Hello.

I'm porting some Matlab code to C++ using Eigen.
I have two 3xN matrices, A and B, where each column represents a vector. I need to calculate a third 3xN matrix, C, where each column is the cross product of the corresponding columns in A and B.
In Matlab I can get this using cross):

Code: Select all

C = cross(A, B)

Is there any way to do something similar with Eigen without using the obvious for loop?

nope, but feel free to add a feature request in our bugtracker (http://eigen.tuxfamily.org/bz/). I guess it should be implemented through the colwise/rowwise proxy to tell whether we should consider column or row vectors, but then we have to discuss to see whether this is consistent with the already existing A.colwise().cross(v) where A is a matrix and v a vector....