added polygon selection!!
This commit is contained in:
Marcel Paffrath
parent
07395802b7
commit
d78b0f1cff
@ -1,4 +1,6 @@
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import matplotlib.pyplot as plt
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import math
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import numpy as np
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plt.interactive(True)
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class regions(object):
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@ -31,12 +33,14 @@ class regions(object):
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self._y0 = []
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self._x1 = []
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self._y1 = []
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self._polyx = []
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self._polyy = []
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self._allpicks = None
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self.shots_found = {}
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self.shots_for_deletion = {}
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self._generateList()
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def _onselect(self, eclick, erelease):
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def _onselect_clicks(self, eclick, erelease):
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'eclick and erelease are matplotlib events at press and release'
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#print ' startposition : (%f, %f)' % (eclick.xdata, eclick.ydata)
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#print ' endposition : (%f, %f)' % (erelease.xdata, erelease.ydata)
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@ -46,16 +50,84 @@ class regions(object):
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y0 = min(eclick.ydata, erelease.ydata)
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y1 = max(eclick.ydata, erelease.ydata)
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shots = self.findTracesInShotDict((x0, x1), (y0, y1))
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shots, numtraces = self.findTracesInShotDict((x0, x1), (y0, y1))
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print('Found %d traces in rectangle: %s' %(numtraces, shots))
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key = self.getKey()
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self.shots_found[key] = {'shots': shots,
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'selection': 'rect',
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'xvalues': (x0, x1),
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'yvalues': (y0, y1)}
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self.markRectangle((x0, x1), (y0, y1), key)
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def _onselect_verts(self, verts):
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x = verts[0][0]
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y = verts[0][1]
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self._polyx.append(x)
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self._polyy.append(y)
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self.drawPolyLine()
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def _onpress(self, event):
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if event.button == 3:
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self.disconnectPoly()
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def getKey(self):
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if self.shots_found.keys() == []:
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key = 1
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else:
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key = max(self.shots_found.keys()) + 1
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return key
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def drawPolyLine(self):
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x = self._polyx
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y = self._polyy
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if len(x) >= 2 and len(y) >= 2:
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plt.plot(x[-2:], y[-2:], 'k')
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def drawLastPolyLine(self):
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x = self._polyx
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y = self._polyy
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if len(x) >= 2 and len(y) >= 2:
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plt.plot((x[-1], x[0]), (y[-1], y[0]), 'k')
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def finishPolygon(self):
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self.drawLastPolyLine()
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x = self._polyx
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y = self._polyy
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self._polyx = []; self._polyy = []
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key = self.getKey()
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self.markPolygon(x, y, key = key)
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shots, numtraces = self.findTracesInPoly(x, y)
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self.shots_found[key] = {'shots': shots,
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'distbin': (x0, x1),
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'pickbin': (y0, y1)}
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self.markRegion((x0, x1), (y0, y1), key)
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'selection': 'poly',
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'xvalues': x,
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'yvalues': y}
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print('Found %d traces in polygon: %s' %(numtraces, shots))
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def markPolygon(self, x, y, key = None, color = 'grey', alpha = 0.1, linewidth = 1):
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from matplotlib.patches import Polygon
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poly = Polygon(np.array(zip(x, y)), color = color, alpha = alpha, lw = linewidth)
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self.ax.add_patch(poly)
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if key is not None:
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self.ax.text((min(x) + (max(x) - min(x)) / 2), (min(y) + (max(y) - min(y)) / 2), str(key))
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self.drawFigure()
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def disconnectPoly(self):
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self.ax.figure.canvas.mpl_disconnect(self._cid)
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del self._cid
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self.finishPolygon()
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self._lasso.disconnect_events()
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print('disconnected poly selection\n')
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def disconnectRect(self):
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self.ax.figure.canvas.mpl_disconnect(self._cid)
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del self._cid
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self._rectangle.disconnect_events()
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print('disconnected rectangle selection\n')
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def chooseRectangles(self):
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'''
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@ -63,8 +135,21 @@ class regions(object):
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'''
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from matplotlib.widgets import RectangleSelector
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print 'Select rectangle is active'
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return RectangleSelector(self.ax, self._onselect)
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print('Select rectangle is active')
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self._cid = self.ax.figure.canvas.mpl_connect('button_press_event', self._onpress)
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self._rectangle = RectangleSelector(self.ax, self._onselect_clicks)
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return self._rectangle
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def choosePolygon(self):
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'''
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Activates matplotlib widget LassoSelector.
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'''
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from matplotlib.widgets import LassoSelector
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print('Select polygon is active')
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self._cid = self.ax.figure.canvas.mpl_connect('button_press_event', self._onpress)
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self._lasso = LassoSelector(self.ax, self._onselect_verts)
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return self._lasso
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def deselectLastSelection(self):
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if self.shots_found.keys() == []:
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@ -74,17 +159,23 @@ class regions(object):
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self.deselectSelection(key)
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def deselectSelection(self, key, color = 'green', alpha = 0.1):
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try:
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if not key in self.shots_found.keys():
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print('No selection found.')
