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to_array_2d.hpp
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1 #ifndef STAN_MATH_PRIM_MAT_FUN_TO_ARRAY_2D_HPP
2 #define STAN_MATH_PRIM_MAT_FUN_TO_ARRAY_2D_HPP
3 
5 #include <vector>
6 
7 namespace stan {
8  namespace math {
9 
10  using Eigen::Dynamic;
11  using Eigen::Matrix;
12  using std::vector;
13 
14  // real[, ] to_array_2d(matrix)
15  template <typename T>
16  inline vector< vector<T> >
17  to_array_2d(const Matrix<T, Dynamic, Dynamic> & matrix) {
18  const T* datap = matrix.data();
19  int C = matrix.cols();
20  int R = matrix.rows();
21  vector< vector<T> > result(R, vector<T>(C));
22  for (int i=0, ij=0; i < C; i++)
23  for (int j=0; j < R; j++, ij++)
24  result[j][i] = datap[ij];
25  return result;
26  }
27 
28  }
29 }
30 #endif
vector< vector< T > > to_array_2d(const Matrix< T, Dynamic, Dynamic > &matrix)
Definition: to_array_2d.hpp:17

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