Error: In an assignment A(:) = B, the number of elements in A and B must be the same.

Problem: TrajSimilarity is a struct of k elements, I want to put all the value of TrajSimilarity(1,k).aLongestString in a vector/array A. I try using this code but it generate error, can you help me to solve the problem?

Code:

for k=1:14
    A(k)=TrajSimilarity(1,k).aLongestString;
    end

Error:

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

Answer 1

[the cyclist]

I assume that A is either not initialized, or it is initialized as a numeric array. An element of a numeric array can only store one numeric value.

You might be able to use a cell array, which can store values of mixed types. In that case your syntax might be

A = cell(14,1);

for k=1:14
    A{k}=TrajSimilarity(1,k).aLongestString;
end

Notice the use of {} instead of () to access the contents of each cell.