1952	#print("Resolved panel Id (%d, %d): %d" % (ix, iy, ipanel))
1953	if len(self._plotter.subplots[ipanel]['lines']) > 0:
1954	#print "Row %d : panel %d lready plotted ... skipped" % (irow,ipanel)
1955	# a spectrum already plotted in the panel
1956	continue
1957	# Plotting this row
1958	#print "PLOTTING row %d (panel=%d)" % (irow, ipanel)
1959	npl += 1
1960	self._plotter.subplot(ipanel)
1961	self._plotter.palette(0,colormap=self._colormap, \
1962	linestyle=0,linestyles=self._linestyles)
1963	xlab = self._abcissa and self._abcissa[ipanel] \
1964	or self._data._getabcissalabel(irow)
1965	if self._offset and not self._abcissa:
1966	xlab += " (relative)"
1967	ylab = self._ordinate and self._ordinate[ipanel] \
1968	or self._data._get_ordinate_label()
1969	self._plotter.set_axes('xlabel', xlab)
1970	self._plotter.set_axes('ylabel', ylab)
1971	lbl = self._data.get_direction(irow)
1972	self._plotter.set_axes('title',lbl)
1973
1974	y = self._data._getspectrum(irow)
1975	# flag application
1976	mr = self._data._getflagrow(irow)
1977	if mr: # FLAGROW=True
1978	y = ma.masked_array(y,mask=mr)
1979	else:
1980	m = self._data._getmask(irow)
1981	from numpy import logical_not, logical_and
1982	### user mask is not available so far
1983	#if self._maskselection and len(self._usermask) == len(m):
1984	# if d[self._stacking](irow) in self._maskselection[self._stacking]:
1985	# m = logical_and(m, self._usermask)
1986	y = ma.masked_array(y,mask=logical_not(array(m,copy=False)))
1987
1988	x = array(self._data._getabcissa(irow))
1989	if self._offset:
1990	x += self._offset
1991	if self._minmaxx is not None:
1992	s,e = self._slice_indeces(x)
1993	x = x[s:e]
1994	y = y[s:e]
1995	if len(x) > 1024 and rcParams['plotter.decimate']:
1996	fac = len(x)/1024
1997	x = x[::fac]
1998	y = y[::fac]
1999	self._plotter.set_line(label=lbl)
2000	plotit = self._plotter.plot
2001	if self._hist: plotit = self._plotter.hist
2002	if len(x) > 0 and not mr:
2003	plotit(x,y)
2004	# xlim= self._minmaxx or [min(x),max(x)]
2005	# allxlim += xlim
2006	# ylim= self._minmaxy or [ma.minimum(y),ma.maximum(y)]
2007	# allylim += ylim
2008	# else:
2009	# xlim = self._minmaxx or []
2010	# allxlim += xlim
2011	# ylim= self._minmaxy or []
2012	# allylim += ylim
2013
2014	if npl >= ntotpl:
2015	break
2016
2017	if self._minmaxy is not None:
2018	self._plotter.set_limits(ylim=self._minmaxy)
2019	self._plotter.release()
2020	self._plotter.tidy()
2021	self._plotter.show(hardrefresh=False)
2022	return

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