How can I use subplots with an inside function?

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

[Walter Roberson]

Please show us the code for polygon()

[gm76]

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

[gm76]

Any ideas?

[Image Analyst]

It worked fine for me. All 6 plots showed up.

[Daniel Shub]

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)

Answer 1

[Image Analyst]

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

[gm76]

I only get a plot with polygon(8) which is an octagon. There are no subplots. I have each function in a separate m-file.

[gm76]

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]

It should work in a single file, or two different m-files. You must have a close() or clf in there somewhere.

Answer 2

[Leah]

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

[gm76]

Yeah I had a clf command inside polygon. Works perfectly now. Thanks!

Answer 3

[Jake_K]

I guess your problem is that you always open a new figure in your polygon function. So take out figure() and it should work.