| 1 | from asap import rcParams, print_log
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| 2 | from numarray import logical_and
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| 3 |
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| 4 | class asapplotter:
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| 5 | """
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| 6 | The ASAP plotter.
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| 7 | By default the plotter is set up to plot polarisations
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| 8 | 'colour stacked' and scantables across panels.
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| 9 | Note:
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| 10 | Currenly it only plots 'spectra' not Tsys or
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| 11 | other variables.
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| 12 | """
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| 13 | def __init__(self, visible=None):
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| 14 | self._visible = rcParams['plotter.gui']
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| 15 | if visible is not None:
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| 16 | self._visible = visible
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| 17 | self._plotter = self._newplotter()
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| 18 |
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| 19 |
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| 20 | self._panelling = None
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| 21 | self._stacking = None
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| 22 | self.set_panelling()
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| 23 | self.set_stacking()
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| 24 | self._rows = None
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| 25 | self._cols = None
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| 26 | self._autoplot = False
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| 27 | self._minmaxx = None
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| 28 | self._minmaxy = None
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| 29 | self._datamask = None
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| 30 | self._data = None
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| 31 | self._lmap = None
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| 32 | self._title = None
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| 33 | self._ordinate = None
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| 34 | self._abcissa = None
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| 35 | self._abcunit = None
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| 36 | self._usermask = []
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| 37 | self._maskselection = None
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| 38 | from asap._asap import selector
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| 39 | self._selection = selector()
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| 40 |
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| 41 | def _translate(self, instr):
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| 42 | keys = "s b i p t".split()
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| 43 | if isinstance(instr, str):
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| 44 | for key in keys:
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| 45 | if instr.lower().startswith(key):
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| 46 | return key
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| 47 | return None
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| 48 |
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| 49 | def _newplotter(self):
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| 50 | if self._visible:
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| 51 | from asap.asaplotgui import asaplotgui as asaplot
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| 52 | else:
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| 53 | from asap.asaplot import asaplot
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| 54 | return asaplot()
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| 55 |
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| 56 |
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| 57 | def plot(self, scan=None):
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| 58 | """
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| 59 | Plot a scantable.
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| 60 | Parameters:
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| 61 | scan: a scantable
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| 62 | Note:
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| 63 | If a scantable was specified in a previous call
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| 64 | to plot, no argument has to be given to 'replot'
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| 65 | NO checking is done that the abcissas of the scantable
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| 66 | are consistent e.g. all 'channel' or all 'velocity' etc.
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| 67 | """
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| 68 | if self._plotter.is_dead:
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| 69 | self._plotter = self._newplotter()
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| 70 | self._plotter.hold()
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| 71 | self._plotter.clear()
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| 72 | from asap import scantable
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| 73 | if not self._data and not scan:
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| 74 | print "please provide a scantable to plot"
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| 75 | if isinstance(scan, scantable):
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| 76 | if self._data is not None:
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| 77 | if scan != self._data:
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| 78 | self._data = scan
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| 79 | # reset
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| 80 | self._reset()
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| 81 | else:
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| 82 | self._data = scan
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| 83 | self._reset()
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| 84 | # ranges become invalid when unit changes
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| 85 | if self._abcunit and self._abcunit != self._data.get_unit():
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| 86 | self._minmaxx = None
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| 87 | self._minmaxy = None
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| 88 | self._abcunit = self._data.get_unit()
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| 89 | self._datamask = None
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| 90 | self._plot(self._data)
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| 91 | if self._minmaxy is not None:
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| 92 | print "setting limits"
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| 93 | self._plotter.set_limits(ylim=self._minmaxy)
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| 94 | self._plotter.release()
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| 95 | print_log()
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| 96 | return
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| 97 |
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| 98 | def set_mode(self, stacking=None, panelling=None):
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| 99 | """
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| 100 | Set the plots look and feel, i.e. what you want to see on the plot.
