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    <p>Unless you really need the marker ticks and such,</p> <pre><code>im._rgba_cache </code></pre> <p>gives you direct access to the MxNx4 <code>numpy</code> array that is the color mapped data.</p> <p>If you just want the color mapped data, you can by pass <code>imshow</code> entirely and directly color-map the data your self (see <a href="http://matplotlib.org/users/colormaps.html" rel="nofollow noreferrer">guide</a> for picking your color map)</p> <pre><code>my_cm = maplotlib.cm.get_cmap('Reds') normed_data = (data - np.min(data)) / (np.max(data) - np.min(data)) mapped_data = my_cm(normed_data) </code></pre> <p>which will give you back a MxNx4 array mapped between <code>0</code> and <code>1</code>, </p> <pre><code>mapped_datau8 = (255 * my_cm(normed_data)).astype('uint8') </code></pre> <p>or</p> <pre><code>mapped_data = my_cm(normed_data, bytes=True) </code></pre> <p>will convert it to unsigned ints.</p> <p><code>matplotlib</code> includes a range of normalization code, <a href="http://matplotlib.org/api/colors_api.html?highlight=lognorm#matplotlib.colors.Normalize" rel="nofollow noreferrer">see here</a>.</p> <p><a href="http://matplotlib.org/api/cm_api.html#matplotlib.cm.get_cmap" rel="nofollow noreferrer"><code>get_cmap</code> doc</a> and <a href="http://www.loria.fr/~rougier/teaching/matplotlib/#colormaps" rel="nofollow noreferrer">colormap gallery</a></p> <p>edit: fixed oversight pointed out at <a href="https://stackoverflow.com/a/14880947/380231">https://stackoverflow.com/a/14880947/380231</a></p>
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    1. POIs there a way to convert pyplot.imshow() object to numpy array?
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    1. POIs there a way to convert pyplot.imshow() object to numpy array?
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    1. COWow, your solution preserves the original image dimensions which was my next question. thank you very much. And I am not getting any runtime error too.
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    2. COBy the way, its `my_cm = matplotlib.cm.get_cmap('jet')`. And is there any specific purpose for passing `'jet'` in `'my_cm = matplotlib.cm.get_cmap('jet')'` ? I ask because I am getting same output without passing.
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    3. COif you want to use a different color map ex, `get_cmap('jet_r')` you can call them by name. You get the same thing because if you do not pass an argument it returns the default (which unless you have changed it is `'jet'`).
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