matplotlib-users

[Matplotlib-users] Contours and imshow plots have offset

[Christian L. <li...@pe...>]

Hi,
when I plot 2D data with imshow() and then add a contour plot, my
contours have an offset in relation to the data. At the same time there
is white space at the edge of my plot, so I assume that it is the
imshow plot that actually gets shifted. I'm new to Python and
matplotlib, so I don't really understand that. Can anybody give me a
hint about how to get rid of this offset?

Cheers,
Christian

Re: [Matplotlib-users] Contours and imshow plots have offset

[Eric F. <ef...@ha...>]

Christian Lerrahn wrote:
> Hi,
> when I plot 2D data with imshow() and then add a contour plot, my
> contours have an offset in relation to the data. At the same time there
> is white space at the edge of my plot, so I assume that it is the
> imshow plot that actually gets shifted. I'm new to Python and
> matplotlib, so I don't really understand that. Can anybody give me a
> hint about how to get rid of this offset?

In the examples subdirectory of the mpl distribution, see contour_image.py.

Eric

Re: [Matplotlib-users] Contours and imshow plots have offset

[Christian L. <li...@pe...>]

On Thu, 18 Oct 2007 21:10:24 -1000
Eric Firing <ef...@ha...> wrote:

> Christian Lerrahn wrote:
> > Hi,
> > when I plot 2D data with imshow() and then add a contour plot, my
> > contours have an offset in relation to the data. At the same time
> > there is white space at the edge of my plot, so I assume that it is
> > the imshow plot that actually gets shifted. I'm new to Python and
> > matplotlib, so I don't really understand that. Can anybody give me a
> > hint about how to get rid of this offset?
> 
> In the examples subdirectory of the mpl distribution, see
> contour_image.py.

Thanks. With the example and a bit of try and error, I now got it to
work. :)

Cheers,
Christian