example use with wxPython?

John_Hunter · November 21, 2003, 10:27pm

Hi, I am building a wxPython app, and would like to try

    > incorporating matplotlib, even though the wx backend is
    > reportedly in its development state. Could someone please
    > give a snippet of code using the wx backend? Also, do I need
    > pygtk even though I intend on using wxPython?

The matplotlib code you write is more or less backend independent
(same for gtk, wx, ps, etc..). You do not need pygtk. You just need
wxpython and Numeric - which are both included in the enthought
edition of python for win32, by the way; http://enthought.com/python.

If you just want to make some figure windows to explore the plotting
commands, you have 2 choices

  import matplotlib
  matplotlib.use('WX')
  from matplotlib.matlab import *
  plot([1,2,3])
  show()

or
  # myscript.py
  from matplotlib.matlab import *
  plot([1,2,3])
  show()

> python myscript.py -dWX

That is, you choose the wx backend either by doing 'use' or -dWX. See
http://matplotlib.sourceforge.net/backends.html for more info.

See the examples dir of the src distro for examples of how to make
plots more sophisticated than [1,2,3].

But I gather from your post that you want to see an example of
embedding the plot in an application. Jeremy, the wx backend
implemented, can probably help you more here. In the mean time, you
might want to look at the FigureManagerWX class in the file
matplotlib/backends/backend_wx.py to see how to embed a plot in a wx
frame.

I recommend you use the latest CVS, which has a number of improvements
over the 0.32 release. If you don't have CVS access, let me know and
I'll send you a snapshot (are you on windows).

John Hunter

John_Wohlbier · November 21, 2003, 11:18pm

Thanks, that worked for being able to generate the [1,2,3] plot
from within my application. Eventually I will want to embed
into a wxFrame, but for now I think this should suffice.

I'm actually on linux, and am using 0.32 for now. I will
get the latest CVS when I am up and running. When do you
expect to release the next version?

Thanks again,

jgw

···

    > Hi, I am building a wxPython app, and would like to try
    > incorporating matplotlib, even though the wx backend is
    > reportedly in its development state. Could someone please
> give a snippet of code using the wx backend? Also, do I need
> pygtk even though I intend on using wxPython?

The matplotlib code you write is more or less backend independent
(same for gtk, wx, ps, etc..). You do not need pygtk. You just need
wxpython and Numeric - which are both included in the enthought
edition of python for win32, by the way; http://enthought.com/python.

If you just want to make some figure windows to explore the plotting
commands, you have 2 choices

  import matplotlib
  matplotlib.use('WX')
  from matplotlib.matlab import *
  plot([1,2,3])
  show()

or
  # myscript.py
  from matplotlib.matlab import *
  plot([1,2,3])
  show()

> python myscript.py -dWX

That is, you choose the wx backend either by doing 'use' or -dWX. See
http://matplotlib.sourceforge.net/backends.html for more info.

See the examples dir of the src distro for examples of how to make plots
more sophisticated than [1,2,3].

But I gather from your post that you want to see an example of
embedding the plot in an application. Jeremy, the wx backend
implemented, can probably help you more here. In the mean time, you
might want to look at the FigureManagerWX class in the file
matplotlib/backends/backend_wx.py to see how to embed a plot in a wx
frame.

I recommend you use the latest CVS, which has a number of improvements
over the 0.32 release. If you don't have CVS access, let me know and
I'll send you a snapshot (are you on windows).

John Hunter

John_Wohlbier · November 21, 2003, 11:41pm

I ended up downloading the latest CVS using the command
cvs -z3 -d:pserver:anonymous@...54...:/cvsroot/matplotlib co
matplotlib

and doing python setup.py install

Now when I run my application (which worked with version 0.32) I get
this error on startup
Traceback (most recent call last):
  File "./mptwt.py", line 3, in ?
    from mp_win import *
  File "./mp_win.py", line 10, in ?
    from matplotlib.matlab import *
  File "/usr/lib/python2.2/site-packages/matplotlib/matlab.py", line 121,
in ?
    from axes import Subplot, Axes
  File "/usr/lib/python2.2/site-packages/matplotlib/axes.py", line 118, in ?
    import backends
  File "/usr/lib/python2.2/site-packages/matplotlib/backends/__init__.py",
line 21, in ?
    from backend_wx import AxisText, Figure, FigureManager, Gcf, \
  File
"/usr/lib/python2.2/site-packages/matplotlib/backends/backend_wx.py",
line 164, in ?
    from matplotlib._matlab_helpers import FigureManagerBase, GcfBase
ImportError: cannot import name FigureManagerBase

Am I doing something wrong? I guess I'll go back to version 0.32
for a while.

By the way, when I run the python setup.py install command will
the script properly overwrite the existing version of the matplotlib
library, or should I go in and delete the old library first?

Thanks!

jgw

···

    > Hi, I am building a wxPython app, and would like to try
    > incorporating matplotlib, even though the wx backend is
    > reportedly in its development state. Could someone please
> give a snippet of code using the wx backend? Also, do I need
> pygtk even though I intend on using wxPython?

The matplotlib code you write is more or less backend independent
(same for gtk, wx, ps, etc..). You do not need pygtk. You just need
wxpython and Numeric - which are both included in the enthought
edition of python for win32, by the way; http://enthought.com/python.

If you just want to make some figure windows to explore the plotting
commands, you have 2 choices

  import matplotlib
  matplotlib.use('WX')
  from matplotlib.matlab import *
  plot([1,2,3])
  show()

or
  # myscript.py
  from matplotlib.matlab import *
  plot([1,2,3])
  show()

> python myscript.py -dWX

That is, you choose the wx backend either by doing 'use' or -dWX. See
http://matplotlib.sourceforge.net/backends.html for more info.

See the examples dir of the src distro for examples of how to make plots
more sophisticated than [1,2,3].

But I gather from your post that you want to see an example of
embedding the plot in an application. Jeremy, the wx backend
implemented, can probably help you more here. In the mean time, you
might want to look at the FigureManagerWX class in the file
matplotlib/backends/backend_wx.py to see how to embed a plot in a wx
frame.

I recommend you use the latest CVS, which has a number of improvements
over the 0.32 release. If you don't have CVS access, let me know and
I'll send you a snapshot (are you on windows).

John Hunter