How can I use subplots with an inside function?

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gm76
gm76 2013-3-8
回答： Jake_K 2018-4-30
I am trying to create a figure with 6 subplots. My 'polygon' function creates a regular plot. The subplot command doesn't seem to recognize the function as a plot, and only the last plot is displayed (as a full plot). What am I missing? Thanks!
function draw_polygons()
subplot(2,3,1)
polygon(3);
subplot(2,3,2)
polygon(4);
subplot(2,3,3)
polygon(5);
subplot(2,3,4)
polygon(6);
subplot(2,3,5)
polygon(7);
subplot(2,3,6)
polygon(8);
end
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Daniel Shub
Daniel Shub 2013-3-8
What happens if you just do
subplot(2,3,1)
subplot(2,3,2)
subplot(2,3,3)
subplot(2,3,4)
subplot(2,3,5)
subplot(2,3,6)

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回答（3 个）

Image Analyst
Image Analyst 2013-3-8
Are you saying that this code does not produce 6 plots? Because it does for me (both functions are in test.m):
function test
subplot(2,3,1)
polygon(3);
subplot(2,3,2)
polygon(4);
subplot(2,3,3)
polygon(5);
subplot(2,3,4)
polygon(6);
subplot(2,3,5)
polygon(7);
subplot(2,3,6)
polygon(8);
end
function polygon(sides)
degrees=2*pi/sides;
theta=0:degrees:2*pi;
radius=ones(1,numel(theta));
graph=polar(theta,radius);
set(graph,'color','b','linewidth',2)
end
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gm76
gm76 2013-3-8
I tried putting the code for polygon in the same m-file like you did and it works. I don't understand why it doesn't work if they're in separate files.
Image Analyst
Image Analyst 2013-3-8
编辑：Image Analyst 2013-3-8
It should work in a single file, or two different m-files. You must have a close() or clf in there somewhere.

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Leah
Leah 2013-3-8
make sure you don't have a close or figure command inside of polygon
you could always try to step through with debugger to find out exactly what is happening in your code
Jake_K
Jake_K 2018-4-30
I guess your problem is that you always open a new figure in your polygon function. So take out figure() and it should work.

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