source: branches/alma/python/interactivemask.py@ 1826

Last change on this file since 1826 was 1767, checked in by Kana Sugimoto, 14 years ago

New Development: No

JIRA Issue: No (no effect)

Ready for Test: Yes

Interface Changes: No

What Interface Changed: Please list interface changes

Test Programs:

Put in Release Notes: No

Module(s): None

Description: Just removed dead lines
File size: 10.3 KB
RevLine 
[1460]1from asap import rcParams
2from asap import _n_bools, mask_and, mask_or
3from asap.scantable import scantable
4
5class interactivemask:
6 """
7 The class for interactive mask selection.
8
9 Example:
[1621]10 my_mask=interactivemask(plotter,scan)
11 my_mask.set_basemask(masklist=[[0,10],[90,100]],invert=False)
12 # Do interactive mask selection
13 my_mask.select_mask()
14 finish=raw_input('Press return to finish selection.\n')
15 my_mask.finish_selection(callback=func)
16 mask=my_mask.get_mask()
[1460]17
18 Modify mask region by selecting a region on a plot with mouse.
19 """
20
[1621]21 def __init__(self,plotter=None, scan=None):
[1460]22 """
[1621]23 Create a interactive masking object.
24 Either or both 'plotter' or/and 'scan' should be defined.
25
26 Parameters:
27 plotter: an ASAP plotter object for interactive selection
28 scan: a scantable to create a mask interactively
[1460]29 """
[1621]30 # Return if GUI is not active
31 if not rcParams['plotter.gui']:
32 print 'GUI plotter is disabled.\n'
33 print 'Exit interactive mode.'
34 return
35 # Verify input parameters
36 if scan is None and plotter is None:
37 msg = "Either scantable or plotter should be defined."
38 raise TypeError(msg)
39
[1460]40 self.scan=None
[1621]41 self.p=None
42 self.newplot=False
43 if scan and isinstance(scan, scantable):
44 self.scan=scan
45 from asap.asapplotter import asapplotter
46 if plotter and isinstance(plotter,asapplotter):
47 self.p = plotter
48 if self.scan is None and isinstance(self.p._data,scantable):
49 self.scan=self.p._data
50 if self.scan is None:
51 msg = "Invalid scantable."
52 raise TypeError(msg)
53
54 self.mask=_n_bools(self.scan.nchan(),True)
55 self.callback=None
56 self.event=None
57 self.once=False
58 self.showmask=True
[1460]59 self.rect={}
60 self.xold=None
61 self.yold=None
62 self.xdataold=None
63 self.ydataold=None
64 self._polygons=[]
65
[1621]66
67 def set_basemask(self,masklist=[],invert=False):
[1460]68 """
[1621]69 Set initial channel mask.
70
[1460]71 Parameters:
72 masklist: [[min, max], [min2, max2], ...]
73 A list of pairs of start/end points (inclusive)
74 specifying the regions to be masked
75 invert: optional argument. If specified as True,
76 return an inverted mask, i.e. the regions
77 specified are excluded
[1621]78 You can reset the mask selection by running this method with
79 the default parameters.
[1460]80 """
81 # Verify input parameters
82 if not (isinstance(masklist, list) or isinstance(masklist, tuple)) \
83 or not isinstance(invert, bool):
84 msg = 'Invalid mask definition'
85 raise TypeError(msg)
86
[1621]87 # Create base mask
[1460]88 if ( len(masklist) > 0 ):
89 self.mask=self.scan.create_mask(masklist,invert=invert)
[1621]90 elif invert==True:
91 self.mask=_n_bools(self.scan.nchan(),False)
92 else:
[1460]93 self.mask=_n_bools(self.scan.nchan(),True)
94
[1621]95
96 def set_startevent(self,event):
97 """
98 Inherit an event from the parent function.
99
100 Parameters:
101 event: 'button_press_event' object to be inherited to
102 start interactive region selection .
103 """
104 from matplotlib.backend_bases import MouseEvent
105 if isinstance(event,MouseEvent) and event.name=='button_press_event':
106 self.event=event
107 else:
108 msg="Invalid event."
109 raise TypeError(msg)
110
111 def set_callback(self,callback):
112 """
113 Set callback function to run when finish_selection() is executed.
114 callback: The post processing function to run after
