-/*
- src/math/coefficient.c
-
- Copyright (C) 2005 Free Software Foundation, Inc. Written by Jason H Stover.
-
- This program is free software; you can redistribute it and/or modify it under
- the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- more details.
-
- You should have received a copy of the GNU General Public License along with
- this program; if not, write to the Free Software Foundation, Inc., 51
- Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.
-*/
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 2005 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef COEFFICIENT_H
#define COEFFICIENT_H
#include <assert.h>
-#include <math/linreg/linreg.h>
#include <src/data/variable.h>
#include <src/data/value.h>
Initialize the variable and value pointers inside the
coefficient structures for the linear model.
*/
-void pspp_coeff_init (struct pspp_coeff **, struct design_matrix *);
+void pspp_coeff_init (struct pspp_coeff **, const struct design_matrix *);
void
*/
int pspp_coeff_get_n_vars (struct pspp_coeff *);
+/*
+ Which coefficient does this variable match? If the variable is
+ categorical, and has more than one coefficient, report the first
+ coefficient found. Note that in this case, the result will depend on
+ the order of COEFS.
+ */
+struct pspp_coeff *
+pspp_coeff_var_to_coeff (const struct variable *, struct pspp_coeff **, size_t, const union value *);
+
/*
Which variable does this coefficient match? The int argument is usually
0, unless the coefficient refers to an interaction.
const union value *pspp_coeff_get_value (struct pspp_coeff *,
const struct variable *);
-const struct pspp_coeff *pspp_linreg_get_coeff (const pspp_linreg_cache
- *,
- const struct variable
- *,
- const union value *);
+/*
+ Get or set the standard deviation of the variable associated with this coefficient.
+ */
+double pspp_coeff_get_sd (const struct pspp_coeff *);
+void pspp_coeff_set_sd (struct pspp_coeff *, double);
+
+/*
+ Get or set the mean for the variable associated with this coefficient.
+*/
+double pspp_coeff_get_mean (const struct pspp_coeff *);
+void pspp_coeff_set_mean (struct pspp_coeff *, double);
#endif