2 PSPP - a program for statistical analysis.
3 Copyright (C) 2012, 2013, 2016, 2019 Free Software Foundation, Inc.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include <gsl/gsl_cdf.h>
24 #include "libpspp/assertion.h"
25 #include "libpspp/message.h"
26 #include "libpspp/pool.h"
29 #include "data/dataset.h"
30 #include "data/dictionary.h"
31 #include "data/casegrouper.h"
32 #include "data/casereader.h"
33 #include "data/casewriter.h"
34 #include "data/caseproto.h"
35 #include "data/subcase.h"
38 #include "data/format.h"
40 #include "math/interaction.h"
41 #include "math/box-whisker.h"
42 #include "math/categoricals.h"
43 #include "math/chart-geometry.h"
44 #include "math/histogram.h"
45 #include "math/moments.h"
47 #include "math/sort.h"
48 #include "math/order-stats.h"
49 #include "math/percentiles.h"
50 #include "math/shapiro-wilk.h"
51 #include "math/tukey-hinges.h"
52 #include "math/trimmed-mean.h"
54 #include "output/charts/boxplot.h"
55 #include "output/charts/np-plot.h"
56 #include "output/charts/spreadlevel-plot.h"
57 #include "output/charts/plot-hist.h"
59 #include "language/command.h"
60 #include "language/lexer/lexer.h"
61 #include "language/lexer/value-parser.h"
62 #include "language/lexer/variable-parser.h"
64 #include "output/pivot-table.h"
67 #define _(msgid) gettext (msgid)
68 #define N_(msgid) msgid
71 append_value_name (const struct variable *var, const union value *val, struct string *str)
73 var_append_value_name (var, val, str);
74 if ( var_is_value_missing (var, val, MV_ANY))
75 ds_put_cstr (str, _(" (missing)"));
85 /* Indices for the ex_proto member (below) */
94 #define PLOT_HISTOGRAM 0x1
95 #define PLOT_BOXPLOT 0x2
96 #define PLOT_NPPLOT 0x4
97 #define PLOT_SPREADLEVEL 0x8
103 /* A caseproto used to contain the data subsets under examination,
105 struct caseproto *ex_proto;
108 const struct variable **dep_vars;
111 struct interaction **iacts;
113 enum mv_class dep_excl;
114 enum mv_class fctr_excl;
116 const struct dictionary *dict;
118 struct categoricals *cats;
120 /* how many extremities to display */
129 /* The case index of the ID value (or -1) if not applicable */
135 size_t n_percentiles;
140 enum bp_mode boxplot_mode;
142 const struct variable *id_var;
144 const struct variable *wv;
149 /* The value of this extremity */
152 /* Either the casenumber or the value of the variable specified
153 by the /ID subcommand which corresponds to this extremity */
154 union value identity;
157 struct exploratory_stats
164 /* Most operations need a sorted reader/writer */
165 struct casewriter *sorted_writer;
166 struct casereader *sorted_reader;
168 struct extremity *minima;
169 struct extremity *maxima;
172 Minimum should alway equal mimima[0].val.
173 Likewise, maximum should alway equal maxima[0].val.
174 This redundancy exists as an optimisation effort.
175 Some statistics (eg histogram) require early calculation
181 struct trimmed_mean *trimmed_mean;
182 struct percentile *quartiles[3];
183 struct percentile **percentiles;
184 struct shapiro_wilk *shapiro_wilk;
186 struct tukey_hinges *hinges;
188 /* The data for the NP Plots */
191 struct histogram *histogram;
193 /* The data for the box plots */
194 struct box_whisker *box_whisker;
199 /* The minimum weight */
204 show_boxplot_grouped (const struct examine *cmd, int iact_idx)
208 const struct interaction *iact = cmd->iacts[iact_idx];
209 const size_t n_cats = categoricals_n_count (cmd->cats, iact_idx);
211 for (v = 0; v < cmd->n_dep_vars; ++v)
213 double y_min = DBL_MAX;
214 double y_max = -DBL_MAX;
216 struct boxplot *boxplot;
218 ds_init_empty (&title);
220 if (iact->n_vars > 0)
223 ds_init_empty (&istr);
224 interaction_to_string (iact, &istr);
225 ds_put_format (&title, _("Boxplot of %s vs. %s"),
226 var_to_string (cmd->dep_vars[v]),
231 ds_put_format (&title, _("Boxplot of %s"), var_to_string (cmd->dep_vars[v]));
233 for (grp = 0; grp < n_cats; ++grp)
235 const struct exploratory_stats *es =
236 categoricals_get_user_data_by_category_real (cmd->cats, iact_idx, grp);
238 if ( y_min > es[v].minimum)
239 y_min = es[v].minimum;
241 if ( y_max < es[v].maximum)
242 y_max = es[v].maximum;
