| 1 | from asap import rcParams
|
|---|
| 2 | from asap import _n_bools, mask_and, mask_or
|
|---|
| 3 | from asap.scantable import scantable
|
|---|
| 4 |
|
|---|
| 5 | class interactivemask:
|
|---|
| 6 | """
|
|---|
| 7 | The class for interactive mask selection.
|
|---|
| 8 |
|
|---|
| 9 | Example:
|
|---|
| 10 | new_mask=interactivemask()
|
|---|
| 11 | new_mask.select_mask(scan,masklist=[[0,10],[90,100]],invert=False)
|
|---|
| 12 | mask=new_mask.get_mask()
|
|---|
| 13 |
|
|---|
| 14 | Modify mask region by selecting a region on a plot with mouse.
|
|---|
| 15 | """
|
|---|
| 16 |
|
|---|
| 17 | def __init__(self):
|
|---|
| 18 | """
|
|---|
| 19 | Create a interactive masking object
|
|---|
| 20 | """
|
|---|
| 21 | self.scan=None
|
|---|
| 22 | self.rect={}
|
|---|
| 23 | self.xold=None
|
|---|
| 24 | self.yold=None
|
|---|
| 25 | self.xdataold=None
|
|---|
| 26 | self.ydataold=None
|
|---|
| 27 | self.mask=None
|
|---|
| 28 | self._polygons=[]
|
|---|
| 29 | self._p=None
|
|---|
| 30 |
|
|---|
| 31 | def select_mask(self,scan,masklist=[],invert=False):
|
|---|
| 32 | """
|
|---|
| 33 | Do interactive mask selection.
|
|---|
| 34 | Calculate initial channel mask based on the parameters and modify
|
|---|
| 35 | it interactively by adding/deleting regions with mouse drawing.
|
|---|
| 36 | When finish modifying, press <Return> to calculate the final mask.
|
|---|
| 37 |
|
|---|
| 38 | Parameters:
|
|---|
| 39 | scan: a scantable
|
|---|
| 40 | masklist: [[min, max], [min2, max2], ...]
|
|---|
| 41 | A list of pairs of start/end points (inclusive)
|
|---|
| 42 | specifying the regions to be masked
|
|---|
| 43 | invert: optional argument. If specified as True,
|
|---|
| 44 | return an inverted mask, i.e. the regions
|
|---|
| 45 | specified are excluded
|
|---|
| 46 |
|
|---|
| 47 | Interactive region selection is available only when GUI plotter
|
|---|
| 48 | is active. When GUI plotter is disabled, this method only
|
|---|
| 49 | calculates a initial channel mask.
|
|---|
| 50 | """
|
|---|
| 51 | # Verify input parameters
|
|---|
| 52 | if not isinstance(scan, scantable):
|
|---|
| 53 | msg = 'Input is not a scantable'
|
|---|
| 54 | raise TypeError(msg)
|
|---|
| 55 | if not (isinstance(masklist, list) or isinstance(masklist, tuple)) \
|
|---|
| 56 | or not isinstance(invert, bool):
|
|---|
| 57 | msg = 'Invalid mask definition'
|
|---|
| 58 | raise TypeError(msg)
|
|---|
| 59 |
|
|---|
| 60 | self.scan=scan
|
|---|
| 61 |
|
|---|
| 62 | # Create initial mask
|
|---|
| 63 | if ( len(masklist) > 0 ):
|
|---|
| 64 | self.mask=self.scan.create_mask(masklist,invert=invert)
|
|---|
| 65 | else:
|
|---|
| 66 | self.mask=_n_bools(self.scan.nchan(),True)
|
|---|
| 67 |
|
|---|
| 68 | # Return if GUI is not active
|
|---|
| 69 | if not rcParams['plotter.gui']:
|
|---|
| 70 | print 'GUI plotter is disabled.\n'
|
|---|
| 71 | print 'Exit interactive mode.'