115 the mask selections are completed.
116 This will be overwritten if callback is defined in
117 finish_selection(callback=func)
118 """
119 self.callback=callback
120
121 def select_mask(self,once=False,showmask=True):
122 """
123 Do interactive mask selection.
124 Modify masks interactively by adding/deleting regions with
125 mouse drawing.(left-button: mask; right-button: UNmask)
126 Note that the interactive region selection is available only
127 when GUI plotter is active.
128
129 Parameters:
130 once: If specified as True, you can modify masks only
131 once. Else if False, you can modify them repeatedly.
132 showmask: If specified as True, the masked regions are plotted
133 on the plotter.
134 Note this parameter is valid only when once=True.
135 Otherwise, maskes are forced to be plotted for reference.
136 """
[1460]137 # Return if GUI is not active
138 if not rcParams['plotter.gui']:
139 print 'GUI plotter is disabled.\n'
140 print 'Exit interactive mode.'
141 return
142
[1621]143 self.once = once
144 if self.once:
145 self.showmask=showmask
146 else:
147 if not showmask: print 'Warning: showmask spcification is ignored. Mask regions are plotted anyway.'
148 self.showmask=True
149
150 #if not self.p._plotter or self.p._plotter.is_dead:
151 if not self.p or self.p._plotter.is_dead:
152 print 'A new ASAP plotter will be loaded'
[1460]153 from asap.asapplotter import asapplotter
[1621]154 self.p=asapplotter()
155 self.newplot=True
[1460]156
[1621]157 # Plot selected spectra if needed
158 if self.scan != self.p._data:
159 # Need replot
160 self.p.plot(self.scan)
[1724]161 # disable casa toolbar
162 if self.p._plotter.figmgr.casabar: self.p._plotter.figmgr.casabar.disable_button()
[1621]163 for panel in self.p._plotter.subplots:
164 xmin, xmax = panel['axes'].get_xlim()
[1667]165 marg = 0.05*abs(xmax-xmin)
[1621]166 panel['axes'].set_xlim(xmin-marg, xmax+marg)
[1667]167 if rcParams['plotter.ganged']: break
[1621]168 self.p._plotter.show()
[1460]169
[1621]170 # Plot initial mask region
171 #if self.showmask or not self.once:
172 if self.showmask:
173 self._plot_mask()
174 print ''
175 print 'Selected regions are shaded with yellow. (gray: projections)'
176 print 'Now you can modify the selection.'
177 print 'Draw rectangles with Left-mouse to add the regions,'
178 print 'or with Right-mouse to exclude the regions.'
[1460]179
[1621]180
181 if self.event != None:
182 self._region_start(self.event)
183 else:
184 self.p._plotter.register('button_press',None)
185 self.p._plotter.register('button_press',self._region_start)
186
187
[1460]188 def _region_start(self,event):
189 # Do not fire event when in zooming/panning mode
[1621]190 mode = self.p._plotter.figmgr.toolbar.mode
[1460]191 if not mode =='':
192 return
193 # Return if selected point is out of panel
194 if event.inaxes == None: return
195 # Select mask/unmask region with mask
196 self.rect = {'button': event.button, 'axes': event.inaxes,
[1621]197 'x': event.x, 'y': event.y,
[1460]198 'world': [event.xdata, event.ydata,
199 event.xdata, event.ydata],
[1621]200 'pixel': [event.x, event.y,
201 event.x, event.y]}
202 self.p._plotter.register('motion_notify', self._region_draw)
203 self.p._plotter.register('button_release', self._region_end)
[1460]204
205 def _region_draw(self,event):
206 sameaxes=(event.inaxes == self.rect['axes'])
207 if sameaxes:
208 xnow=event.x
209 ynow=event.y
210 self.xold=xnow
211 self.yold=ynow
212 self.xdataold=event.xdata
213 self.ydataold=event.ydata
214 else:
215 xnow=self.xold
216 ynow=self.yold
217
[1621]218 self.p._plotter.figmgr.toolbar.draw_rubberband(event, xnow, ynow, self.rect['x'], self.rect['y'])
219
[1460]220 def _region_end(self,event):
[1621]221 self.p._plotter.register('motion_notify', None)
222 self.p._plotter.register('button_release', None)
223
