How to merge 3d plots of level planes into one plot (graph)

Question

Thomas 2012-2-19

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/29559-how-to-merge-3d-plots-of-level-planes-into-one-plot-graph

编辑： Haozhe Wang 2021-11-10

I'm attempting to merge 3d plots from a function in the file exchange named 'plotregion.m' I'm using this function to get cross section plots in 3d that are at a fixed 'z' value.

For example:

figure(1)
plotregion([-1 0 0;-1 -24 0],[0; 72],[-50;-50;50],[50;50;50])
figure(2)
plotregion([-1 0 0;-1 -24 0],[0; 72],[-50;-50;49],[50;50;49])

These commands will give me two separate figures each with the plot of plane in 3d. I want to merge these two plots.

I've looked into using

X = findobj(...) 
copyobj(X,findobj(...))

I don't know how to used these commands.

In the end I will have a range of 'z' values for which I will obtain these plots and use a for loop to merge them all into one graph.

Any help would be greatly appreciated!

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Answer 1

Patrick Kalita 2012-2-27

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https://ww2.mathworks.cn/matlabcentral/answers/29559-how-to-merge-3d-plots-of-level-planes-into-one-plot-graph#answer_38929

在 MATLAB Online 中打开

I'm not familiar with the plotregion.m function, but the first thing I would do is check to see if returns a graphics object handle. If it does then you can collect all those handles and set their Parent property as needed.

If the function doesn't return a handle, then the best solution will depend a lot on how plotregion is written. First I would just try this:

figure(1)
plotregion([-1 0 0;-1 -24 0],[0; 72],[-50;-50;50],[50;50;50])
plotregion([-1 0 0;-1 -24 0],[0; 72],[-50;-50;49],[50;50;49])

If plotregion uses only low-level graphics commands (like patch and line), then that should work. It should keep adding objects to the same axes.

If plotregion uses high-level graphics commands that respect the hold state, then you could try this:

figure(1)
plotregion([-1 0 0;-1 -24 0],[0; 72],[-50;-50;50],[50;50;50])
hold on
plotregion([-1 0 0;-1 -24 0],[0; 72],[-50;-50;49],[50;50;49])

If all else fails, you could probably try this:

figure(1)
plotregion([-1 0 0;-1 -24 0],[0; 72],[-50;-50;50],[50;50;50])
a1 = gca;
figure(2)
plotregion([-1 0 0;-1 -24 0],[0; 72],[-50;-50;49],[50;50;49])
a2 = gca;
objectsThatWereJustCreated = get(a2, 'Children');
set( objectsThatWereJustCreated, 'Parent', a1 ); % move them to the first axes