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| 101 | Parameters:
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| 102 | stacking: tell the plotter which variable to plot
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| 103 | as line color overlays (default 'pol')
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| 104 | panelling: tell the plotter which variable to plot
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| 105 | across multiple panels (default 'scan'
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| 106 | Note:
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| 107 | Valid modes are:
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| 108 | 'beam' 'Beam' 'b': Beams
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| 109 | 'if' 'IF' 'i': IFs
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| 110 | 'pol' 'Pol' 'p': Polarisations
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| 111 | 'scan' 'Scan' 's': Scans
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| 112 | 'time' 'Time' 't': Times
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| 113 | """
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| 114 | msg = "Invalid mode"
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| 115 | if not self.set_panelling(panelling) or \
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| 116 | not self.set_stacking(stacking):
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| 117 | if rcParams['verbose']:
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| 118 | print msg
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| 119 | return
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| 120 | else:
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| 121 | raise TypeError(msg)
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| 122 | if self._data: self.plot(self._data)
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| 123 | return
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| 124 |
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| 125 | def set_panelling(self, what=None):
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| 126 | mode = what
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| 127 | if mode is None:
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| 128 | mode = rcParams['plotter.panelling']
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| 129 | md = self._translate(mode)
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| 130 | if md:
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| 131 | self._panelling = md
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| 132 | self._title = None
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| 133 | return True
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| 134 | return False
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| 135 |
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| 136 | def set_layout(self,rows=None,cols=None):
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| 137 | """
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| 138 | Set the multi-panel layout, i.e. how many rows and columns plots
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| 139 | are visible.
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| 140 | Parameters:
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| 141 | rows: The number of rows of plots
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| 142 | cols: The number of columns of plots
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| 143 | Note:
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| 144 | If no argument is given, the potter reverts to its auto-plot
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| 145 | behaviour.
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| 146 | """
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| 147 | self._rows = rows
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| 148 | self._cols = cols
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| 149 | if self._data: self.plot(self._data)
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| 150 | return
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| 151 |
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| 152 | def set_stacking(self, what=None):
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| 153 | mode = what
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| 154 | if mode is None:
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| 155 | mode = rcParams['plotter.stacking']
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| 156 | md = self._translate(mode)
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| 157 | if md:
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| 158 | self._stacking = md
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| 159 | self._lmap = None
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| 160 | return True
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| 161 | return False
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| 162 |
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| 163 | def set_range(self,xstart=None,xend=None,ystart=None,yend=None):
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| 164 | """
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| 165 | Set the range of interest on the abcissa of the plot
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| 166 | Parameters:
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| 167 | [x,y]start,[x,y]end: The start and end points of the 'zoom' window
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| 168 | Note:
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| 169 | These become non-sensical when the unit changes.
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| 170 | use plotter.set_range() without parameters to reset
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| 171 |
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| 172 | """
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| 173 | if xstart is None and xend is None:
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| 174 | self._minmaxx = None
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| 175 | else:
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| 176 | self._minmaxx = [xstart,xend]
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| 177 | if ystart is None and yend is None:
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| 178 | self._minmaxy = None
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| 179 | else:
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| 180 | self._minmaxy = [ystart,yend]
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| 181 | if self._data: self.plot(self._data)
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| 182 | return
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| 183 |
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| 184 | def set_legend(self, mp=None):
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| 185 | """
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| 186 | Specify a mapping for the legend instead of using the default
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| 187 | indices:
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| 188 | Parameters:
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| 189 | mp: a list of 'strings'. This should have the same length
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| 190 | as the number of elements on the legend and then maps
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| 191 | to the indeces in order. It is possible to uses latex
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| 192 | math expression. These have to be enclosed in r'', e.g. r'$x^{2}$'
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| 193 |
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| 194 | Example:
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| 195 | If the data has two IFs/rest frequencies with index 0 and 1
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| 196 | for CO and SiO:
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| 197 | plotter.set_stacking('i')
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| 198 | plotter.set_legend(['CO','SiO'])
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| 199 | plotter.plot()
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| 200 | plotter.set_legend([r'$^{12}CO$', r'SiO'])
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| 201 | """
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| 202 | self._lmap = mp
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| 203 | if self._data: self.plot(self._data)
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| 204 | return
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| 205 |
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| 206 | def set_title(self, title=None):
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| 207 | """
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| 208 | Set the title of the plot. If multiple panels are plotted,
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| 209 | multiple titles have to be specified.