[1767]224 # Delete the rubber band
[1621]225 self.p._plotter.figmgr.toolbar.release(event)
[1460]226
227 if event.inaxes == self.rect['axes']:
228 xend=event.x
229 yend=event.y
230 xdataend=event.xdata
231 ydataend=event.ydata
232 else:
233 xend=self.xold
234 yend=self.yold
235 xdataend=self.xdataold
236 ydataend=self.ydataold
237
238 self.rect['world'][2:4] = [xdataend, ydataend]
[1621]239 self.rect['pixel'][2:4] = [xend, yend]
[1460]240 self._update_mask()
[1623]241 # Clear up region selection
242 self.rect={}
243 self.xold=None
244 self.yold=None
245 self.xdataold=None
246 self.ydataold=None
[1621]247 if self.once: self.finish_selection(callback=self.callback)
[1460]248
249 def _update_mask(self):
250 # Min and Max for new mask
251 xstart=self.rect['world'][0]
252 xend=self.rect['world'][2]
253 if xstart <= xend: newlist=[xstart,xend]
254 else: newlist=[xend,xstart]
255 # Mask or unmask
256 invmask=None
257 if self.rect['button'] == 1:
258 invmask=False
259 mflg='Mask'
260 elif self.rect['button'] == 3:
261 invmask=True
262 mflg='UNmask'
263 print mflg+': ',newlist
264 newmask=self.scan.create_mask(newlist,invert=invmask)
265 # Logic operation to update mask
266 if invmask:
267 self.mask=mask_and(self.mask,newmask)
268 else:
269 self.mask=mask_or(self.mask,newmask)
270 # Plot masked regions
[1621]271 #if self.showmask or not self.once: self._plot_mask()
272 if self.showmask: self._plot_mask()
[1460]273
274 # Plot masked regions
275 def _plot_mask(self):
276 msks = []
277 msks = self.scan.get_masklist(self.mask,row=0)
278 # Get projection masks for multi-IF
279 ifs=self.scan.getifnos()
280 projs = []
281 if len(ifs) > 1:
282 row0if=self.scan.getif(0)
283 for ifno in ifs:
284 if ifno == row0if: continue
285 for row in xrange(self.scan.nrow()):
286 if self.scan.getif(row) == ifno:
287 projs.append(self.scan.get_masklist(self.mask,row=row))
288 break
289 if len(self._polygons)>0:
290 # Remove old polygons
291 for polygon in self._polygons: polygon.remove()
292 self._polygons=[]
293 # Plot new polygons
[1498]294 if len(msks) > 0:
[1621]295 npanel=len(self.p._plotter.subplots)
[1498]296 j=-1
297 for iloop in range(len(msks)*npanel):
298 i = iloop % len(msks)
299 if i == 0 : j += 1
300 if len(ifs) > 1:
301 for k in xrange(len(ifs)-1):
[1621]302 self._polygons.append(self.p._plotter.subplots[j]['axes'].axvspan(projs[k][i][0],projs[k][i][1],facecolor='#aaaaaa'))
303 self._polygons.append(self.p._plotter.subplots[j]['axes'].axvspan(msks[i][0],msks[i][1],facecolor='yellow'))
304 self.p._plotter.canvas.draw()
[1460]305
[1621]306 def finish_selection(self, callback=None):
[1623]307 """
308 Execute callback function, reset or close plotter window as
309 necessary.
310
311 Parameters:
312 callback: The post processing function to run after
313 the mask selections are completed.
314 Specifying the callback function here will overwrite
315 the one set by set_callback(func)
316
317 Note this function is automatically called at the end of
318 select_mask() if once=True.
319 """
[1621]320 if callback: self.callback=callback
321 if self.callback: self.callback()
[1622]322 if not self.event: self.p._plotter.register('button_press',None)
[1621]323 # Finish the plot
324 if not self.newplot:
325 self.clear_polygon()
326 else:
327 self.p._plotter.unmap()
328 self.p._plotter = None
329 del self.p
330 self.p=None
[1623]331 self._polygons=[]
[1621]332
333
334 def clear_polygon(self):
335 """
336 Erase masks plots from the plotter.
337 """
338 if len(self._polygons)>0:
339 # Remove old polygons
340 for polygon in self._polygons: polygon.remove()
341 self.p._plotter.show()
342 self._polygons=[]
343
344
[1460]345 def get_mask(self):
346 """
347 Get the interactively selected channel mask.
348 Returns:
349 A list of channel mask.
350 """
351 return self.mask
352
[1621]353
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