public Matrix(int nrow, int ncol)
{
if (nrow < 0 || ncol < 0)
{
throw new ArgumentException("Rows and Columns must be >= 0");
}
matrix = new igraph_matrix_t();
DllImporter.igraph_matrix_init(matrix, nrow, ncol);
}
public Matrix(double[,] mat)
{
if (mat == null)
{
throw new ArgumentNullException("mat");
}
matrix = new igraph_matrix_t();
var nrows = mat.GetLength(0);
var ncols = mat.GetLength(1);
DllImporter.igraph_matrix_init(matrix, nrows, ncols);
var colwise = new double[ncols * nrows];
for (var j = 0; j < ncols; j++)
{
for (var i = 0; i < nrows; i++)
{
colwise[j * nrows + i] = mat[i, j];
}
}
DllImporter.igraph_vector_init_copy(matrix.data, colwise);
}