document 3D surface API

[ggggggggg]

Searching docs for surface turn up nothing useful. I'm trying to figure out how to set the color of the surface, rather than get the default heatmap behavior.

[JackDevine]

I agree that the documentation is a little lacking, although to be fair surface is just a convenience function for plot(arr, seriestype = :surface). The default color gradient is inferno, but you can change that through the color key word argument. Try these

surface(randn(10, 10), color = :rainbow)
surface(randn(10, 10), color = :plasma)

Here is a list of color gradients available in matplotlib.

[t-bltg]

Fixed.