Plotting 3 unequal vectors

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jchris14
jchris14 2016-8-22
评论： Star Strider 2016-8-22
Hi guys,
having a little trouble plotting this. I want to plot timeMat in the x axis and other vectors (GrayValScan,StoreData) in the y axis. Note: GrayValScan and StoreData are both different dimensions from each other as well.
timeMat= abs(-860:0);
i=3;
n=107;
while n<=107
figure
hold on
plot(timeMat,GrayValScan)
plot(timeMat,storeData(:,i))
hold off
i= i+1;
end
I tried doing this based on another answer and repeat it for the other vector. Nothing worked.
maxLength = max(timeMat);
GrayValScan(length(timeMat)+1:maxLength) = 0;
Any suggestion? Thanks in advance

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Star Strider
Star Strider 2016-8-22
I would use the linspace function:
GVStimeMat = linspace(-860, 0, length(GrayValScan));
SDtimeMat = linspace(-860, 0, size(storeData,1));
i=3;
n=107;
while n<=107
figure
hold on
plot(GVStimeMat,GrayValScan)
plot(SDtimeMat,storeData(:,i))
hold off
i= i+1;
end
NOTE — I don’t have your data, so this is UNTESTED CODE. It should work.
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jchris14
jchris14 2016-8-22
Thank you for the explanation. I didn't realize that the n value didn't do anything in the loop. I took it out and dealt with just "I".
As for the dimension mismatch error I was getting, it was conditional error. I used a <= instead of just <
Star Strider
Star Strider 2016-8-22
My pleasure.
If you know in advance the limits ‘i’ should have, you can use a for loop. That might be more efficient, since it incorporates the incrementing of ‘i’ and would eliminate the separate counter increment assignment. (A while loop is best if you’re incrementing and testing a value calculated within a loop.)

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