[Matplotlib-users] Stopping FuncAnimation

2014-02-24 Thread Derek Pyne 
Does anyone know the preferred method for stopping FuncAnimation? I am using it 
to record data from a oscilloscope and woud like to be able to pause and 
restart the data on demand. Is there any way I can send a button click event to 
it?

Thanks, Derek

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[Matplotlib-users] change ylim xlim from canvas doesn't work

2014-02-24 Thread Gabriele Brambilla 
Hi,

when I try to change the ylim and xlim directly from the displayed canvas i
get this error(when  I change them in the code I have no problems):

Traceback (most recent call last):
  File "C:\Anaconda\lib\site-packages\matplotlib\backends\backend_qt4.py",
line
594, in edit_parameters
figureoptions.figure_edit(axes, self)
  File
"C:\Anaconda\lib\site-packages\matplotlib\backends\qt4_editor\figureoptio
ns.py", line 134, in figure_edit
icon=get_icon('qt4_editor_options.svg'), apply=apply_callback)
  File
"C:\Anaconda\lib\site-packages\matplotlib\backends\qt4_editor\formlayout.py",
line 544, in fedit
dialog = FormDialog(data, title, comment, icon, parent, apply)
  File
"C:\Anaconda\lib\site-packages\matplotlib\backends\qt4_editor\formlayout.py",
line 461, in __init__
self.formwidget.setup()
  File
"C:\Anaconda\lib\site-packages\matplotlib\backends\qt4_editor\formlayout.py",
line 433, in setup
widget.setup()
  File
"C:\Anaconda\lib\site-packages\matplotlib\backends\qt4_editor\formlayout.py",
line 408, in setup
widget.setup()
  File
"C:\Anaconda\lib\site-packages\matplotlib\backends\qt4_editor\formlayout.py",
line 302, in setup
field = ColorLayout(QColor(value), self)
TypeError: QVariant must be holding a QColor

my code is:
fig = plt.figure()
figf = plt.figure()

for el in sequence:
#some operations
ax = fig.add_subplot(111)

img = ax.plot(xflo, yflo, label=etich, marker = '.')
ax.set_yscale('log')
ax.set_xscale('log')
ax.legend(bbox_to_anchor=(1.05, 1), loc=4, borderaxespad=0.)
fig.canvas.draw()
ax1 = figf.add_subplot(111)

img1 = ax1.plot(logx, logy, label=etich)#, marker = style)
ax1.legend(bbox_to_anchor=(1.05, 1), loc=4, borderaxespad=0.)

figf.canvas.draw()

thanks

Gabriele
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[Matplotlib-users] path polygon direction?

2014-02-24 Thread Andres Luhamaa 
Hi
It has been reported in
http://matplotlib.1069221.n5.nabble.com/How-to-properly-use-path-Path-contains-point-td40718.htmlbut
I do not see anything has happened after this.
Following code illustrates the problem, when polygon defined in one
direction, I can check if point is inside it, if other direction, I can
not.

from matplotlib.patches import Polygon

poly1=Polygon([[0.,0.],[1.,0.],[1.,1.],[0.,1.]],facecolor='none')
print(poly1.contains_point([0.5,0.5]))

poly2=Polygon([[0.,0.],[0.,1.],[1.,1.],[1.,0.]],facecolor='none')
print(poly2.contains_point([0.5,0.5]))
print(poly2.contains_point([-0.5,-0.5]))

I do not see an obvious reason why polygons should be defined in one
direction only.

I have tried the code with several versions of matplotlib, newest is 1.3.1
with numpy 1.8 and python 3.2.3 and all newer versions do not work as I
would accept them. Only the oldest version, python2.6.6 with matplotlib
0.99.1.1 gives me correct answer.

I have digged in the source code and ended up in file _path.cpp where the
function point_in_path_impl seems to do the actual job, but understanding
it completely seems to take more time than I have at the moment.

Any feedback appreciated.

Andres
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