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| 210 | Example:
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| 211 | # two panels are visible on the plotter
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| 212 | plotter.set_title(["First Panel","Second Panel"])
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| 213 | """
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| 214 | self._title = title
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| 215 | if self._data: self.plot(self._data)
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| 216 | return
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| 217 |
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| 218 | def set_ordinate(self, ordinate=None):
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| 219 | """
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| 220 | Set the y-axis label of the plot. If multiple panels are plotted,
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| 221 | multiple labels have to be specified.
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| 222 | Example:
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| 223 | # two panels are visible on the plotter
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| 224 | plotter.set_ordinate(["First Y-Axis","Second Y-Axis"])
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| 225 | """
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| 226 | self._ordinate = ordinate
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| 227 | if self._data: self.plot(self._data)
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| 228 | return
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| 229 |
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| 230 | def set_abcissa(self, abcissa=None):
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| 231 | """
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| 232 | Set the x-axis label of the plot. If multiple panels are plotted,
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| 233 | multiple labels have to be specified.
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| 234 | Example:
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| 235 | # two panels are visible on the plotter
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| 236 | plotter.set_ordinate(["First X-Axis","Second X-Axis"])
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| 237 | """
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| 238 | self._abcissa = abcissa
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| 239 | if self._data: self.plot(self._data)
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| 240 | return
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| 241 |
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| 242 | def set_colors(self, colormap):
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| 243 | """
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| 244 | Set the colors to be used. The plotter will cycle through
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| 245 | these colors when lines are overlaid (stacking mode).
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| 246 | Example:
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| 247 | plotter.set_colors("red green blue")
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| 248 | # If for example four lines are overlaid e.g I Q U V
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| 249 | # 'I' will be 'red', 'Q' will be 'green', U will be 'blue'
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| 250 | # and 'V' will be 'red' again.
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| 251 | """
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| 252 | if isinstance(colormap,str):
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| 253 | colormap = colormap.split()
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| 254 | self._plotter.palette(0,colormap=colormap)
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| 255 | if self._data: self.plot(self._data)
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| 256 |
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| 257 | def set_linestyles(self, linestyles):
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| 258 | """
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| 259 | Set the linestyles to be used. The plotter will cycle through
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| 260 | these linestyles when lines are overlaid (stacking mode) AND
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| 261 | only one color has been set.
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| 262 | Parameters:
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| 263 | linestyles: a list of linestyles to use.
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| 264 | 'line', 'dashed', 'dotted', 'dashdot',
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| 265 | 'dashdotdot' and 'dashdashdot' are
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| 266 | possible
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| 267 |
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| 268 | Example:
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| 269 | plotter.set_colors("black")
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| 270 | plotter.set_linestyles("line dashed dotted dashdot")
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| 271 | # If for example four lines are overlaid e.g I Q U V
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| 272 | # 'I' will be 'solid', 'Q' will be 'dashed',
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| 273 | # U will be 'dotted' and 'V' will be 'dashdot'.
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| 274 | """
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| 275 | if isinstance(linestyles,str):
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| 276 | linestyles = linestyles.split()
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| 277 | self._plotter.palette(color=0,linestyle=0,linestyles=linestyles)
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| 278 | if self._data: self.plot(self._data)
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| 279 |
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| 280 | def save(self, filename=None, orientation=None, dpi=None):
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| 281 | """
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| 282 | Save the plot to a file. The know formats are 'png', 'ps', 'eps'.
