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._p.show() |
---|
85 | self._plot_mask() |
---|
86 | |
---|
87 | print '' |
---|
88 | print 'Masked regions are shaded with yellow. (gray: projections)' |
---|
89 | print 'Now you can modify mask regions.' |
---|
90 | print 'Draw rectangles with Left-mouse to add Mask region,' |
---|
91 | print 'or with Right-mouse to UNMask region.' |
---|
92 | |
---|
93 | cid = None |
---|
94 | cid = self._p.canvas.mpl_connect('button_press_event', self._region_start) |
---|
95 | finish=raw_input('Press return to calculate statistics.\n') |
---|
96 | if cid is not None: |
---|
97 | self._p.canvas.mpl_disconnect(cid) |
---|
98 | |
---|
99 | # Finish the plot |
---|
100 | self._p.unmap() |
---|
101 | self._p = None |
---|
102 | del plotter |
---|
103 | |
---|
104 | def _region_start(self,event): |
---|
105 | # Do not fire event when in zooming/panning mode |
---|
106 | mode = self._p.figmgr.toolbar.mode |
---|
107 | if not mode =='': |
---|
108 | return |
---|
109 | # Return if selected point is out of panel |
---|
110 | if event.inaxes == None: return |
---|
111 | # Select mask/unmask region with mask |
---|
112 | height = self._p.canvas.figure.bbox.height() |
---|
113 | self.rect = {'button': event.button, 'axes': event.inaxes, |
---|
114 | 'fig': None, 'height': height, |
---|
115 | 'x': event.x, 'y': height - event.y, |
---|
116 | 'world': [event.xdata, event.ydata, |
---|
117 | event.xdata, event.ydata], |
---|
118 | 'pixel': [event.x, height - event.y, |
---|
119 | event.x, height -event.y]} |
---|
120 | self._p.register('motion_notify', self._region_draw) |
---|
121 | self._p.register('button_release', self._region_end) |
---|
122 | |
---|
123 | def _region_draw(self,event): |
---|
124 | self._p.canvas._tkcanvas.delete(self.rect['fig']) |
---|
125 | sameaxes=(event.inaxes == self.rect['axes']) |
---|
126 | if sameaxes: |
---|
127 | xnow=event.x |
---|
128 | ynow=event.y |
---|
129 | self.xold=xnow |
---|
130 | self.yold=ynow |
---|
131 | self.xdataold=event.xdata |
---|
132 | self.ydataold=event.ydata |
---|
133 | else: |
---|
134 | xnow=self.xold |
---|
135 | ynow=self.yold |
---|
136 | |
---|
137 | self.rect['fig'] = self._p.canvas._tkcanvas.create_rectangle( |
---|
138 | self.rect['x'], self.rect['y'], |
---|
139 | xnow, self.rect['height'] - ynow) |
---|
140 | |
---|
141 | def _region_end(self,event): |
---|
142 | height = self._p.canvas.figure.bbox.height() |
---|
143 | self._p.register('motion_notify', None) |
---|
144 | self._p.register('button_release', None) |
---|
145 | |
---|
146 | self._p.canvas._tkcanvas.delete(self.rect['fig']) |
---|
147 | |
---|
148 | if event.inaxes == self.rect['axes']: |
---|
149 | xend=event.x |
---|
150 | yend=event.y |
---|
151 | xdataend=event.xdata |
---|
152 | ydataend=event.ydata |
---|
153 | else: |
---|
154 | xend=self.xold |
---|
155 | yend=self.yold |
---|
156 | xdataend=self.xdataold |
---|
157 | ydataend=self.ydataold |
---|
158 | |
---|
159 | self.rect['world'][2:4] = [xdataend, ydataend] |
---|
160 | self.rect['pixel'][2:4] = [xend, height - yend] |
---|
161 | self._update_mask() |
---|
162 | |
---|
163 | def _update_mask(self): |
---|
164 | # Min and Max for new mask |
---|
165 | xstart=self.rect['world'][0] |
---|
166 | xend=self.rect['world'][2] |
---|
167 | if xstart <= xend: newlist=[xstart,xend] |
---|
168 | else: newlist=[xend,xstart] |
---|
169 | # Mask or unmask |
---|
170 | invmask=None |
---|
171 | if self.rect['button'] == 1: |
---|
172 | invmask=False |
---|
173 | mflg='Mask' |
---|
174 | elif self.rect['button'] == 3: |
---|
175 | invmask=True |
---|
176 | mflg='UNmask' |
---|
177 | print mflg+': ',newlist |
---|
178 | newmask=self.scan.create_mask(newlist,invert=invmask) |
---|
179 | # Logic operation to update mask |
---|
180 | if invmask: |
---|
181 | self.mask=mask_and(self.mask,newmask) |
---|
182 | else: |
---|
183 | self.mask=mask_or(self.mask,newmask) |
---|
184 | # Plot masked regions |
---|
185 | self._plot_mask() |
---|
186 | |
---|
187 | # Plot masked regions |
---|
188 | def _plot_mask(self): |
---|
189 | msks = [] |
---|
190 | msks = self.scan.get_masklist(self.mask,row=0) |
---|
191 | # Get projection masks for multi-IF |
---|
192 | ifs=self.scan.getifnos() |
---|
193 | projs = [] |
---|
194 | if len(ifs) > 1: |
---|
195 | row0if=self.scan.getif(0) |
---|
196 | for ifno in ifs: |
---|
197 | if ifno == row0if: continue |
---|
198 | for row in xrange(self.scan.nrow()): |
---|
199 | if self.scan.getif(row) == ifno: |
---|
200 | projs.append(self.scan.get_masklist(self.mask,row=row)) |
---|
201 | break |
---|
202 | if len(self._polygons)>0: |
---|
203 | # Remove old polygons |
---|
204 | for polygon in self._polygons: polygon.remove() |
---|
205 | self._polygons=[] |
---|
206 | # Plot new polygons |
---|
207 | if len(msks) > 0: |
---|
208 | npanel=len(self._p.subplots) |
---|
209 | j=-1 |
---|
210 | for iloop in range(len(msks)*npanel): |
---|
211 | i = iloop % len(msks) |
---|
212 | if i == 0 : j += 1 |
---|
213 | if len(ifs) > 1: |
---|
214 | for k in xrange(len(ifs)-1): |
---|
215 | self._polygons.append(self._p.subplots[j]['axes'].axvspan(projs[k][i][0],projs[k][i][1],facecolor='#aaaaaa')) |
---|
216 | self._polygons.append(self._p.subplots[j]['axes'].axvspan(msks[i][0],msks[i][1],facecolor='yellow')) |
---|
217 | self._p.canvas.draw() |
---|
218 | |
---|
219 | def get_mask(self): |
---|
220 | """ |
---|
221 | Get the interactively selected channel mask. |
---|
222 | Returns: |
---|
223 | A list of channel mask. |
---|
224 | """ |
---|
225 | return self.mask |
---|
226 | |
---|