What is the definition and operation of [row,col]

What is the definition and operation of [row,col]

Does this mean all rows and all columns selected and read off a data file?>

[dpb]

Alone, just creates a new array of unknown dimensions...it's indeterminate as to whether row, col are even variables (probably) or functions in isolation, however.

Must have context to know anything more...

Answer 1

[Jan]

It depends on what "row" and "col" are and on the context:

row = 2;
col = 3;
x   = [row, col]    % a [1 x 2] vector with the contents: [2,3]

% or:
y = rand(3,4)
[row, col] = size(y)   % Now row is 3 and col is 4

Maybe:

row = 4;
col = 5;
x   = rand(1, 20);
y   = reshape(x, [row, col])
% Now y is a [4 x 5] matrix containing the elements of x

There are many further possible meanings, so please post the context. Maybe it helps, if you simply try it and run the code in the command window. Experiments can reveal the meaning very easily.