Hi,
Is there a way(except using a for loop) to skip elements when accessing the elements in a vector or matrix using Eigen ? I'm using Visual Studio 2013 and I'm programming in C++. I'm looking for an equivalent of A(1:2:p) in MATLAB which will give me every other element in an arbitrary vector A.

Yes, using a Eigen::Map and setting the Eigen::Stride parameter to "2".

To complete the previous answer:

Code: Select all

RowVectorXf v = RowVectorXf::LinSpaced(20,1,20);
Map<RowVectorXf,0,InnerStride<2> > v2(v.data(), v.size()/2);
std::cout << v2 << std::endl;


output:

Code: Select all

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