|
|---|
| 72 | return
|
|---|
| 73 |
|
|---|
| 74 | # Plot selected spectra
|
|---|
| 75 | if not self._p or self._p.is_dead:
|
|---|
| 76 | from asap.asapplotter import asapplotter
|
|---|
| 77 | plotter=asapplotter()
|
|---|
| 78 | self._p = plotter._plotter
|
|---|
| 79 | plotter.plot(self.scan)
|
|---|
| 80 | for panel in self._p.subplots:
|
|---|
| 81 | xmin, xmax = panel['axes'].get_xlim()
|
|---|
| 82 | marg = 0.05*(xmax-xmin)
|
|---|
| 83 | panel['axes'].set_xlim(xmin-marg, xmax+marg)
|
|---|
| 84 | self._plot_mask()
|
|---|
| 85 |
|
|---|
| 86 | print ''
|
|---|
| 87 | print 'Masked regions are shaded with yellow. (gray: projections)'
|
|---|
| 88 | print 'Now you can modify mask regions.'
|
|---|
| 89 | print 'Draw rectangles with Left-mouse to add Mask region,'
|
|---|
| 90 | print 'or with Right-mouse to UNMask region.'
|
|---|
| 91 |
|
|---|
| 92 | cid = None
|
|---|
| 93 | cid = self._p.canvas.mpl_connect('button_press_event', self._region_start)
|
|---|
| 94 | finish=raw_input('Press return to calculate statistics.\n')
|
|---|
| 95 | if cid is not None:
|
|---|
| 96 | self._p.canvas.mpl_disconnect(cid)
|
|---|
| 97 |
|
|---|
| 98 | # Finish the plot
|
|---|
| 99 | self._p.unmap()
|
|---|
| 100 | self._p = None
|
|---|
| 101 | del plotter
|
|---|
| 102 |
|
|---|
| 103 | def _region_start(self,event):
|
|---|
| 104 | # Do not fire event when in zooming/panning mode
|
|---|
| 105 | mode = self._p.figmgr.toolbar.mode
|
|---|
| 106 | if not mode =='':
|
|---|
| 107 | return
|
|---|
| 108 | # Return if selected point is out of panel
|
|---|
| 109 | if event.inaxes == None: return
|
|---|
| 110 | # Select mask/unmask region with mask
|
|---|
| 111 | height = self._p.canvas.figure.bbox.height()
|
|---|
| 112 | self.rect = {'button': event.button, 'axes': event.inaxes,
|
|---|
| 113 | 'fig': None, 'height': height,
|
|---|
| 114 | 'x': event.x, 'y': height - event.y,
|
|---|
| 115 | 'world': [event.xdata, event.ydata,
|
|---|
| 116 | event.xdata, event.ydata],
|
|---|
| 117 | 'pixel': [event.x, height - event.y,
|
|---|
| 118 | event.x, height -event.y]}
|
|---|
| 119 | self._p.register('motion_notify', self._region_draw)
|
|---|
| 120 | self._p.register('button_release', self._region_end)
|
|---|
| 121 |
|
|---|
| 122 | def _region_draw(self,event):
|
|---|
| 123 | self._p.canvas._tkcanvas.delete(self.rect['fig'])
|
|---|
| 124 | sameaxes=(event.inaxes == self.rect['axes'])
|
|---|
| 125 | if sameaxes:
|
|---|
| 126 | xnow=event.x
|
|---|
| 127 | ynow=event.y
|
|---|
| 128 | self.xold=xnow
|
|---|
| 129 | self.yold=ynow
|
|---|
| 130 | self.xdataold=event.xdata
|
|---|
| 131 | self.ydataold=event.ydata
|
|---|
| 132 | else:
|
|---|
| 133 | xnow=self.xold
|
|---|
| 134 | ynow=self.yold
|
|---|
| 135 |
|
|---|
| 136 | self.rect['fig'] = self._p.canvas._tkcanvas.create_rectangle(
|
|---|
| 137 | self.rect['x'], self.rect['y'],
|
|---|
| 138 | xnow, self.rect['height'] - ynow)
|
|---|
| 139 |
|
|---|
| 140 | def _region_end(self,event):
|
|---|
| 141 | height = self._p.canvas.figure.bbox.height()
|
|---|
| 142 | self._p.register('motion_notify', None)
|
|---|
| 143 | self._p.register('button_release', None)
|
|---|
| 144 |
|
|---|
| 145 | self._p.canvas._tkcanvas.delete(self.rect['fig'])