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| 283 | Parameters:
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| 284 | filename: The name of the output file. This is optional
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| 285 | and autodetects the image format from the file
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| 286 | suffix. If non filename is specified a file
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| 287 | called 'yyyymmdd_hhmmss.png' is created in the
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| 288 | current directory.
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| 289 | orientation: optional parameter for postscript only (not eps).
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| 290 | 'landscape', 'portrait' or None (default) are valid.
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| 291 | If None is choosen for 'ps' output, the plot is
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| 292 | automatically oriented to fill the page.
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| 293 | dpi: The dpi of the output non-ps plot
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| 294 | """
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| 295 | self._plotter.save(filename,orientation,dpi)
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| 296 | return
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| 297 |
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| 298 |
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| 299 | def set_mask(self, mask=None, selection=None):
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| 300 | """
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| 301 | Set a plotting mask for a specific polarization.
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| 302 | This is useful for masking out "noise" Pangle outside a source.
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| 303 | Parameters:
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| 304 | mask: a mask from scantable.create_mask
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| 305 | selection: the spectra to apply the mask to.
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| 306 | Example:
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| 307 | select = selector()
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| 308 | select.setpolstrings("Pangle")
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| 309 | plotter.set_mask(mymask, select)
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| 310 | """
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| 311 | if not self._data:
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| 312 | msg = "Can only set mask after a first call to plot()"
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| 313 | if rcParams['verbose']:
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| 314 | print msg
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| 315 | return
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| 316 | else:
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| 317 | raise RuntimeError(msg)
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| 318 | if len(mask):
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| 319 | if isinstance(mask, list) or isinstance(mask, tuple):
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| 320 | self._usermask = array(mask)
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| 321 | else:
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| 322 | self._usermask = mask
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| 323 | if mask is None and selection is None:
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| 324 | self._usermask = []
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| 325 | self._maskselection = None
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| 326 | from asap._asap import selector
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| 327 | if isinstance(selection, selector):
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| 328 | self._maskselection = {'b': selection._getbeams(),
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| 329 | 's': selection._getscans(),
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| 330 | 'i': selection._getifs(),
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| 331 | 'p': selection._getpols(),
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| 332 | 't': [] }
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| 333 | else:
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| 334 | self._maskselection = None
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| 335 | self.plot(self._data)
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| 336 |
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| 337 | def _slice_indeces(self, data):
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| 338 | mn = self._minmaxx[0]
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| 339 | mx = self._minmaxx[1]
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| 340 | asc = data[0] < data[-1]
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| 341 | start=0
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| 342 | end = len(data)-1
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| 343 | inc = 1
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| 344 | if not asc:
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| 345 | start = len(data)-1
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| 346 | end = 0
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| 347 | inc = -1
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| 348 | # find min index
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| 349 | while data[start] < mn:
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| 350 | start+= inc
