1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2011, 2015 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 #include "libpspp/message.h"
21 #include "data/casegrouper.h"
22 #include "data/casereader.h"
23 #include "data/dictionary.h"
24 #include "data/dataset.h"
25 #include "data/missing-values.h"
27 #include "language/lexer/lexer.h"
28 #include "language/command.h"
29 #include "language/lexer/variable-parser.h"
30 #include "language/lexer/value-parser.h"
33 #define _(msgid) gettext (msgid)
38 cmd_t_test (struct lexer *lexer, struct dataset *ds)
41 const struct dictionary *dict = dataset_dict (ds);
45 /* Variables pertaining to the paired mode */
46 const struct variable **v1 = NULL;
48 const struct variable **v2 = NULL;
56 double testval = SYSMIS;
58 /* Independent samples mode */
59 const struct variable *gvar;
65 tt.wv = dict_get_weight (dict);
69 tt.missing_type = MISS_ANALYSIS;
74 lex_match (lexer, T_EQUALS);
76 for (; lex_token (lexer) != T_ENDCMD;)
78 lex_match (lexer, T_SLASH);
79 if (lex_match_id (lexer, "TESTVAL"))
82 tt.mode = MODE_SINGLE;
83 lex_match (lexer, T_EQUALS);
84 if (!lex_force_num (lexer))
86 testval = lex_number (lexer);
89 else if (lex_match_id (lexer, "GROUPS"))
94 lex_match (lexer, T_EQUALS);
96 if (NULL == (gvar = parse_variable (lexer, dict)))
99 gval_width = var_get_width (gvar);
100 value_init (&gval0, gval_width);
101 value_init (&gval1, gval_width);
104 if (lex_match (lexer, T_LPAREN))
106 parse_value (lexer, &gval0, gvar);
107 if (lex_token (lexer) != T_RPAREN)
109 lex_match (lexer, T_COMMA);
110 parse_value (lexer, &gval1, gvar);
120 if (! lex_force_match (lexer, T_RPAREN))
131 if (n != 2 && var_is_alpha (gvar))
133 msg (SE, _("When applying %s to a string variable, two "
134 "values must be specified."), "GROUPS");
138 else if (lex_match_id (lexer, "PAIRS"))
145 msg (SE, _("%s subcommand may not be used with %s."), "VARIABLES", "PAIRS");
150 tt.mode = MODE_PAIRED;
151 lex_match (lexer, T_EQUALS);
153 if (!parse_variables_const (lexer, dict,
155 PV_NO_DUPLICATE | PV_NUMERIC))
158 if (lex_match (lexer, T_WITH))
161 if (!parse_variables_const (lexer, dict,
163 PV_NO_DUPLICATE | PV_NUMERIC))
166 if (lex_match (lexer, T_LPAREN)
167 && lex_match_id (lexer, "PAIRED")
168 && lex_match (lexer, T_RPAREN))
173 msg (SE, _("PAIRED was specified but the number of variables "
174 "preceding WITH (%zu) did not match the number "
185 n_pairs = (n_v1 * (n_v1 - 1)) / 2.0;
189 n_pairs = n_v1 * n_v2;
191 pairs = xcalloc (n_pairs, sizeof *pairs);
198 for (i = 0 ; i < n_v1; ++i)
200 vp *pair = &pairs[i];
207 for (i = 0 ; i < n_v1; ++i)
210 for (j = 0 ; j < n_v2; ++j)
212 vp *pair = &pairs[x++];
222 for (i = 0 ; i < n_v1; ++i)
226 for (j = i + 1 ; j < n_v1; ++j)
228 vp *pair = &pairs[x++];
237 else if (lex_match_id (lexer, "VARIABLES"))
239 if (tt.mode == MODE_PAIRED)
241 msg (SE, _("%s subcommand may not be used with %s."), "VARIABLES", "PAIRS");
245 lex_match (lexer, T_EQUALS);
247 if (!parse_variables_const (lexer, dict,
250 PV_NO_DUPLICATE | PV_NUMERIC))
253 else if (lex_match_id (lexer, "MISSING"))
255 lex_match (lexer, T_EQUALS);
256 while (lex_token (lexer) != T_ENDCMD && lex_token (lexer) != T_SLASH)
258 if (lex_match_id (lexer, "INCLUDE"))
260 tt.exclude = MV_SYSTEM;
262 else if (lex_match_id (lexer, "EXCLUDE"))
266 else if (lex_match_id (lexer, "LISTWISE"))
268 tt.missing_type = MISS_LISTWISE;
270 else if (lex_match_id (lexer, "ANALYSIS"))
272 tt.missing_type = MISS_ANALYSIS;
276 lex_error (lexer, NULL);
279 lex_match (lexer, T_COMMA);
282 else if (lex_match_id (lexer, "CRITERIA"))
284 lex_match (lexer, T_EQUALS);
285 if (lex_match_id (lexer, "CIN") || lex_force_match_id (lexer, "CI"))
286 if (lex_force_match (lexer, T_LPAREN))
288 if (!lex_force_num (lexer))
290 tt.confidence = lex_number (lexer);
292 if (! lex_force_match (lexer, T_RPAREN))
298 lex_error (lexer, NULL);
305 msg (SE, _("Exactly one of TESTVAL, GROUPS and PAIRS subcommands "
306 "must be specified."));
310 if (tt.n_vars == 0 && tt.mode != MODE_PAIRED)
312 lex_sbc_missing ("VARIABLES");
318 /* Deal with splits etc */
320 struct casereader *group;
321 struct casegrouper *grouper = casegrouper_create_splits (proc_open (ds), dict);
323 while (casegrouper_get_next_group (grouper, &group))
325 if (tt.mode == MODE_SINGLE)
327 if (tt.missing_type == MISS_LISTWISE)
328 group = casereader_create_filter_missing (group,
332 one_sample_run (&tt, testval, group);
334 else if (tt.mode == MODE_PAIRED)
336 if (tt.missing_type == MISS_LISTWISE)
338 group = casereader_create_filter_missing (group,
342 group = casereader_create_filter_missing (group,
348 paired_run (&tt, n_pairs, pairs, group);
350 else /* tt.mode == MODE_INDEP */
352 if (tt.missing_type == MISS_LISTWISE)
354 group = casereader_create_filter_missing (group,
359 group = casereader_create_filter_missing (group,
366 indep_run (&tt, gvar, cut, &gval0, &gval1, group);
370 ok = casegrouper_destroy (grouper);
371 ok = proc_commit (ds) && ok;
375 if (gval_width != -1)
377 value_destroy (&gval0, gval_width);
378 value_destroy (&gval1, gval_width);
385 return ok ? CMD_SUCCESS : CMD_FAILURE;