How do I make this array index into a function of two other array indices?

Question

0 个投票

I have the following arrays: cp, cx, theta, L

cp is a 71x1 array, cx is a 70x1 array, theta is a 70x1 array, L is a 70x1 array

I want to iterate:

for i=1:70
cx(i)=-L/(2)*(cp(i+1)+cp(i))*sin(theta(i));
end

I keep getting this error:

Unable to perform assignment because the left and right sides have a different number of elements.

Error in example (line 40)

cx(i)=-L/(2)*(cp(i+1)+cp(i))*sin(theta(i));

How do I fix this error?

1 个评论
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Dyuman Joshi 2023-9-18

You indexed every array but L?

Answer 1

Matt J 2023-9-18

编辑：Matt J 2023-9-18

0 个投票

Perhaps you meant to have this:

for i=1:70
 cx(i)=-L(i)/2*(cp(i+1)+cp(i))*sin(theta(i));
end

Matt J 2023-9-18

编辑：Matt J 2023-9-18

If so, then BTW the one-line,loop-free way to do this is,

cx=-L.*movmean(cp,2,'End','discard').*sin(theta);