Displaying the order of objects on an axis

Question

Bob Friday 2015-3-5

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评论： Bob Friday 2015-3-9

I have a matrix that I am making a surface plot of and then trying to overlay a rectangle on top of it. I can not get the rectangle to be displayed on top of the surface.

figure(6)
h1= surface(M)
h2= rectangle(0,0,3,3,'Facecolor','r')
% I have tried to flip the children objects of the current axes but they did not work. I also tried uistack
% Is there something about a surface object that prevents anything from being rendered on top of it?
set(gca,'children',flipud(get(gca,'children')))

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Adam 2015-3-5

Are you sure the rectangle is present on the axes and within the axis limits that you set rather than somewhere off the axes?

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Answer 1

Chris McComb 2015-3-5

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编辑：Chris McComb 2015-3-5

在 MATLAB Online 中打开

You're having this problem because the rectangle command draws the object in the xy plane, with z=0. Therefore, since I'm guessing your surface has z > 0, the rectangle necessarily falls underneath it.

What if you did something like this?

% Plot surface
h1 = surface(M);
% Max height in surface
max_surf = max(M(:));
% Make a patch instead of rectangle
h2 = patch([0 3 3 0], [0 0 3 3], max_surf*ones(1,4), 'r');