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How can I extend the plot area to take up the whole canvas and essentially remove the gray area in the image? I've looked around and I haven't found any solutions, although maybe it's because I don't know what to call that area so searching is challenging.

Using fig.tight_layout() reduces the gray but does not remove it.

from matplotlib import pyplot as plt y = [1,3,5,6,7,8,12,13,15,15,16,25,26,28,29,36] x = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15] fig, ax = plt.subplots(figsize=(8,4), dpi=85) ax.stackplot(x, y, color='w', colors=('#ededed',)) ax.xaxis.set_visible(False) ax.yaxis.set_visible(False) ax.set_ylim([0,max(y)*1.2]) ax.set_xlim([0,30]) plt.show()

enter image description here

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  • I believe if you save the file (as .png, or .pdf) they grey is all gone. Use plt.savefig('output_name.pdf') to do it. Commented Apr 20, 2015 at 1:31
  • @TravisJ. You are correct, but I'm not trying to get a file out of it, I am dumping it in a Tkinter window. Commented Apr 20, 2015 at 1:32

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Specify that the Axes take up the whole Figure when you create the Axes --

fig = plt.figure() ax = fig.add_axes((0,0,1,1), frameon=False) ax.plot([2,5,4])

enter image description here

now, there's a lot there isn't room for any more, e.g. external tick labels; and Tkinter may be doing some padding itself; but this is as large as you can make an Axes. ( (0,0,1,1) is extent in Figure coordinates.)

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