/*
Get the number of cases for V.
*/
-void
-design_matrix_get_case_count (struct design_matrix *dm, const struct variable *v)
+size_t
+design_matrix_get_case_count (const struct design_matrix *dm, const struct variable *v)
{
size_t i;
assert (dm != NULL);
return dm->n_cases[i];
}
-
+size_t
+design_matrix_get_n_cols (const struct design_matrix *d)
+{
+ return d->m->size2;
+}
+
+size_t
+design_matrix_get_n_rows (const struct design_matrix *d)
+{
+ return d->m->size1;
+}
+
+double
+design_matrix_get_element (const struct design_matrix *d, size_t row, size_t col)
+{
+ return (gsl_matrix_get (d->m, row, col));
+}
+
+void
+design_matrix_set_element (const struct design_matrix *d, size_t row, size_t col, double x)
+{
+ gsl_matrix_set (d->m, row, col, x);
+}