Plotting two vectors side by side.

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Robbie McDermott
Robbie McDermott 2017-11-29
评论： Star Strider 2017-11-29
I have two arrays that should plot to give the same (very similar) graphs. My first array, A, is 1 X 601 while my second array, B, is 1 X 1200. I want to re-scale one of these so I can plot them together and look at where they deviate from each other. What is the best way to re-scale them so that the minimums from array A are aligned to the minimums of array B? Or at least the two major minimums are aligned.
Any help would be greatly appreciated, I have been looking for a solution online however this one beats me.
Thanks in advance!
  2 个评论
Sammit Jain
Sammit Jain 2017-11-29
Can you share some information about the variable you're plotting it against and what is the size for that one?
Robbie McDermott
Robbie McDermott 2017-11-29
Hi Sammit,
I haven't plotted at against anything yet. I just loaded up the data file and used the plot function to look at it.

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采纳的回答

Star Strider
Star Strider 2017-11-29
Use the linspace function:
A = rand(1, 601); % Create Data
B = rand(1, 1200); % Create Data
Ax = linspace(0, 601, 601); % X-Coordinate Vector For ‘A’
Bx = linspace(0, 601, 1200); % X-Coordinate Vector For ‘B’
figure(1)
subplot(2,1,1)
plot(Ax, A)
grid
subplot(2,1,2)
plot(Bx, B)
grid
Experiment to get the result you want.
  2 个评论
Robbie McDermott
Robbie McDermott 2017-11-29
Aww StarStrider!! Thats, great, I had seen this method posted else where but I couldn't see how it would help! Your explanation is much better! Thank you, that is a great help, my hat off to you!
p.s. cracking name too... star wars or LOTR reference?
Star Strider
Star Strider 2017-11-29
As always, my pleasure!
I’m an Instrument Rated Private Pilot, and ‘StarStrider’ evolved from that. I’d not thought of the Star Wars or LOTR references before.
If my Answer solves your problem, please Accept it!

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更多回答（1 个）

M
M 2017-11-29
I am not sure if it is really hat you want but here is an idea :
a=rand(10,1);
b=rand(15,1);
a and b are two vectors of different length and amplitude.
Using
plot(a);
hold on;
plot(b./max(b).*max(a))
you can plot a and b on the same graph and the maximum of a and b are of the same amplitude.

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