Multiply each row of a matrix by a different scalar

[Asaf Weinstein]

Hi,

I have a vector v (length m) and a matrix A (dim m-by-n). 

I would like to return the matrix whose i-th row is v[i] * A[i,]. What's the simplest way?

Thank you!

Asaf

[amit gal]

Transpose the matrix. Use standard element-wise multiplication, and then transpose back. Should do the job

t(t(A)*v)

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[Asaf Weinstein]

Toda Amit!

Works well, only no need for transposing A, ie use simply: t(A*v)

[amit gal]

Yes. My mistake. No need to transpose, unless you want to work on columns rather than rows. I mixed things up.