OK, was able to narrow thinks down:
actually it looks like
figure.canvas.mpl_connect('pick_event', function)
does not connect the "function" if it is a class method (...?)
In attachment you will find two files illustrating this:
buggy_pick.py and buggy_pick2.py
Both work nicely with matplotlib 0.93
With matplotlib 1.0 buggy_pick.py does not work while buggy_pick2.py
does work.
The only difference is in the PickFig class...
Is it really a bug or I'm doing something wrong ?
Any workaround would be welcome.
Thx,
David
PS. Is it better to discuss this on users or devel list ?
Le 23/09/10 14:20, David Trémouilles a écrit :
Hello,
My pyqt4 app use the matplotlib pick event.
Cliking on a point in the graph triggers an event
but with matplotlib 1.0 it does not work anymore
while it was working fine with 0.93.
(Matplotlib version is only what was changed)
Any one who might be aware of a matplotlib change that could have
induce that issue ?
Any idea/help on where I should look for and how to fix this?
Thanks in advance,
David
import matplotlib
matplotlib.use('Qt4Agg')
import numpy as np
import sys
from PyQt4 import QtCore
from PyQt4 import QtGui
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg
from matplotlib.backends.backend_qt4agg import NavigationToolbar2QTAgg as NavigationToolbar
class MatplotlibFig(QtGui.QWidget):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self)
figure = Figure()
fig_canvas = FigureCanvasQTAgg(figure)
fig_toolbar = NavigationToolbar(fig_canvas, self)
fig_vbox = QtGui.QVBoxLayout()
fig_vbox.addWidget(fig_canvas)
fig_vbox.addWidget(fig_toolbar)
fig_canvas.setParent(self)
self.setLayout(fig_vbox)
self.figure = figure
class PickFig(object):
def __init__(self, fig):
x = np.arange(10)
y = np.exp(x)
ax1 = fig.add_subplot(111)
selected_flag = np.zeros(x.shape[0],dtype=np.bool)
ax1.plot(x, y)
line, = ax1.plot(x, y, 'o', picker=5)
selected_point, = ax1.plot(x[selected_flag], y[selected_flag], 'ro')
self.ax1 = ax1
self.x = x
self.y = y
self.fig = fig
self.selected_flag = selected_flag
self.selected_point = selected_point
fig.canvas.mpl_connect('pick_event', self.onpick3)
Fig.canvas.draw()
def onpick3(self, event):
print event
if event.mouseevent.button == 1:
self.ax1.set_autoscale_on(False)
ind = event.ind
self.selected_flag[ind] = not self.selected_flag[ind]
print self.x[self.selected_flag]
print 'onpick3 scatter:', ind, np.take(self.x, ind), np.take(self.y, ind)
self.selected_point.set_data(self.x[self.selected_flag],
self.y[self.selected_flag])
self.fig.canvas.draw()
class TestFig(MatplotlibFig):
def __init__(self, parent=None):
MatplotlibFig.__init__(self, parent)
PickFig(self.figure)
class MainWin(QtGui.QMainWindow):
def __init__(self, parent=None):
QtGui.QMainWindow.__init__(self, parent)
self.setWindowTitle("Test")
mat_fig = TestFig(self)
self.setCentralWidget(mat_fig)
def main():
app = QtGui.QApplication(sys.argv)
mainwin = MainWin()
mainwin.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
import matplotlib
matplotlib.use('Qt4Agg')
import numpy as np
import sys
from PyQt4 import QtCore
from PyQt4 import QtGui
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg
from matplotlib.backends.backend_qt4agg import NavigationToolbar2QTAgg as NavigationToolbar
class MatplotlibFig(QtGui.QWidget):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self)
figure = Figure()
fig_canvas = FigureCanvasQTAgg(figure)
fig_toolbar = NavigationToolbar(fig_canvas, self)
fig_vbox = QtGui.QVBoxLayout()
fig_vbox.addWidget(fig_canvas)
fig_vbox.addWidget(fig_toolbar)
fig_canvas.setParent(self)
self.setLayout(fig_vbox)
self.figure = figure
class PickFig(object):
def __init__(self, fig):
x = np.arange(10)
y = np.exp(x)
ax1 = fig.add_subplot(111)
selected_flag = np.zeros(x.shape[0],dtype=np.bool)
ax1.plot(x, y)
line, = ax1.plot(x, y, 'o', picker=5)
selected_point, = ax1.plot(x[selected_flag], y[selected_flag], 'ro')
def onpick3(event):
print event
if event.mouseevent.button == 1:
ax1.set_autoscale_on(False)
ind = event.ind
selected_flag[ind] = not selected_flag[ind]
print x[selected_flag]
print 'onpick3 scatter:', ind, np.take(x, ind), np.take(y, ind)
selected_point.set_data(x[selected_flag],
y[selected_flag])
fig.canvas.draw()
fig.canvas.mpl_connect('pick_event', onpick3)
fig.canvas.draw()
class TestFig(MatplotlibFig):
def __init__(self, parent=None):
MatplotlibFig.__init__(self, parent)
PickFig(self.figure)
class MainWin(QtGui.QMainWindow):
def __init__(self, parent=None):
QtGui.QMainWindow.__init__(self, parent)
self.setWindowTitle("Test")
mat_fig = TestFig(self)
self.setCentralWidget(mat_fig)
def main():
app = QtGui.QApplication(sys.argv)
mainwin = MainWin()
mainwin.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
------------------------------------------------------------------------------
Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for consumers in U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
http://p.sf.net/sfu/nokia-dev2dev
_______________________________________________
Matplotlib-devel mailing list
Matplotlib-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
