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Surface Plot with 3 Matrix (100x100)

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Eren Tatar
Eren Tatar 2021-6-8
评论： Walter Roberson 2021-6-9
Hello, I have three 100x100 matrices. Now I have always shown the visualization with scatter3 (x, y, z). However, I would like to display the plot with the mesh or surface command. Every time I use these commands, however, I get error messages. Could someone help me with this? The plot should look something like the scatter3 command.

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回答（1 个）

Chunru
Chunru 2021-6-9
编辑：Chunru 2021-6-9
It seems that the data is not on regular grid for mesh and surface command.
For irregular grid, you can consider to interpolate the irregular-grided data for plotting:
F = scatteredInterpolant(x,y,z);
[xq, yq] = meshgrid(xrange, yrange); % define the grid yourselfe
zq = F(xq,yq);
mesh(xq, yq, zq)
  1 个评论
Walter Roberson
Walter Roberson 2021-6-9
Ran in:
pcolor() is really just surf() with view() set from above and with the ZData property forced to all 0.
That is, any x and y arrays that work for pcolor() would also work for surf() and so you cannot do more with pcolor() than with surf()
It is valid to use nonlinear points for the X and Y for surf()
[X, Y] = ndgrid(exp(-linspace(0,2*pi)), cos(linspace(0,2*pi)));
Z = sqrt(X.^2 + Y.^2);
surf(X, Y, Z, 'edgecolor', 'none')

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