[Matplotlib-users] Why the V parameter in matplotlib.axes.Axes.contour must be increasing?

[Xi Shen]

Hi,

https://matplotlib.org/api/_as_gen/matplotlib.axes.Axes.contour.html says
the contour function accept a vector parameter V which must be in
increasing value. But the contour function in MATLAB does not have this
restriction.

I understand the underlining implementation of these two functions could be
very different. I want to understand what is the purpose of this
restriction, and if it possible to create a contour image the same as
MATLAB does by using contour with V = [0 0]?


Regards,
David
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