surf plot of f(x,y). With gridlines, but more sparse than default

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Zaheer Ali
Zaheer Ali 2021-12-14
回答： Walter Roberson 2021-12-14
surf(x,y,z) where z is oscillatory. Therefore x,y are 100x100. I want the gridlines (don't want to use flat or interp options). However, too many gridlines don't look good. Looking for a way to reduce gridlines by 50% or 75% etc. in both x and y coord.

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回答（2 个）

cr
cr 2021-12-14
编辑：cr 2021-12-14
s=surf(x,y,z)
Now use s.Parent.XTick and set it to a vector. E.g.
s.Parent.XTick = 0:2:10;
will make the X-grid 2units with limits of X from 0 to 10. Similarly s.Parent.Ytick may be used to set the y-grid spacing.
Walter Roberson
Walter Roberson 2021-12-14
I suspect you are not talking about the "gridlines" as such: I think you are talking about the drawing of the edges of each face.
There is no direct way to control the drawing of the edges.
What you can do is https://www.mathworks.com/help/matlab/ref/surf.html#namevaluepairarguments
Use 'edgecolor', 'flat', and supply a 'CData' that includes a lof of NaN .
Use a different color for each edge based on the values in the CData property.
First you must specify the CData property as a matrix the same size as ZData.
The color value at the first vertex of each face (in the positive x and y directions)
determines the color for the adjacent edges.

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