Plotting z values associated with xy coordinate for 3d plot

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Colton
Colton 2013-2-21
I am trying to plot a 3d plot for a magnetic data set. Each z value is associated with an x,y coordinate.
For example there may be some point 1,2 with a value of 67. This in turn would plot on the xy plane at 1,2, but would have point at 67.
I want to do this for a major data set with lots of points so I cannot post my code.
Here is what I did:
I imported the data from an excel spread sheet. I set the x coordinates as x = [...], y = [...], and z = [...]. Each vector is the same dimension.
Then i did:
figure;
axis([xmin xmax ymin ymax zmin zmax]);
meshc(X,Y,Z);
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Colton
Colton 2013-2-21
Additionally, my x,y,z values look something like:
x = [ 22.343;55.66;89.3432;...]
and all are 1371x1
Wouter
Wouter 2013-3-17
Hi Colton,
A simple solution might be using the plot3 function. You can use griddata to create a surface through your data points. See the help file for griddata.

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回答（1 个）

Omid Adljuy
Omid Adljuy 2013-4-5
If you want to plot a 3D surface using your dataset, then the patch command shall help you. However, the patch command requires an additional Faces matrix. Faces matrix defines the points that must be connected to each other to form the triangles of the mesh of the 3D structure.
Besides the patch command, this tutorial video might be of use as well.

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