Problem with non-cubic data plotting using slice.

Question

Robert Malkin 2020-4-17

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https://ww2.mathworks.cn/matlabcentral/answers/518631-problem-with-non-cubic-data-plotting-using-slice

评论： Ameer Hamza 2020-4-17

Hello,

I'm trying to use SLICE to plot some 3D volumetric data. When I create data that is say, 5x5x5 in size SLICE works fine.

If the data however is 5*3*4 then I can't get it to work. I tried playing with both MESHGRID and NDGRID but I can't get it to tango.

Any suggestions would be very, very welcome. If it's a really easy notation error please go easy on me, kind of new here!

Rob

x = [-2,-1,0,1,2];
y = [-1,0,1];
z = [0,1,2,3];
data = rand(5,3,4);
[mesh_x, mesh_y, mesh_z] = meshgrid(x, y, z);
slice(mesh_x, mesh_y, mesh_z, data , 0, 0, 1); shading interp;

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Answer 1

Ameer Hamza 2020-4-17

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https://ww2.mathworks.cn/matlabcentral/answers/518631-problem-with-non-cubic-data-plotting-using-slice#answer_426598

编辑：Ameer Hamza 2020-4-17

在 MATLAB Online 中打开

See the order of dimensions in rand()

x = [-2,-1,0,1,2];
y = [-1,0,1];
z = [0,1,2,3];
data = rand(3,5,4);
[mesh_x, mesh_y, mesh_z] = meshgrid(x, y, z);
slice(mesh_x, mesh_y, mesh_z, data , 0, 0, 1); shading interp;

The first axis of a matrix is along rows, i.e., parallel to the y-axis. The second axis of a matrix is along the column, i.e., x-axis, and the third is perpendicular to the plane, i.e., z-axis.