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Concatenate unequal sized arrays produced in a loop

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SMA on 9 Nov 2015
Commented: Star Strider on 11 Jun 2019
I have a for loop (d = 1:57) for which I am trying to save the results in a single matrix, however each iteration produces a different length of array (e.g 1x58 single, 1x46 single, 1x59 single, ...). It is not possible to know the length of the longest array produced since I'll be running the same loop with various inputs and keeping track of the lengths will be tedious. How can I concatenate the arrays produced from the loop into one matrix perhaps by adding NaNs to the shorter arrays. Some suggested storing the vectors in matrix as result(d,:) which of course gives an error.
Result should have the dimension (57xlength of longest array).

Accepted Answer

Star Strider
Star Strider on 9 Nov 2015
I would use a Cell Array.
for d = 1:57
A{d} = ...
Notice the use of curly brackets ‘{}’ to denote the cell array elements.

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