In an assignment A(I) = B, the number of elements in B and I must be the same error

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Hi, I would like to know how to change the 0's in C that are in the same position where d1 finds values where (d<=d0) with the corresponding d value. d is a 100x1 array and d0 is the mean value. For instance if the first and fourth elements in d are less than d0, then the first and fourth elements in d are stored as the first and fourth elements in C respectively.
C=zeros(100,1);
d1=find(d<=d0);
C(d1)=d;

Accepted Answer

Image Analyst
Image Analyst on 21 Apr 2015
Almost right. Try this instead:
C=zeros(100,1);
d1 = find(d<=d0);
C(d1)=d(d1);

More Answers (1)

Star Strider
Star Strider on 21 Apr 2015
Edited: Star Strider on 21 Apr 2015
Using ‘logical indexing’ works well here:
C = zeros(100,1);
d = randi(10, 100, 1);
d0 = mean(d);
C(d<=d0) = d(d<=d0);

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