[Octave-bug-tracker] [bug #31305] slow contour plot

[David Bateman]

Follow-up Comment #2, bug #31305 (project octave):

What I mean by doing something like what is done in the scatter functions is
like the attached patch. It seems to speed up the contour function
significantly. My contour(rand(15)) call is now down to 0.5sec.

However, I still have no idea what matlab does to get this code to be fast.
Also as the patches in the contourf function have to be sorted by their size
to get them to be drawn correctly it can't be applied to the contourf code in
__contour__.m

D.

(file #21659)
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Additional Item Attachment:

File name: patch.contour                  Size:6 KB


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