245 boxplot = boxplot_create (y_min, y_max, ds_cstr (&title));
249 for (grp = 0; grp < n_cats; ++grp)
254 const struct ccase *c =
255 categoricals_get_case_by_category_real (cmd->cats, iact_idx, grp);
257 struct exploratory_stats *es =
258 categoricals_get_user_data_by_category_real (cmd->cats, iact_idx, grp);
260 ds_init_empty (&label);
261 for (ivar_idx = 0; ivar_idx < iact->n_vars; ++ivar_idx)
264 const struct variable *ivar = iact->vars[ivar_idx];
265 const union value *val = case_data (c, ivar);
268 append_value_name (ivar, val, &l);
269 ds_ltrim (&l, ss_cstr (" "));
271 ds_put_substring (&label, l.ss);
272 if (ivar_idx < iact->n_vars - 1)
273 ds_put_cstr (&label, "; ");
278 boxplot_add_box (boxplot, es[v].box_whisker, ds_cstr (&label));
279 es[v].box_whisker = NULL;
284 boxplot_submit (boxplot);
289 show_boxplot_variabled (const struct examine *cmd, int iact_idx)
292 const struct interaction *iact = cmd->iacts[iact_idx];
293 const size_t n_cats = categoricals_n_count (cmd->cats, iact_idx);
295 for (grp = 0; grp < n_cats; ++grp)
297 struct boxplot *boxplot;
299 double y_min = DBL_MAX;
300 double y_max = -DBL_MAX;
302 const struct ccase *c =
303 categoricals_get_case_by_category_real (cmd->cats, iact_idx, grp);
306 ds_init_empty (&title);
308 for (v = 0; v < cmd->n_dep_vars; ++v)
310 const struct exploratory_stats *es =
311 categoricals_get_user_data_by_category_real (cmd->cats, iact_idx, grp);
313 if ( y_min > es[v].minimum)
314 y_min = es[v].minimum;
316 if ( y_max < es[v].maximum)
317 y_max = es[v].maximum;
320 if ( iact->n_vars == 0)
321 ds_put_format (&title, _("Boxplot"));
326 ds_init_empty (&label);
327 for (ivar_idx = 0; ivar_idx < iact->n_vars; ++ivar_idx)
329 const struct variable *ivar = iact->vars[ivar_idx];
330 const union value *val = case_data (c, ivar);
332 ds_put_cstr (&label, var_to_string (ivar));
333 ds_put_cstr (&label, " = ");
334 append_value_name (ivar, val, &label);
335 ds_put_cstr (&label, "; ");
338 ds_put_format (&title, _("Boxplot of %s"),
344 boxplot = boxplot_create (y_min, y_max, ds_cstr (&title));
348 for (v = 0; v < cmd->n_dep_vars; ++v)
350 struct exploratory_stats *es =
351 categoricals_get_user_data_by_category_real (cmd->cats, iact_idx, grp);
353 boxplot_add_box (boxplot, es[v].box_whisker,
354 var_to_string (cmd->dep_vars[v]));
355 es[v].box_whisker = NULL;
358 boxplot_submit (boxplot);
364 show_npplot (const struct examine *cmd, int iact_idx)
366 const struct interaction *iact = cmd->iacts[iact_idx];
367 const size_t n_cats = categoricals_n_count (cmd->cats, iact_idx);
371 for (v = 0; v < cmd->n_dep_vars; ++v)
374 for (grp = 0; grp < n_cats; ++grp)
376 struct chart_item *npp, *dnpp;
377 struct casereader *reader;
381 const struct ccase *c =
382 categoricals_get_case_by_category_real (cmd->cats,
385 const struct exploratory_stats *es =
386 categoricals_get_user_data_by_category_real (cmd->cats, iact_idx, grp);
389 ds_init_cstr (&label,
390 var_to_string (cmd->dep_vars[v]));
392 if ( iact->n_vars > 0)
394 ds_put_cstr (&label, " (");
395 for (ivar_idx = 0; ivar_idx < iact->n_vars; ++ivar_idx)
397 const struct variable *ivar = iact->vars[ivar_idx];
398 const union value *val = case_data (c, ivar);
400 ds_put_cstr (&label, var_to_string (ivar));
401 ds_put_cstr (&label, " = ");
402 append_value_name (ivar, val, &label);
403 ds_put_cstr (&label, "; ");
406 ds_put_cstr (&label, ")");
410 reader = casewriter_make_reader (np->writer);
413 npp = np_plot_create (np, reader, ds_cstr (&label));
414 dnpp = dnp_plot_create (np, reader, ds_cstr (&label));
416 if (npp == NULL || dnpp == NULL)
418 msg (MW, _("Not creating NP plot because data set is empty."));
419 chart_item_unref (npp);
420 chart_item_unref (dnpp);
424 chart_item_submit (npp);
425 chart_item_submit (dnpp);
427 casereader_destroy (reader);
435 show_spreadlevel (const struct examine *cmd, int iact_idx)
437 const struct interaction *iact = cmd->iacts[iact_idx];
438 const size_t n_cats = categoricals_n_count (cmd->cats, iact_idx);
442 /* Spreadlevel when there are no levels is not useful */
443 if (iact->n_vars == 0)
446 for (v = 0; v < cmd->n_dep_vars; ++v)
449 struct chart_item *sl;
