RE: [Matplotlib-users] sending plot output to a bitmap widget

[Perry G. <pe...@st...>]

> >>>>> "Flavio" == Flavio Codeco Coelho <fcc...@fi...> writes:
> 
>     Flavio> Hi, Is there a way to get the output of a plot (the
>     Flavio> bitmap) and assign it to a bitmap object such as wxBitmap
>     Flavio> or wxImage?  I know how to do this by saving the figure
>     Flavio> and loading it to wxBitmap.  But there must be a way to do
>     Flavio> it directly. Does anyone know how to do this?
> 
> Using the OO FigureCanvasWxAgg API, which I think you are using, you
> already have the canvas instance.  The call to canvas.draw() sets the
> bitmap instance, which you can access as canvas.bitmap.  So after any
> draw command canvas.bitmap is updated.
> 
> You can take a look at
> matplotlib.backends.backend_wxagg.FigureCanvasWxAgg.draw to see how
> the backend is using agg to render, create a wxImage and wxBitmap.
> You can either use the result of these calls (canvas.bitmap) or just
> make them yourself in another part of your code.
> 
> JDH
> 
But it does make sense to have a general function to read out an
AGG rendered buffer to a Numeric/numarray array doesn't it? Seems
like another good thing to add to the list (unless one can do
that already, I forget the details of using AGG by itself).

Perry