matplotlib-users Mailing List for matplotlib

Hello'all -

I am trying to develop my own toolbar and thought the easiest way to do thi=
s=20
was to define a new backend and change it in that file.
Matplotlib includes the 'template' backend as a start.
To get going, I copied the entire TkAgg backend into the template backend=
=20
and set the backend to 'Template' in the matplotlibrc file.
But now when I run pylab, it doesn't work interactivly anymore.
When I just give a plot([1,2,3]), it draws the figure window but not the=20
figure.
draw_if_interactive() doesn't work either, even though interactive is set t=
o=20
True.
draw() does work and creates the correct figure.
Is Tk special ? I thought this should work.

Any help appreciated.

Thanks,

Mark

Dear all,

I have two suggestions about toolbar customization:

1. In the 'matplotlibrc' file the toolbar line should be changed in 
order to include a "custom toolbar"

toolbar      : toolbar2   # None | classic | toolbar2 | custom

2. In the 'backend_tkagg.py file', inside the 'NavigationToolbar2TkAgg 
class' the
    save_figure procedure should be changed to somewhat:

    def save_figure(self):
        from tkFileDialog import asksaveasfilename
        fname = asksaveasfilename(master=self.window,
                                  title='Save the figure',
                                  filetypes=[('Encapsulated Postscript 
File','*.eps'),
                                             ('Scalable Vector 
Graphics','*.svg'),
                                             ('Portable Network 
Graphics','*.png')])
#                                  initialfile=InitialFilename)
        if fname == "" :
            return
        else:
            bname, fext = os.path.splitext(fname)
            if (fext.lower()=='.png'):
                self.canvas.print_figure(fname, dpi=300)
            elif (fext.lower()=='.eps'):
                self.canvas.print_figure(fname)
            elif (fext.lower()=='.svg'):
                self.canvas.print_figure(fname)

    I think that the asksaveasfilename function provided  by 
tkFileDialog is "better"

3. In the code above there are three problems that I don't know how to 
solve (I am a Python newbie):
a) this solves only one backend...
b) I would like to provide the 'asksaveasfilename' an InitialFilename, 
such as in the commented line.
c) It would be much better to make my customizations by defining a 
"custom toolbar" instead of
tweaking the original one...

Thanks,
Clovis Goldemberg

On Wed, Aug 03, 2005 at 05:33:35PM -0500, John Hunter wrote:
> For something like zunzun, a web app server, I suggest not using pylab
> at all, but the matplotlib API, which avoids all the magical things
> that pylab does that can just be a pain in an app server.
>   http://matplotlib.sf.net/faq.html#OO
> See for example
>   http://matplotlib.sf.net/examples/agg_oo.py
> Let me know if this helps.

Matplotlib newbie that I am, *anything* will doubtless
be of help.  Thank you for the references.


>  zunzun is amazing!!

One day when I win the lottery and have money for
a serious server, it will really kick some major
mathematical tail.  Until then it remains a hobby,
albeit with matplotlib a much prettier one.

     James Phillips
     http://zunzun.com