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    <p>The first link in Google for <code>'matplotlib figure size'</code> is <a href="http://www.scipy.org/Cookbook/Matplotlib/AdjustingImageSize" rel="noreferrer">AdjustingImageSize</a> (<a href="https://webcache.googleusercontent.com/search?q=cache:5oqjjm8c8UMJ:https://scipy.github.io/old-wiki/pages/Cookbook/Matplotlib/AdjustingImageSize.html+&amp;cd=2&amp;hl=en&amp;ct=clnk&amp;gl=fr" rel="noreferrer">Google cache of the page</a>).</p> <p>Here's a test script from the above page. It creates <code>test[1-3].png</code> files of different sizes of the same image:</p> <pre><code>#!/usr/bin/env python """ This is a small demo file that helps teach how to adjust figure sizes for matplotlib """ import matplotlib print "using MPL version:", matplotlib.__version__ matplotlib.use("WXAgg") # do this before pylab so you don'tget the default back end. import pylab import numpy as np # Generate and plot some simple data: x = np.arange(0, 2*np.pi, 0.1) y = np.sin(x) pylab.plot(x,y) F = pylab.gcf() # Now check everything with the defaults: DPI = F.get_dpi() print "DPI:", DPI DefaultSize = F.get_size_inches() print "Default size in Inches", DefaultSize print "Which should result in a %i x %i Image"%(DPI*DefaultSize[0], DPI*DefaultSize[1]) # the default is 100dpi for savefig: F.savefig("test1.png") # this gives me a 797 x 566 pixel image, which is about 100 DPI # Now make the image twice as big, while keeping the fonts and all the # same size F.set_size_inches( (DefaultSize[0]*2, DefaultSize[1]*2) ) Size = F.get_size_inches() print "Size in Inches", Size F.savefig("test2.png") # this results in a 1595x1132 image # Now make the image twice as big, making all the fonts and lines # bigger too. F.set_size_inches( DefaultSize )# resetthe size Size = F.get_size_inches() print "Size in Inches", Size F.savefig("test3.png", dpi = (200)) # change the dpi # this also results in a 1595x1132 image, but the fonts are larger. </code></pre> <p>Output:</p> <pre><code>using MPL version: 0.98.1 DPI: 80 Default size in Inches [ 8. 6.] Which should result in a 640 x 480 Image Size in Inches [ 16. 12.] Size in Inches [ 16. 12.] </code></pre> <p>Two notes:</p> <ol> <li><p>The module comments and the actual output differ.</p></li> <li><p><a href="https://stackoverflow.com/questions/335896/how-to-complete-this-python-function-to-save-in-the-same-folder#336001">This answer</a> allows easily to combine all three images in one image file to see the difference in sizes.</p></li> </ol>
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    1. POHow do you change the size of figures drawn with matplotlib?
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