You can choose the kind of interpolation that gets used:
* interpolation is one of:
'nearest', 'bilinear', 'bicubic', 'spline16', 'spline36',
'hanning', 'hamming', 'hermite', 'kaiser', 'quadric',
'catrom', 'gaussian', 'bessel', 'mitchell', 'sinc',
'lanczos', 'blackman'
if interpolation is None, default to rc
image.interpolation. See also th the filternorm and
filterrad parameters
If you don't want interpolation at all, just solid filled squares, then
use interpolation='nearest'.
Eric
Christian Lerrahn wrote:
> Hi,
> I'm plotting some 2D grid data using imshow(). However, one of my test
> problems involves a Gaussian peak in the center of my grid. For some
> strange reason this Gaussian looks like 5 distinct peaks. It looks like
> the values are only set at the centers of my grid cells and then the
> colour gradients are interpolate from this central point and a
> background.
> You can have a look at the original plot and a magnified one at
>
> http://www.maths.monash.edu.au/~clerrahn/gaussian1.png
> http://www.maths.monash.edu.au/~clerrahn/gaussian2.png
>
> Cheers,
> Christian
>
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