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Figure background colors #7619

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@darkdragon-001

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@darkdragon-001

I find the current handling of background colors very non-intuitive:

  1. figure facecolor is not applied for savefig() by default
  2. figure facecolor is not applied setting frameon=False
  3. axis_bgcolor is not applied when hiding axis lines/ticks via axis('off')

So using a white plain surface to draw objects needs the following code:

fig = figure(..., facecolor='w', edgecolor='None')
ax.axis('equal')        # equal scale
ax.axis('off')          # do not show axis
ax.axis([-1, 1, -1, 1]) # scale to unit lengths
show()
fig.savefig(..., facecolor=fig.get_facecolor(), edgecolor='None', transparent=True)

My suggestion

  • apply same colors to savefig() by default
  • mention in the docs of axis_bgcolor and axis('off') that this setting is ignored
  • mention in the docs of facecolor and frameon that this setting is ignored

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