|
|---|
| 146 |
|
|---|
| 147 | if event.inaxes == self.rect['axes']:
|
|---|
| 148 | xend=event.x
|
|---|
| 149 | yend=event.y
|
|---|
| 150 | xdataend=event.xdata
|
|---|
| 151 | ydataend=event.ydata
|
|---|
| 152 | else:
|
|---|
| 153 | xend=self.xold
|
|---|
| 154 | yend=self.yold
|
|---|
| 155 | xdataend=self.xdataold
|
|---|
| 156 | ydataend=self.ydataold
|
|---|
| 157 |
|
|---|
| 158 | self.rect['world'][2:4] = [xdataend, ydataend]
|
|---|
| 159 | self.rect['pixel'][2:4] = [xend, height - yend]
|
|---|
| 160 | self._update_mask()
|
|---|
| 161 |
|
|---|
| 162 | def _update_mask(self):
|
|---|
| 163 | # Min and Max for new mask
|
|---|
| 164 | xstart=self.rect['world'][0]
|
|---|
| 165 | xend=self.rect['world'][2]
|
|---|
| 166 | if xstart <= xend: newlist=[xstart,xend]
|
|---|
| 167 | else: newlist=[xend,xstart]
|
|---|
| 168 | # Mask or unmask
|
|---|
| 169 | invmask=None
|
|---|
| 170 | if self.rect['button'] == 1:
|
|---|
| 171 | invmask=False
|
|---|
| 172 | mflg='Mask'
|
|---|
| 173 | elif self.rect['button'] == 3:
|
|---|
| 174 | invmask=True
|
|---|
| 175 | mflg='UNmask'
|
|---|
| 176 | print mflg+': ',newlist
|
|---|
| 177 | newmask=self.scan.create_mask(newlist,invert=invmask)
|
|---|
| 178 | # Logic operation to update mask
|
|---|
| 179 | if invmask:
|
|---|
| 180 | self.mask=mask_and(self.mask,newmask)
|
|---|
| 181 | else:
|
|---|
| 182 | self.mask=mask_or(self.mask,newmask)
|
|---|
| 183 | # Plot masked regions
|
|---|
| 184 | self._plot_mask()
|
|---|
| 185 |
|
|---|
| 186 | # Plot masked regions
|
|---|
| 187 | def _plot_mask(self):
|
|---|
| 188 | msks = []
|
|---|
| 189 | msks = self.scan.get_masklist(self.mask,row=0)
|
|---|
| 190 | # Get projection masks for multi-IF
|
|---|
| 191 | ifs=self.scan.getifnos()
|
|---|
| 192 | projs = []
|
|---|
| 193 | if len(ifs) > 1:
|
|---|
| 194 | row0if=self.scan.getif(0)
|
|---|
| 195 | for ifno in ifs:
|
|---|
| 196 | if ifno == row0if: continue
|
|---|
| 197 | for row in xrange(self.scan.nrow()):
|
|---|
| 198 | if self.scan.getif(row) == ifno:
|
|---|
| 199 | projs.append(self.scan.get_masklist(self.mask,row=row))
|
|---|
| 200 | break
|
|---|
| 201 | if len(self._polygons)>0:
|
|---|
| 202 | # Remove old polygons
|
|---|
| 203 | for polygon in self._polygons: polygon.remove()
|
|---|
| 204 | self._polygons=[]
|
|---|
| 205 | # Plot new polygons
|
|---|
| 206 | if len(msks) < 1: return
|
|---|
| 207 | npanel=len(self._p.subplots)
|
|---|
| 208 | j=-1
|
|---|
| 209 | for iloop in range(len(msks)*npanel):
|
|---|
| 210 | i = iloop % len(msks)
|
|---|
| 211 | if i == 0 : j += 1
|
|---|
| 212 | if len(ifs) > 1:
|
|---|
| 213 | for k in xrange(len(ifs)-1):
|
|---|
| 214 | self._polygons.append(self._p.subplots[j]['axes'].axvspan(projs[k][i][0],projs[k][i][1],facecolor='#aaaaaa'))
|
|---|
| 215 | self._polygons.append(self._p.subplots[j]['axes'].axvspan(msks[i][0],msks[i][1],facecolor='yellow'))
|
|---|
| 216 | self._p.show()
|
|---|
| 217 |
|
|---|
| 218 | def get_mask(self):
|
|---|
| 219 | """
|
|---|
| 220 | Get the interactively selected channel mask.
|
|---|
| 221 | Returns:
|
|---|
| 222 | A list of channel mask.
|
|---|
| 223 | """
|
|---|
| 224 | return self.mask
|
|---|
| 225 |
|
|---|
