subtract different column by different number

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Patrick
Patrick am 1 Okt. 2014
Kommentiert: Patrick am 1 Okt. 2014
I have a 1000x3 matrix. I want to subtract different column from different number. For example, the first column elements will all be subtracted from 10, those in the second column will be subtracted from 2, the third column will be subtracted from 3.
Any good ways to do this? Thanks a lot!

Akzeptierte Antwort

Mischa Kim
Mischa Kim am 1 Okt. 2014
Patrick, use bsxfun:
A = [1 2 10; 1 4 20; 1 6 15];
A
A =
1 2 10
1 4 20
1 6 15
B = bsxfun(@minus, [1 2 3], A)
B =
0 0 -7
0 -2 -17
0 -4 -12

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