!include once #1035331 // EJML Include (Matrix library)

static double[] ejmlMatrixToVector(DMatrixRMaj matrix) {

  int w = matrix.getNumCols(), h = matrix.getNumRows();

  if (w == 1) {

    double[] vector = new double[h];

    for i to h:

      vector[i] = matrix.get(i, 0);

    ret vector;

  } else if (h == 1) {

    double[] vector = new double[w];

    for i to w:

      vector[i] = matrix.get(0, i);

    ret vector;

  } else

    fail("Matrix is not a vector: " + w + "*" + h);

}