Re: [Matplotlib-users] trouble switching off smoothing in imshow()

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

On 2012/10/10 3:07 AM, Anand Sivaramakrishnan wrote:
> Thanks for the many useful responses - I eventuallyfound by experiment
> that imshow(  interpolation='nearest' works *if* I write a png file.
> Saving a pdf file mushed up my crisp pixel boundaries.  However, saving
> as png, then using (mac osx) preview to convert to pdf worked fine.
> Go figure()!

This doesn't seem right to me, that pdf would be "mushed".  Would you 
supply an example, please?  Ideally a simple script with the png result 
and the mpl pdf result?

Eric

>
>>
>>
>>     I have solved this problem earlier using figimage(), but that was
>>     a lot of work (I had to create a pixel-by-pixel array with all
>>     greyscale values set myself, and then I was working in pixel
>>     coordinates rather than my data coordinates).  Has anyone figured
>>     out how to get imshow to stop smoothing the image?  Using imshow(…
>>     interpolation='none'…) or imshow(… interpolation=None…) raise
>>     exceptions.
>>
>>     I found NonUniformImage too hard to figure out from the documentation.
>>
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