MATLAB: Combine 3 graphics into a single one

calling function

Hi,
I'm trying to combine 3 graphics into a single one . First, here is my program
   function graphique()
  global x h f_vec i
  h_vec=[0.015625,0.1,0.5];
  x=linspace(0.1,2);
      for i=1:3
      h=h_vec(i);
      f = F();
      end
  plot(x,f_vec)
  end
  function f=F()
      global h x f_vec i 
      f= 1./(((1-x.^2).^2+h.*x.^2).^(1/2));
      f_vec(i)=f;
  end
I was expecting that matlab will starts with the first iteration with i=1, associate a value h=0.015625 and call the function f=F(). He calculates f into the second block with the big equation and associate all the values of f to f_vec(1) then come back to the loop "for" with i=2… After doing all 3 iterations, he would get out of the loop and plot a vector f_vec in function of x. But I get an error with f=F() because it seems like having this variable into another function his not for him consider as using it.
Anyway the goal is to get a single window combining 3 graphs. I need help this program was mostly done by a user here and I'm still unable to finish it. Is there a way to use
f_vec
as a storage for all values of the 3 iterations.

Best Answer

Why can't you just take the two lines from your function and put it into the loop.
function graphique()
global x h f_vec i
h_vec=[0.015625,0.1,0.5];
x=linspace(0.1, 2, length(j));
for i=1:3
  h=h_vec(i);
  f= 1./(((1-x.^2).^2+h.*x.^2).^(1/2));
  f_vec(i)=f;
end
plot(x,f_vec)
end
Get rid of the F() function definition. Then you'll have just a single function that does everything your two functions used to do. Be sure to fix linspace() like I did so that it has the same number of elements as h.
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