matrix columnwise subtraction
2 views (last 30 days)
Show older comments
I have the following matrix:
[ 1 2 3
1 3 4
4 5 6]
I need:
[ 0 -1 -2
0 -2 -3
0 -1 -2]
How can I do it?
0 Comments
Accepted Answer
Image Analyst
on 25 Nov 2011
Try bsxfun:
% Generate sample data.
m = rand(3,5)
% Extract out the first column
m1 = m(:,1)
% Subtract first column from all the columns.
mMinusM1 = bsxfun(@minus,m,m1)
2 Comments
Titus Edelhofer
on 25 Nov 2011
Small typo, to reproduce the example you need to subtract m from m1: m1MinusM = bsxfun(@minus, m1, m).
More Answers (0)
See Also
Categories
Find more on Logical in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!