Re: [Matplotlib-users] advice on writing an application

[Ken M. <mc...@ii...>]

On 12/01/05 04:43, massimo sandal wrote:
> Ken:
>  >An embedding library will give you those features, plus ones which 
>  >pylab does not (e.g. printing support, selecting points and regions).
> 
> Ok. What I wanted to know is if in pylab there were hard-coded features 
> that the MPL OO interface has not, or if these features were already 
> present in MPL but simply had to be called and merged together by the 
> user (don't know if I'm being clear here - anyway you seem to point it's 
> the second, happier case).

I think I understand the question now.  I thought you were worried about 
interactive plotting features, but I now believe you're asking about plotting 
in general (please correct me if I'm wrong!).

In terms of plotting, etc, I can't think of anything that pylab can do that 
you can't do using the OO API.  You sometimes have to do a bit more work 
(because pylab manages a lot of details for you), but I haven't ran into any 
major problems.  Of course, I'm using about one tenth of matplotlib's 
capabilities in my day-to-day work (plot(), imshow(), pcolor()), so you're 
milage may vary slightly.  :-)

>  >On using matplotlib bindings and the Navigator toolbars, I'd guess you
>  >don't want to do this.  The toolbars are ugly, take up screen real
>  >estate, do stuff you don't need and don't do stuff you do need.
> 
> I agree toolbars are not essential, but they're nice IMHO. I don't 
> strictly need them, except for the panning and zooming tools. Hope 
> they're not hard to reproduce, should I have a look at the pylab code?).

Here are the toolbar classes:
WX backend    -- matplotlib.backends.backend_wx.NavigationToolbar2Wx
WXAgg backend -- matplotlib.backends.backend_wxagg.NavigationToolbar2WxAgg

NavigationToolbar2WxAgg just overrides the "get_canvas(fig, frame)" method to 
return a FigureCanavsWXAgg, so you'll want to look at NavigationToolbar2Wx if 
you're interested in how it works.

The following files in the "examples/" subdirectory of the source distribution 
make use of a WX toolbar.  They should help you get started, if you choose to 
go that route.

	dynamic_demo_wx.py
	dynamic_image_wxagg2.py
	embedding_in_wx2.py
	embedding_in_wx4.py
	wxcursor_demo.py

Ken