From d78b0f1cff4228bc8eecd5286659567ed58a7d53 Mon Sep 17 00:00:00 2001 From: Marcel Paffrath Date: Tue, 13 Oct 2015 18:41:55 +0200 Subject: [PATCH] added polygon selection!! --- pylot/core/active/surveyPlotTools.py | 189 +++++++++++++++++++++++---- 1 file changed, 166 insertions(+), 23 deletions(-) diff --git a/pylot/core/active/surveyPlotTools.py b/pylot/core/active/surveyPlotTools.py index 70a64e5e..33b21812 100644 --- a/pylot/core/active/surveyPlotTools.py +++ b/pylot/core/active/surveyPlotTools.py @@ -1,4 +1,6 @@ import matplotlib.pyplot as plt +import math +import numpy as np plt.interactive(True) class regions(object): @@ -31,12 +33,14 @@ class regions(object): self._y0 = [] self._x1 = [] self._y1 = [] + self._polyx = [] + self._polyy = [] self._allpicks = None self.shots_found = {} self.shots_for_deletion = {} self._generateList() - def _onselect(self, eclick, erelease): + def _onselect_clicks(self, eclick, erelease): 'eclick and erelease are matplotlib events at press and release' #print ' startposition : (%f, %f)' % (eclick.xdata, eclick.ydata) #print ' endposition : (%f, %f)' % (erelease.xdata, erelease.ydata) @@ -46,26 +50,107 @@ class regions(object): y0 = min(eclick.ydata, erelease.ydata) y1 = max(eclick.ydata, erelease.ydata) - shots = self.findTracesInShotDict((x0, x1), (y0, y1)) + shots, numtraces = self.findTracesInShotDict((x0, x1), (y0, y1)) + print('Found %d traces in rectangle: %s' %(numtraces, shots)) + + key = self.getKey() + self.shots_found[key] = {'shots': shots, + 'selection': 'rect', + 'xvalues': (x0, x1), + 'yvalues': (y0, y1)} + self.markRectangle((x0, x1), (y0, y1), key) + + def _onselect_verts(self, verts): + x = verts[0][0] + y = verts[0][1] + self._polyx.append(x) + self._polyy.append(y) + + self.drawPolyLine() + + def _onpress(self, event): + if event.button == 3: + self.disconnectPoly() + + def getKey(self): if self.shots_found.keys() == []: key = 1 else: key = max(self.shots_found.keys()) + 1 + return key + def drawPolyLine(self): + x = self._polyx + y = self._polyy + if len(x) >= 2 and len(y) >= 2: + plt.plot(x[-2:], y[-2:], 'k') + + def drawLastPolyLine(self): + x = self._polyx + y = self._polyy + if len(x) >= 2 and len(y) >= 2: + plt.plot((x[-1], x[0]), (y[-1], y[0]), 'k') + + def finishPolygon(self): + self.drawLastPolyLine() + x = self._polyx + y = self._polyy + self._polyx = []; self._polyy = [] + + key = self.getKey() + self.markPolygon(x, y, key = key) + + shots, numtraces = self.findTracesInPoly(x, y) self.shots_found[key] = {'shots': shots, - 'distbin': (x0, x1), - 'pickbin': (y0, y1)} - self.markRegion((x0, x1), (y0, y1), key) - + 'selection': 'poly', + 'xvalues': x, + 'yvalues': y} + + print('Found %d traces in polygon: %s' %(numtraces, shots)) + + def markPolygon(self, x, y, key = None, color = 'grey', alpha = 0.1, linewidth = 1): + from matplotlib.patches import Polygon + poly = Polygon(np.array(zip(x, y)), color = color, alpha = alpha, lw = linewidth) + self.ax.add_patch(poly) + if key is not None: + self.ax.text((min(x) + (max(x) - min(x)) / 2), (min(y) + (max(y) - min(y)) / 2), str(key)) + self.drawFigure() + + def disconnectPoly(self): + self.ax.figure.canvas.mpl_disconnect(self._cid) + del self._cid + self.finishPolygon() + self._lasso.disconnect_events() + print('disconnected poly selection\n') + + def disconnectRect(self): + self.ax.figure.canvas.mpl_disconnect(self._cid) + del self._cid + self._rectangle.disconnect_events() + print('disconnected rectangle selection\n') + def chooseRectangles(self): ''' Activates matplotlib widget RectangleSelector. ''' from matplotlib.widgets import RectangleSelector - print 'Select rectangle is active' - return RectangleSelector(self.ax, self._onselect) + print('Select rectangle is active') + self._cid = self.ax.figure.canvas.mpl_connect('button_press_event', self._onpress) + self._rectangle = RectangleSelector(self.ax, self._onselect_clicks) + return self._rectangle + def choosePolygon(self): + ''' + Activates matplotlib widget LassoSelector. + ''' + from matplotlib.widgets import LassoSelector + + print('Select polygon is active') + self._cid = self.ax.figure.canvas.mpl_connect('button_press_event', self._onpress) + self._lasso = LassoSelector(self.ax, self._onselect_verts) + return self._lasso + def deselectLastSelection(self): if self.shots_found.keys() == []: print('No selection found.') @@ -74,17 +159,23 @@ class regions(object): self.deselectSelection(key) def deselectSelection(self, key, color = 'green', alpha = 0.1): - try: - if color is not None: - self.markRegion(self.shots_found[key]['distbin'], - self.shots_found[key]['pickbin'], - key = key, color = color, alpha = alpha, linewidth = 0) - value = self.shots_found.pop(key) - print('Deselected selection number %d'% key) - return - except: + if not key in self.shots_found.keys(): print('No selection found.') return + if color is not None: + if self.shots_found[key]['selection'] == 'rect': + self.markRectangle(self.shots_found[key]['xvalues'], + self.shots_found[key]['yvalues'], + key = key, color = color, alpha = alpha, + linewidth = 1) + elif self.shots_found[key]['selection'] == 'poly': + self.markPolygon(self.shots_found[key]['xvalues'], + self.shots_found[key]['yvalues'], + key = key, color = color, alpha = alpha, + linewidth = 1) + value = self.shots_found.pop(key) + print('Deselected selection number %d'% key) + return def _generateList(self): allpicks = [] @@ -101,7 +192,53 @@ class regions(object): def getShotsForDeletion(self): return self.shots_for_deletion - def findTracesInShotDict(self, (x0, x1), (y0, y1), picks = 'normal'): + def findTracesInPoly(self, x, y, picks = 'normal', highlight = True): + def dotproduct(v1, v2): + return sum((a*b) for a, b in zip(v1, v2)) + + def getlength(v): + return math.sqrt(dotproduct(v, v)) + + def getangle(v1, v2): + return np.rad2deg(math.acos(dotproduct(v1, v2) / (getlength(v1) * getlength(v2)))) + + def insidePoly(x, y, pickX, pickY): + angle = 0 + epsilon = 10e-8 + for index in range(len(x)): + xval1 = x[index - 1]; yval1 = y[index - 1] + xval2 = x[index]; yval2 = y[index] + angle += getangle([xval1 - pickX, yval1 - pickY], [xval2 - pickX, yval2 - pickY]) + if 360 - epsilon <= angle <= 360 + epsilon: ### IMPROVE THAT?? + return True + + if len(x) == 0 or len(y) == 0: + print('No polygon defined.') + return + + shots_found = {}; numtraces = 0 + x0 = min(x); x1 = max(x) + y0 = min(y); y1 = max(y) + + shots, numtracesrect = self.findTracesInShotDict((x0, x1), (y0, y1), highlight = False) + for shotnumber in shots.keys(): + shot = self.shot_dict[shotnumber] + for traceID in shots[shotnumber]: + if shot.getFlag(traceID) is not 0: + pickX = shot.getDistance(traceID) + pickY = shot.getPick(traceID) + if insidePoly(x, y, pickX, pickY): + if not shotnumber in shots_found.keys(): + shots_found[shotnumber] = [] + shots_found[shotnumber].append(traceID) + if highlight == True: + self.highlightPick(shot, traceID) + numtraces += 1 + + self.drawFigure() + return shots_found, numtraces + + def findTracesInShotDict(self, (x0, x1), (y0, y1), picks = 'normal', highlight = True): ''' Returns traces corresponding to a certain area in the plot with all picks over the distances. ''' @@ -116,10 +253,12 @@ class regions(object): if not shotnumber in shots_found.keys(): shots_found[shotnumber] = [] shots_found[shotnumber].append(traceID) + if highlight == True: + self.highlightPick(self.shot_dict[shotnumber], traceID) numtraces += 1 - print('Found %d traces: %s' %(numtraces, shots_found)) - return shots_found + self.drawFigure() + return shots_found, numtraces def highlightPick(self, shot, traceID, annotations = True): ''' @@ -197,11 +336,15 @@ class regions(object): def markAllActiveRegions(self): for key in self.shots_found.keys(): - self.markRegion(self.shots_found[key]['distbin'], - self.shots_found[key]['pickbin'], key = key) + if self.shots_found[key]['selection'] == 'rect': + self.markRectangle(self.shots_found[key]['xvalues'], + self.shots_found[key]['yvalues'], key = key) + if self.shots_found[key]['selection'] == 'poly': + self.markPolygon(self.shots_found[key]['xvalues'], + self.shots_found[key]['yvalues'], key = key) - def markRegion(self, (x0, x1), (y0, y1), key = None, color = 'grey', alpha = 0.1, linewidth = 0.1): + def markRectangle(self, (x0, x1), (y0, y1), key = None, color = 'grey', alpha = 0.1, linewidth = 1): ''' Mark a rectangular region on the axes. '''