FastDeploy/third_party/eigen/doc/snippets/Map_inner_stride.cpp

int array[12];
for (int i = 0; i < 12; ++i) array[i] = i;
cout
    << Map<VectorXi, 0, InnerStride<2> >(
           array,
           6)  // the inner stride has already been passed as template parameter
    << endl;