Plot data (3d) only inside polygon

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Shakir Hussain 2019-3-26

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https://ww2.mathworks.cn/matlabcentral/answers/452434-plot-data-3d-only-inside-polygon

编辑： Shakir Hussain 2019-3-26

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I am trying to plot data (45*56*6) only inside polygon and i tried these steps

imported shapefile and run query to sperate data point inside and outside polygon as

for i=1:6;
isin = inpolygon(X,Y,S.X,S.Y);
test(:,:,i(~isin)) =  NaN;
end;

and plot

for i =1:6
    subplot(3,2,i);
    imagesc(D_masked(:,:,i));
    set(a,'AlphaData',~isnan(a))
 end

but it did not work for me as

imagesc(xyz,'AlphaData',~isnan(xyz))

xyz here is equal to 45*56 2d data.

Any kind of help is appreciatable.

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KSSV 2019-3-26

It can be done...what problem you are facing? Don't use imagesc. Use pcolor.

Shakir Hussain 2019-3-26

编辑：Shakir Hussain 2019-3-26

In first section crossponding values of each slice of 3d data with logical 2d data has to replace with NaN by keeping rest of all values as it is (that are 0-100) which I could not figure out. Secondly I would like to use imagesc instead of pcolor.

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MATLAB Graphics 2-D and 3-D Plots Surfaces, Volumes, and Polygons Surface and Mesh Plots

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