[Matplotlib-users] Fw: canvas.print_figure printing a variable amount of my figure

[David G. <d_l...@ya...>]

I sent the below - with referenced attachments - about 24 hours ago and have yet to see it posted - was it blocked due to the attachments?

DG
--- On Mon, 9/29/08, David Goldsmith <d_l...@ya...> wrote:

> From: David Goldsmith <d_l...@ya...>
> Subject: canvas.print_figure printing a variable amount of my figure
> To: mat...@li...
> Date: Monday, September 29, 2008, 5:59 PM
> I feel like I must be missing something: below is some
> "minimal sample" code which reproduces a
> "problem" I'm seeing in a more complicated
> situation:
> 
> import matplotlib as MPL
> from matplotlib.backends.backend_agg import FigureCanvasAgg
> as FigureCanvas
> from matplotlib.figure import Figure
> 
> for DPI in range(100,201,25):
>     fig = Figure(figsize=(12,9), 
>                  dpi=DPI, 
>                  frameon=False)
>     canvas = FigureCanvas(fig)
> 
>     nx, ny = (N.uint16(12*DPI), N.uint16(9*DPI))
>     temp = N.indices((ny, nx), N.uint8)
>     result = N.zeros_like(temp[0])
>     result[:ny/2,:] = temp[0,:ny/2,:] + temp[1,:ny/2,:]
>     result[ny/2:,:] = temp[0,ny/2:,:] - temp[1,ny/2:,:]
>     fig.figimage(result/N.float(N.max(result)))
>    
> canvas.print_figure("test"+str(DPI)+"dpi.png")
> 
> Attached are the results on my computer (see usage details
> below).  Granted, I'm increasing the resolution each
> iteration, but I'm always placing the "cut" in
> the figure half way through - why does the cut keep creeping
> up 'til it disappears?
> 
> Usage details: matplotlib version=? (I forget how to get
> that), numpy version = 1.0.4, Python version = 2.5.2, OS =
> Windows XPProSP3, 504 MB RAM w/ "Physical Address
> Extension" (whatever that means).
> 
> DG
> 
> PS: If the figures don't come through and for some
> reason my code doesn't work on your platform or
> doesn't reproduce the problem, email me and I'll
> email you the figures directly.