matplotlib bar graph black - how do I remove bar borders

Question

I'm using pyplot.bar but I'm plotting so many points that the color of the bars is always black. This is because the borders of the bars are black and there are so many of them that they are all squished together so that all you see is the borders (black). Is there a way to remove the bar borders so that I can see the intended color?

Read the docstring for `bar`. It says right there that setting `linewidth=0` means don't draw edges. — Warren Weckesser, Apr 09 '13 at 14:58

score 139 · Accepted Answer · answered Apr 09 '13 at 14:11

139

Set the edgecolor to "none": bar(..., edgecolor = "none")

answered Apr 09 '13 at 14:11

Robbert

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Whereas plural `edgecolors` works for scatterplots, only singular `edgecolor` works for bar graphs. – interpolack Jul 28 '15 at 19:43
Both `linewidth=0` and `edgecolor='none'` works also in `stackplot` :-) – Antonello Aug 19 '16 at 06:42
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`linewidth=0` is nicer because it lets you keep hatching. – Ian Hincks Feb 15 '18 at 18:30

score 20 · Answer 2 · answered Apr 21 '15 at 17:32

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Another option is to set edgecolor to be the intended color in your call to bar:

# If your intended color is blue, this will work:
bar(. . . , edgecolor='b')

answered Apr 21 '15 at 17:32

abcd

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matplotlib bar graph black - how do I remove bar borders

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