[eigen] A not so simple product

[Benjamin Schindler <bschindler@xxxxxxxxxxxxxxx>]

Hi

Okay, I'm trying to figure the most efficient way to vectorize this 
product:

MatrixXf m(N,3);
VectorXf rho(N);
VectorXf w(M);

What I would like to do: The i'th row of m is suppposed to get 
multiplied by 1 / (rho(i)*w(i))

I've not yet found a way which actually works as a short 
eigen-expression... is there any or do I have to go back to the old 
rusty for loop? :)

Thanks
Benjamin

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