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

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Hi, I'm trying to do a for loop as following.
It can loop up to 633 times but can't do more and I got the error message as in the title.
I appreciate if you could teach me how to solve this.
load variables
for j = 1:length(r)
[content(j)] = vlookup(AC, r(j), 2, 1);
end

Accepted Answer

Turlough Hughes
Turlough Hughes on 20 Aug 2021
Edited: Turlough Hughes on 20 Aug 2021
Your vlookup is not returning a value when j = 634. You will need a condition to deal with this when it happens.
For example:
load variables
k = 1; % loop variable
content = zeros(size(r)); % preallocate
for j = 1:length(r)
v = vlookup(AC, r(j), 2, 1);
if ~isempty(v)
content(k) = v;
k = k+1; % increment k
end
end
% remove excess rows that arose due to empty output from vlookup
idel = find(content~=0,1,'last');
content(idel+1:end) = [];
  3 Comments
Turlough Hughes
Turlough Hughes on 21 Aug 2021
Happy to help and welcome to MATLAB Answers! Please accept the best answer when you're happy the question has been fully addressed.

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