MatLab memory allocation when max size is unknown

Question

I am trying to speed up a script that I have written in Matlab that dynamically allocates memory to a matrix (basicallly reads a line of data from a file and writes it into

Answer 1

To solve your error, simply use this syntax when allocating

data = [data; zeroes(1000, size(data,2))];

You might want to read the first line outside the loop so you'll know the number of columns and make the first allocation for data.