Analyze a variable number of datas

Dear all, I have a changing number of data to be analyzed. How can I do it the smart way without an if condition (copy and paste with ascending numbers) and without the "eval" instruction which I used to far. Simple example plotting two waves (with one if condition). How should I write the code to be flexible to plot 1, 2 or three waves, depending on the result (size(a,1)) I get? Looking forward to your advice. Thanks a lot!

t = 0:0.1:2*pi; 
a = [sin(t); cos(t)];
figure  
if size(a,1)==2
   subplot(2,1,1)
   plot(a(1,:))
   subplot(2,1,2)
   plot(a(2,:))
end

Answer 1

[Thorsten]

N = size(a,1)

for i=1:N
  subplot(1,N,i), plot(a(i,:))
end

[Peter]

Yes, thanks - I see, my example was to simple. Indeed, this is the solution for the subplot, but I do have some uicontrol elements and variable names as well. This is what puzzles me, because I do not get along with the arrays in this case...

[Thorsten]

Please provide some example of your uicontrol elements and variable names and the code you have so far.