Thanks for the hint, I now have:
#figure is a matplotlib Figure
#bitmap is a wx.StaticBitmap
w_figure, h_figure = figure.get_size_inches()
w_bitmap, h_bitmap = bitmap.GetSize()
dpi = int(min(w_bitmap/w_figure,h_bitmap/h_figure))
figure.set_dpi(dpi)
figure.canvas.draw()
w_canvas, h_canvas = figure.canvas.get_width_height()
buffer = figure.canvas.tostring_rgb()
bmp = wx.BitmapFromBuffer(w_canvas, h_canvas, buffer)
bitmap.SetBitmap(bmp)
The size and dpi lines are meant to get a proper sizing of the canvas before
making a bitmap. This because I assume that the draw() converts vector
graphics to raster graphics. I am not sure all this is the cleverest way
but, when called from a wx.EVT_SIZE event it resizes nicely be it somewhat
slow.
Janwillem wrote:
>
> I have an application where I would like to use show in a loop but as
> stated in 18.1 of the manual that does not work.
> # WARNING : illustrating how NOT to use show
> for i in range(10):
> # make figure i
> show()
> So I made a workaround in a custom wxDialog with a wxStaticBitmap and a
> few buttons and put the matplotlib figure in the bitmap with something
> like:
> wi,hi = figure.get_size_inches()
> width,height = bitmap_plot.GetSize()
> dpi = int(min(width/wi,height/hi))
> figure.savefig('/tmp/tmp.png',dpi = dpi)
> image = wx.Image('/tmp/tmp.png',wx.BITMAP_TYPE_ANY)
> bitmap = wx.BitmapFromImage(image)
> bitmap_plot.SetBitmap(bitmap)
> Thus scaling the figure using the dpi option of savefig and then loading
> it into the wxStaticBitmap.
>
> To me it seems there might be a lot of unnecessary data handling. What is
> the clever solution?
> mant thanks
>
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