How to Multiply a number to a row of matrix
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For example i have matrix
A = [ 1 2 3 ; 3 4 5]
I want to multiply 2 to the 2nd row of the matrix so i got
A = [ 1 2 3 ; 6 8 10]
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Star Strider
le 23 Déc 2017
Use bsxfun to multiply the first row by 1 (so it remains the same), and the second row by 2:
A = [ 1 2 3 ; 3 4 5];
A = bsxfun(@times, A, [1; 2])
A =
1 2 3
6 8 10
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David Wilson
le 26 Déc 2017
or if you have a recent version of Matlab, then one can avoid the cryptic bxfun with
>> A.*[1;2]
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