Hi OCaMLers,

  here goes my usual way to input ASCII matrices from file in C++:

//  -------  start of fragment -----------
#include <iostream>
#include <vector>
using namespace std;

void input_matrix(vector<vector<double > >&vec) {
  int m, n;
  cin >> m;
  cin >> n;
  vec.resize (m);
  for( int i = 0; i<m; i++)
    vec[i].resize(n);
  for( int i = 0; i<m; i++)
    for( int j = 0; j<n; j++) 
      cin >> vec[i][j]; 
}
//  -------- end of fragment -------------

then for matrix :

  3
  3
  1 2 3 
  4 5 6
  7 8 9

stored in ASCII text file mymatrix.dat

i just run my program:

 % myprogram < mymatrix.dat

and it is done.

Thus, the few lines of code and i can apply all math I need. 

Is there any similar ascetic way in OCaML for 
doing the same?

Thanks a priori,
kind regards,
Valery A.Khamenya
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Bioinformatics Department
BioVisioN AG, Hannover

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