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| 351 | # find max index
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| 352 | while data[end] > mx:
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| 353 | end-=inc
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| 354 | end +=1
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| 355 | if start > end:
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| 356 | return end,start
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| 357 | return start,end
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| 358 |
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| 359 | def _reset(self):
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| 360 | self._usermask = []
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| 361 | self._usermaskspectra = None
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| 362 | self.set_selection(None, False)
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| 363 |
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| 364 | def _plot(self, scan):
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| 365 | savesel = scan._getselection()
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| 366 | scan._setselection(self._selection)
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| 367 | d = {'b': scan.getbeam, 's': scan.getscan,
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| 368 | 'i': scan.getif, 'p': scan.getpol, 't': scan._gettime }
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| 369 |
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| 370 | polmodes = dict(zip(self._selection._getpols(),self._selection._getpoltypes()))
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| 371 | n,nstack = self._get_selected_n(scan)
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| 372 | maxpanel, maxstack = 9,4
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| 373 | if n > maxpanel or nstack > maxstack:
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| 374 | from asap import asaplog
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| 375 | msg ="Scan to be plotted contains more than %d selections.\n" \
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| 376 | "Selecting first %d selections..." % (maxpanel,maxpanel)
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| 377 | asaplog.push(msg)
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| 378 | print_log()
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| 379 | n = min(n,maxpanel)
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| 380 | nstack = min(n,maxstack)
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| 381 |
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| 382 | if n > 1:
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| 383 | ganged = rcParams['plotter.ganged']
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| 384 | if self._rows and self._cols:
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| 385 | n = min(n,self._rows*self._cols)
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| 386 | self._plotter.set_panels(rows=self._rows,cols=self._cols,
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| 387 | nplots=n,ganged=ganged)
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| 388 | else:
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| 389 | self._plotter.set_panels(rows=n,cols=0,nplots=n,ganged=ganged)
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| 390 | else:
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| 391 | self._plotter.set_panels()
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| 392 | r=0
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| 393 | nr = scan.nrow()
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| 394 | a0,b0 = -1,-1
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| 395 | allxlim = []
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| 396 | newpanel=True
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| 397 | panelcount,stackcount = 0,0
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| 398 | while r < nr:
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| 399 | a = d[self._panelling](r)
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| 400 | b = d[self._stacking](r)
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| 401 | # print r
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| 402 | # print " a: ",a,a0,panelcount,n
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| 403 | # print " b: ",b,b0,stackcount,nstack
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| 404 | if a > a0 and panelcount < n:
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| 405 | if n > 1:
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| 406 | self._plotter.subplot(panelcount)
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| 407 | #pindex += 1
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| 408 | self._plotter.palette(0)
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| 409 | #title
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| 410 | xlab = self._abcissa and self._abcissa[panelcount] \
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| 411 | or scan._getabcissalabel()
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| 412 | ylab = self._ordinate and self._ordinate[panelcount] \
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| 413 | or scan._get_ordinate_label()
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| 414 | self._plotter.set_axes('xlabel',xlab)
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| 415 | self._plotter.set_axes('ylabel',ylab)
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| 416 | lbl = self._get_label(scan, r, self._panelling, self._title)
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| 417 | if isinstance(lbl, list) or isinstance(lbl, tuple):
