-/* PSPP - computes sample statistics.
+/* PSPP - a program for statistical analysis.
Copyright (C) 2007 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 2 of the
- License, or (at your option) any later version.
+ 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.
+ 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
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* Casegrouper.
+
+ Breaks up the cases from a casereader into sets of contiguous
+ cases based on some criteria, e.g. sets of cases that all have
+ the same values for some subset of variables. Each set of
+ cases is made available to the client as a casereader. */
#ifndef DATA_CASEGROUPER_H
#define DATA_CASEGROUPER_H 1
#include <stdbool.h>
#include <stddef.h>
-struct case_ordering;
struct casereader;
struct ccase;
struct dictionary;
+struct subcase;
struct variable;
struct casegrouper *
void (*destroy) (void *aux),
void *aux);
struct casegrouper *casegrouper_create_vars (struct casereader *,
- struct variable *const *vars,
+ const struct variable *const *vars,
size_t var_cnt);
struct casegrouper *casegrouper_create_splits (struct casereader *,
const struct dictionary *);
-struct casegrouper *casegrouper_create_case_ordering (struct casereader *,
- const struct case_ordering *);
+struct casegrouper *casegrouper_create_subcase (struct casereader *,
+ const struct subcase *);
bool casegrouper_get_next_group (struct casegrouper *, struct casereader **);
bool casegrouper_destroy (struct casegrouper *);