Having trouble graphing multiple subplots while using a for loop. Please help! Much appreciated
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I need to plot a equation for a few different values of n with x in a specific range. I need to plot these on three seperate subplots while using a for loop. This is what I have so far:
n=[4 2 1];
x=-5:5;
y=0
hold on
for k=1:length(n);
for j=1:length(x)
y=n(k).*cos(x(j));
subplot(1,3,k);
plot(x,y,'-Xb');
end
end
The only issue is that I keep getting a single constant value for y for each of my plots? How do I get the graphs to come out correctly?
Any help is much appreciated. Thanks!
回答（1 个）
You have created too many loops. Only the outer loop in needed, the inside one should be replaced by a simple vectorized operation:
n = [4,2,1];
x = -5:5;
for k = 1:length(n);
y = n(k).*cos(x);
subplot(1,3,k);
plot(x,y,'-xb');
end
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2016-7-13
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