Hi All,

I want to find maximum value column for each row in matrix. I am doing it using for loop over the rows as shows below in code. I am wondering if there is better way of doing it, more precisely without using for loop. Also is maxcoeff vectorized?

Code: Select all

MatrixXf::Index   maxIndex;
MatrixXf m_sumik(nbSample_,nbCol_);
 for (int i = 0; i < nbSample_; ++i) {
        m_sumik.row(i).maxCoeff(&maxIndex);
        // further use of maxIndex
 }


Thanks for your answers,
Parmeet

There is no shorter way yet. Regarding vectorization, vec.maxCoeff() is vectorized (standard reduction), but not the version returning the index: vec.maxCoeff(int&). It's not impossible but I'd not expect significant gain if any.