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| 418 | if 0 <= panelcount < len(lbl):
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| 419 | lbl = lbl[panelcount]
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| 420 | else:
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| 421 | # get default label
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| 422 | lbl = self._get_label(scan, r, self._panelling, None)
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| 423 | self._plotter.set_axes('title',lbl)
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| 424 | newpanel = True
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| 425 | stackcount =0
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| 426 | panelcount += 1
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| 427 | if (b > b0 or newpanel) and stackcount < nstack:
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| 428 | y = []
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| 429 | if len(polmodes):
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| 430 | y = scan._getspectrum(r, polmodes[scan.getpol(r)])
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| 431 | else:
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| 432 | y = scan._getspectrum(r)
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| 433 | m = scan._getmask(r)
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| 434 | if self._maskselection and len(self._usermask) == len(m):
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| 435 | if d[self._stacking](r) in self._maskselection[self._stacking]:
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| 436 | print "debug"
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| 437 | m = logical_and(m, self._usermask)
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| 438 | x = scan._getabcissa(r)
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| 439 | if self._minmaxx is not None:
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| 440 | s,e = self._slice_indeces(x)
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| 441 | x = x[s:e]
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| 442 | y = y[s:e]
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|---|
| 443 | m = m[s:e]
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| 444 | if len(x) > 1024 and True:#rcParams['plotter.decimate']:
|
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| 445 | fac = len(x)/1024
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| 446 | x = x[::fac]
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| 447 | m = m[::fac]
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|---|
| 448 | y = y[::fac]
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|---|
| 449 | llbl = self._get_label(scan, r, self._stacking, self._lmap)
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|---|
| 450 | if isinstance(llbl, list) or isinstance(llbl, tuple):
|
|---|
| 451 | if 0 <= stackcount < len(llbl):
|
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| 452 | # use user label
|
|---|
| 453 | llbl = llbl[stackcount]
|
|---|
| 454 | else:
|
|---|
| 455 | # get default label
|
|---|
| 456 | llbl = self._get_label(scan, r, self._stacking, None)
|
|---|
| 457 | self._plotter.set_line(label=llbl)
|
|---|
| 458 | self._plotter.plot(x,y,m)
|
|---|
| 459 | xlim= self._minmaxx or [min(x),max(x)]
|
|---|
| 460 | allxlim += xlim
|
|---|
| 461 | stackcount += 1
|
|---|
| 462 | # last in colour stack -> autoscale x
|
|---|
| 463 | if stackcount == nstack:
|
|---|
| 464 | allxlim.sort()
|
|---|
| 465 | self._plotter.axes.set_xlim([allxlim[0],allxlim[-1]])
|
|---|
| 466 | # clear
|
|---|
| 467 | allxlim =[]
|
|---|
| 468 |
|
|---|
| 469 | newpanel = False
|
|---|
| 470 | a0=a
|
|---|
| 471 | b0=b
|
|---|
| 472 | # ignore following rows
|
|---|
| 473 | if (panelcount == n) and (stackcount == nstack):
|
|---|
| 474 | pass#break
|
|---|
| 475 | r+=1 # next row
|
|---|
| 476 |
|
|---|
| 477 | scan._setselection(savesel)
|
|---|
| 478 |
|
|---|
| 479 | def set_selection(self, selection=None, refresh=True):
|
|---|
| 480 | from asap._asap import selector
|
|---|
| 481 | self._selection = selection or selector()
|
|---|
| 482 | d0 = {'s': 'SCANNO', 'b': 'BEAMNO', 'i':'IFNO',
|
|---|
| 483 | 'p': 'POLNO', 'c': 'CYCLENO', 't' : 'TIME' }
|
|---|
| 484 | order = [d0[self._panelling],d0[self._stacking]]
|
|---|
| 485 | self._selection._setorder(order)
|
|---|
| 486 | if self._data and refresh: self.plot(self._data)
|
|---|
| 487 |
|
|---|
| 488 | def _get_selected_n(self, scan):
|
|---|
| 489 | d1 = {'b': scan.nbeam, 's': scan.nscan,
|
|---|
| 490 | 'i': scan.nif, 'p': scan.npol, 't': scan.ncycle }
|
|---|
| 491 | d2 = { 'b': len(self._selection._getbeams()),
|
|---|
| 492 | 's': len(self._selection._getscans()),
|
|---|
| 493 | 'i': len(self._selection._getifs()),
|
|---|
| 494 | 'p': len(self._selection._getpols()),
|
|---|
| 495 | 't': len(self._selection._getcycles()) }
|
|---|
| 496 | n = d2[self._panelling] or d1[self._panelling]()
|
|---|
| 497 | nstack = d2[self._stacking] or d1[self._stacking]()
|
|---|
| 498 | return n,nstack
|
|---|
| 499 |
|
|---|
| 500 | def _get_label(self, scan, row, mode, userlabel=None):
|
|---|
| 501 | pms = dict(zip(self._selection._getpols(),self._selection._getpoltypes()))
|
|---|
| 502 | if len(pms):
|
|---|
| 503 | poleval = scan._getpollabel(scan.getpol(row),pms[scan.getpol(row)])
|
|---|
| 504 | else:
|
|---|
| 505 | poleval = scan._getpollabel(scan.getpol(row),scan.poltype())
|
|---|
| 506 | d = {'b': "Beam "+str(scan.getbeam(row)),
|
|---|
| 507 | 's': scan._getsourcename(row),
|
|---|
| 508 | 'i': "IF"+str(scan.getif(row)),
|
|---|
| 509 | 'p': scan.poltype().capitalize()+" "+poleval,
|
|---|
| 510 | 't': scan._gettime(row) }
|
|---|
| 511 | return userlabel or d[mode]
|
|---|
