3D surface plot with varying x-axis data

Hello,

I am having some trouble with the 3d plot commands, and I was hoping someone could help. I am using the phased array system toolbox, and the only option there is to have elements of an array located in the YZ plane. That is, I have elements of a static array evenly spaced on a grid in the YZ plane.

I would like to show the array moving as I scan the array, to visually represent what I am doing with the array. I would like to keep the YZ points the same, and manipulate the x-axis data to move the array.

plot3 is not useful because it does not plot a surface. surf and mesh are not useful, because they expect a grid on the XY plane and the Z heights to vary. I cannot use the delaunay or griddata techniques because my data is not random - it is all on a grid. Because the points stack in the z-axis, griddata and delaunay and others fail trying to make a triangular mesh because the points are collinear.

xPos = [-0.0092 -0.0092 -0.0092 -0.0092 -0.0092 -0.0046 -0.0046 -0.0046 -0.0046 -0.0046 0 0 0 0 0 0.0046 0.0046 0.0046 0.0046 0.0046 0.0092 0.0092 0.0092 0.0092 0.0092];
yPos = [-0.0050 -0.0050 -0.0050 -0.0050 -0.0050 -0.0025 -0.0025 -0.0025 -0.0025 -0.0025 0 0 0 0 0 0.0025 0.0025 0.0025 0.0025 0.0025 0.0050 0.0050 0.0050 0.0050 0.0050];
zPos = [0.0050 0.0025 0 -0.0025 -0.0050 0.0050 0.0025 0 -0.0025 -0.0050 0.0050 0.0025 0 -0.0025 -0.0050 0.0050 0.0025 0 -0.0025 -0.0050 0.0050 0.0025 0 -0.0025 -0.0050];

Those coordinates should show a flat rectangular plate rotated about the z-axis, but as mentioned, I can't get this to plot as a surface with plot3, nor can I get surf, mesh, griddata, or delaunay to work.

Any help would be greatly appreciated.

Thanks,

~Chuck

Answer 1

[Walter Roberson]

Create a hgtransformgroup and

surf(y, z, x, 'Parent', that handle)

then set the rotation matrix on the transform group to permute the axes as required. See makehgtransform

[Charles]

Kind of cheating, I wish I could enter X as a matrix and Y and Z as vectors and that MATLAB would recognize what I want to do. But, it works.