CODEWITHSUNDEEP
matlabgraphing
codeAligned
codeAligned

Reputation: 189

Matlab plotting, multiple plots with one script

Working on a review exercise from Van Loan's Introduction to Scientific Computation. It's P1.2.4 in case anyone wants to know. I can't figure out why my code produces a single plot.

x=linspace(0,2*pi, 30);
for k=1:5  
plot(x, sin(k*x));

end

It seems like I need to do 

 plot(x, sin(x), x, sin(2*x), x, sin(3*x)....)

But this seems to be an excessive amount of hand coding, is there a more elegant way?

Upvotes: 0

Views: 727

Answers (2)

Andy
Andy

Reputation: 8091

Do you want 5 separate plots? Then use something like

for k=1:5
figure
plot(x, sin(k*x));
end

Or all plots in one figure? In this case use "hold"

hold on
for k=1:5
plot(x, sin(k*x));
end
hold off

or the third method: use plot with X and Y as matrices

Upvotes: 1

Autonomous
Autonomous

Reputation: 9075

You can use hold on in a for loop. You also need to use the 'Color' field in plot to make the plots of distinct color. At each iteration, just choose a triplet of random numbers between 0 to 1.

x=linspace(0,2*pi, 30);
for k=1:5  
    plot(x, sin(k*x),'Color',rand(1,3));hold on;
end
hold off;

Upvotes: 1

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