[Matplotlib-users] Mouse event blocked in 1.0 but works with 0.93 ?
Hello, I've just updated matplotlib to 1.0 svn version from 0.93. My pyqt4 app use the pick event. Cliking on a point in the graph triggers an event but with matplotlib 1.0 it does not anymore while it was working fine with 0.93. Any idea/help on where I should look for ? Thanks in advance, David -- Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Mouse event blocked in 1.0 but works with 0.93 ?
Hi David, I'm using the pick event in wx (matplotlib 1.0) without any issues. Could you please post some sample code? Have you tried to see if legend.draggable() works? If so, the pick event is likely not an issue. -Aman On Thu, Sep 23, 2010 at 4:20 AM, David Trémouilles david.t...@gmail.comwrote: Hello, I've just updated matplotlib to 1.0 svn version from 0.93. My pyqt4 app use the pick event. Cliking on a point in the graph triggers an event but with matplotlib 1.0 it does not anymore while it was working fine with 0.93. Any idea/help on where I should look for ? Thanks in advance, David -- Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Mouse event blocked in 1.0 but works with 0.93 ?
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 15:42, Ryan May a écrit :
On Thu, Sep 23, 2010 at 3:20 AM, David Trémouillesdavid.t...@gmail.com wrote:
Hello,
I've just updated matplotlib to 1.0 svn version from 0.93.
My pyqt4 app use the pick event. Cliking on a point in the graph
triggers an event but with matplotlib 1.0 it does not anymore while
it was working fine with 0.93.
Any idea/help on where I should look for ?
Not without a better idea of what you're doing. I *can* say that both
picking examples work fine for me with the Qt4Agg backend. Can you
create a complete, minimal example that replicates the problem you're
seeing? Without that, I'd just be guessing blindly.
Ryan
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
Re: [Matplotlib-users] Mouse event blocked in 1.0 but works with 0.93 ?
On Thu, Sep 23, 2010 at 9:16 AM, David Trémouilles david.t...@gmail.com wrote:
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.
Technically, you're doing something sort of wrong, though it's very
subtle. And it just so happens that the way the code for callbacks was
reworked that this even showed up.
In this code:
class TestFig(MatplotlibFig):
def __init__(self, parent=None):
MatplotlibFig.__init__(self, parent)
PickFig(self.figure)
You create a PickFig, but since you don't assign it to anything, it
gets garbage collected and (eventually) removed from the callbacks.
Previously, the callback registry would have a reference to the
callbacks, which would have kept PickFig alive. This was changed to
eliminate some resource leaks. The fix is simple, just save the
PickFig as a member of TestFig:
self.pf = PickFig(self.figure)
That fixes the problem for me.
Ryan
--
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma
--
Nokia and ATT 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
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Re: [Matplotlib-users] Mouse event blocked in 1.0 but works with 0.93 ? (Solved)
Wonderful !
This does indeed solve my issue.
Many many thanks,
David
Le 23/09/10 17:35, Ryan May a écrit :
On Thu, Sep 23, 2010 at 9:16 AM, David Trémouillesdavid.t...@gmail.com
wrote:
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.
Technically, you're doing something sort of wrong, though it's very
subtle. And it just so happens that the way the code for callbacks was
reworked that this even showed up.
In this code:
class TestFig(MatplotlibFig):
def __init__(self, parent=None):
MatplotlibFig.__init__(self, parent)
PickFig(self.figure)
You create a PickFig, but since you don't assign it to anything, it
gets garbage collected and (eventually) removed from the callbacks.
Previously, the callback registry would have a reference to the
callbacks, which would have kept PickFig alive. This was changed to
eliminate some resource leaks. The fix is simple, just save the
PickFig as a member of TestFig:
self.pf = PickFig(self.figure)
That fixes the problem for me.
Ryan
--
Nokia and ATT 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-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users
