Convert from XYZ surface plot to just Z surface plot

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Jonathan Wells
Jonathan Wells 2018-10-20
评论： Star Strider 2018-10-20
I have a data set consisting of xcoord, ycoord, and density in vectors, exported from Fluent. I would like to be able to view the data as an m x n matrix, rather than as a surface plot, surf(X,Y,Z), so that I can access specific elements of that matrix directly. (i.e., I would like to be able to say density(ii,jj) = ....). I've tried many methods for doing this, and all have resulted in a skewed looking plot.

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Star Strider
Star Strider 2018-10-20
You did not say what you have tried, and what did not work.
Consider:
Z = randn(100);
figure
surf(Z)
view(0,90)
That produces a (100x100) matrix, and the view call lets you look at it from the top, rather than from the side.
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Jonathan Wells
Jonathan Wells 2018-10-20
I must have overlooked that the first time, but griddata did the trick! Thank you both so much :)

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