Copying from one array to another

Hi,

I have a data.txt file that I import using txt2mat. The relevant data are in chunks of length 1250 or 1500 points, but when I try to copy them to an array I get a "Subscripted assignment dimension mismatch" error.

For example: A = [1;2;3;4;5] and B = [1;2;3;4;5;6] If I want to copy the contents of A and B to temp(1,:) and temp(2,:), respectively, I get the error. Is it possible for me to store the contents of A and B, although they are different lengths, in the same temp array?

Any help in handling this would be appreciated.. Thanks!

[Azzi Abdelmalek]

You know they are different sizes, then what do you want?

[John]

When you do an assignment like that, the rows have to be the same size. Consider using a cell. Or preallocating temp to be big enough to hold the biggest row and then storing the rows A and B after padding them with NaNs

Answer 1

[Star Strider]

As a cell array: yes. As a numeric array: no, unless you preallocate an array with a row length the size of the longest row vector.

Example:

A = [1;2;3;4;5]; 
B = [1;2;3;4;5;6];

% Cell Array:
tempc = {A B};

% Numeric Array
tempn = nan(max(size(A,1),size(B,1)),2);    % Preallocate NaN Matrix
tempn(1:size(A,1),1) = A;
tempn(:,2) = B;

[R J]

Ahh, ok I see. Thanks for clarifying this Star!

[Star Strider]

My pleasure!