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return
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if color is not None:
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self.markRegion(self.shots_found[key]['distbin'],
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self.shots_found[key]['pickbin'],
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key = key, color = color, alpha = alpha, linewidth = 0)
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if self.shots_found[key]['selection'] == 'rect':
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self.markRectangle(self.shots_found[key]['xvalues'],
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self.shots_found[key]['yvalues'],
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key = key, color = color, alpha = alpha,
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linewidth = 1)
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elif self.shots_found[key]['selection'] == 'poly':
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self.markPolygon(self.shots_found[key]['xvalues'],
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self.shots_found[key]['yvalues'],
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key = key, color = color, alpha = alpha,
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linewidth = 1)
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value = self.shots_found.pop(key)
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print('Deselected selection number %d'% key)
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return
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except:
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print('No selection found.')
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return
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def _generateList(self):
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allpicks = []
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@ -101,7 +192,53 @@ class regions(object):
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def getShotsForDeletion(self):
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return self.shots_for_deletion
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def findTracesInShotDict(self, (x0, x1), (y0, y1), picks = 'normal'):
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def findTracesInPoly(self, x, y, picks = 'normal', highlight = True):
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def dotproduct(v1, v2):
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return sum((a*b) for a, b in zip(v1, v2))
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def getlength(v):
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return math.sqrt(dotproduct(v, v))
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def getangle(v1, v2):
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return np.rad2deg(math.acos(dotproduct(v1, v2) / (getlength(v1) * getlength(v2))))
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def insidePoly(x, y, pickX, pickY):
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angle = 0
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epsilon = 10e-8
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for index in range(len(x)):
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xval1 = x[index - 1]; yval1 = y[index - 1]
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xval2 = x[index]; yval2 = y[index]
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angle += getangle([xval1 - pickX, yval1 - pickY], [xval2 - pickX, yval2 - pickY])
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if 360 - epsilon <= angle <= 360 + epsilon: ### IMPROVE THAT??
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return True
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if len(x) == 0 or len(y) == 0:
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print('No polygon defined.')
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return
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shots_found = {}; numtraces = 0
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x0 = min(x); x1 = max(x)
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y0 = min(y); y1 = max(y)
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shots, numtracesrect = self.findTracesInShotDict((x0, x1), (y0, y1), highlight = False)
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for shotnumber in shots.keys():
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shot = self.shot_dict[shotnumber]
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for traceID in shots[shotnumber]:
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if shot.getFlag(traceID) is not 0:
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pickX = shot.getDistance(traceID)
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pickY = shot.getPick(traceID)
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if insidePoly(x, y, pickX, pickY):
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if not shotnumber in shots_found.keys():
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shots_found[shotnumber] = []
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shots_found[shotnumber].append(traceID)
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if highlight == True:
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self.highlightPick(shot, traceID)
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numtraces += 1
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self.drawFigure()
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return shots_found, numtraces
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def findTracesInShotDict(self, (x0, x1), (y0, y1), picks = 'normal', highlight = True):
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'''
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Returns traces corresponding to a certain area in the plot with all picks over the distances.
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'''
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@ -116,10 +253,12 @@ class regions(object):
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if not shotnumber in shots_found.keys():
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shots_found[shotnumber] = []
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shots_found[shotnumber].append(traceID)
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if highlight == True:
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self.highlightPick(self.shot_dict[shotnumber], traceID)
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numtraces += 1
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print('Found %d traces: %s' %(numtraces, shots_found))
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return shots_found
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self.drawFigure()
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return shots_found, numtraces
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def highlightPick(self, shot, traceID, annotations = True):
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'''
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@ -197,11 +336,15 @@ class regions(object):
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def markAllActiveRegions(self):
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for key in self.shots_found.keys():
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self.markRegion(self.shots_found[key]['distbin'],
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self.shots_found[key]['pickbin'], key = key)
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if self.shots_found[key]['selection'] == 'rect':
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self.markRectangle(self.shots_found[key]['xvalues'],
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self.shots_found[key]['yvalues'], key = key)
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if self.shots_found[key]['selection'] == 'poly':
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self.markPolygon(self.shots_found[key]['xvalues'],
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self.shots_found[key]['yvalues'], key = key)
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def markRegion(self, (x0, x1), (y0, y1), key = None, color = 'grey', alpha = 0.1, linewidth = 0.1):
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def markRectangle(self, (x0, x1), (y0, y1), key = None, color = 'grey', alpha = 0.1, linewidth = 1):
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'''
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Mark a rectangular region on the axes.
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'''
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