Re: [Matplotlib-users] imshow without resampling

The problem with pcolor is that it draws all the pixels as polygons,  
which is very inefficient in terms of file size. For example,

import matplotlib
matplotlib.use('PS')
from matplotlib.pyplot import *

import numpy as np

image = np.random.random((100,100))

fig = figure(figsize=(4,4))
ax = fig.add_subplot(111)
ax.pcolor(image)
fig.savefig('plot.ps')

produces a 2Mb+ file.

Thanks,

Thomas



On Mar 31, 2009, at 4:32 PM, John Hunter wrote:

> On Tue, Mar 31, 2009 at 2:56 PM, Thomas Robitaille
> <tho...@gm...> wrote:
>> Hello,
>>
>> I am using matplotlib to create postscript and SVG files. I am
>> currently using imshow to show the contents of an array, but this
>> means that when saving vector graphics files, matplotlib resamples  
>> the
>> image/array onto a finer grid. What I would like, is for code such as
>> this:
>
>
> I believe pcolor will be closer to what you are looking for.7
>
> JDH