Multiplying each column of a matrix with a specific value

I have a matrix

mat=[2,1,0,0;1,0,0,0;0,0,0,1]

I want to multiply the first column by 25, the second column by 5, the third column by 10 and the fourth column by 1 in a way that I get:

mat=[50,5,0,0;25,0,0,0;0,0,0,1]

Also, can the answer be generalized as I might end up adding more rows later on.

Thanks

Answer 1

[James Tursa]

mat=[2,1,0,0;1,0,0,0;0,0,0,1]; % 2D matrix
f = [25,5,10,1]; % row vector
result = f .* mat; % element-wise multiply with virtual expansion of row vector

If you have an earlier version of MATLAB, then use bsxfun:

result = bsxfun(@times,f,mat); % same functionality as f .* mat

[Areesh Adil]

Thank you so much

I came up with a convoluted way where I would multiply with scalars and then horizontally concatenate. But this is so much simpler. Thanks