452 ds_init_cstr (&label,
453 var_to_string (cmd->dep_vars[v]));
455 if (iact->n_vars > 0)
457 ds_put_cstr (&label, " (");
458 interaction_to_string (iact, &label);
459 ds_put_cstr (&label, ")");
462 sl = spreadlevel_plot_create (ds_cstr (&label), cmd->sl_power);
464 for (grp = 0; grp < n_cats; ++grp)
466 const struct exploratory_stats *es =
467 categoricals_get_user_data_by_category_real (cmd->cats, iact_idx, grp);
469 double median = percentile_calculate (es[v].quartiles[1], cmd->pc_alg);
471 double iqr = percentile_calculate (es[v].quartiles[2], cmd->pc_alg) -
472 percentile_calculate (es[v].quartiles[0], cmd->pc_alg);
474 spreadlevel_plot_add (sl, iqr, median);
478 msg (MW, _("Not creating spreadlevel chart for %s"), ds_cstr (&label));
480 chart_item_submit (sl);
488 show_histogram (const struct examine *cmd, int iact_idx)
490 const struct interaction *iact = cmd->iacts[iact_idx];
491 const size_t n_cats = categoricals_n_count (cmd->cats, iact_idx);
495 for (v = 0; v < cmd->n_dep_vars; ++v)
498 for (grp = 0; grp < n_cats; ++grp)
502 const struct ccase *c =
503 categoricals_get_case_by_category_real (cmd->cats,
506 const struct exploratory_stats *es =
507 categoricals_get_user_data_by_category_real (cmd->cats, iact_idx, grp);
511 if (es[v].histogram == NULL)
514 ds_init_cstr (&label,
515 var_to_string (cmd->dep_vars[v]));
517 if ( iact->n_vars > 0)
519 ds_put_cstr (&label, " (");
520 for (ivar_idx = 0; ivar_idx < iact->n_vars; ++ivar_idx)
522 const struct variable *ivar = iact->vars[ivar_idx];
523 const union value *val = case_data (c, ivar);
525 ds_put_cstr (&label, var_to_string (ivar));
526 ds_put_cstr (&label, " = ");
527 append_value_name (ivar, val, &label);
528 ds_put_cstr (&label, "; ");
531 ds_put_cstr (&label, ")");
535 moments_calculate (es[v].mom, &n, &mean, &var, NULL, NULL);
538 ( histogram_chart_create (es[v].histogram->gsl_hist,
539 ds_cstr (&label), n, mean,
548 static struct pivot_value *
549 new_value_with_missing_footnote (const struct variable *var,
550 const union value *value,
551 struct pivot_footnote *missing_footnote)
553 struct pivot_value *pv = pivot_value_new_var_value (var, value);
554 if (var_is_value_missing (var, value, MV_USER))
555 pivot_value_add_footnote (pv, missing_footnote);
560 create_interaction_dimensions (struct pivot_table *table,
561 const struct categoricals *cats,
562 const struct interaction *iact,
563 struct pivot_footnote *missing_footnote)
565 for (size_t i = iact->n_vars; i-- > 0; )
567 const struct variable *var = iact->vars[i];
568 struct pivot_dimension *d = pivot_dimension_create__ (
569 table, PIVOT_AXIS_ROW, pivot_value_new_variable (var));
570 d->root->show_label = true;
573 union value *values = categoricals_get_var_values (cats, var, &n);
574 for (size_t j = 0; j < n; j++)
575 pivot_category_create_leaf (
576 d->root, new_value_with_missing_footnote (var, &values[j],
581 static struct pivot_footnote *
582 create_missing_footnote (struct pivot_table *table)
584 return pivot_table_create_footnote (
585 table, pivot_value_new_text (N_("User-missing value.")));
589 percentiles_report (const struct examine *cmd, int iact_idx)
591 struct pivot_table *table = pivot_table_create (N_("Percentiles"));
592 table->omit_empty = true;
594 struct pivot_dimension *percentiles = pivot_dimension_create (
595 table, PIVOT_AXIS_COLUMN, N_("Percentiles"));
596 percentiles->root->show_label = true;
597 for (int i = 0; i < cmd->n_percentiles; ++i)
598 pivot_category_create_leaf (
600 pivot_value_new_user_text_nocopy (xasprintf ("%g", cmd->ptiles[i])));
602 pivot_dimension_create (table, PIVOT_AXIS_ROW, N_("Statistics"),
603 N_("Weighted Average"), N_("Tukey's Hinges"));
605 const struct interaction *iact = cmd->iacts[iact_idx];
606 struct pivot_footnote *missing_footnote = create_missing_footnote (table);
607 create_interaction_dimensions (table, cmd->cats, iact, missing_footnote);
609 struct pivot_dimension *dep_dim = pivot_dimension_create (
610 table, PIVOT_AXIS_ROW, N_("Dependent Variables"));
612 size_t *indexes = xnmalloc (table->n_dimensions, sizeof *indexes);
614 size_t n_cats = categoricals_n_count (cmd->cats, iact_idx);
615 for (size_t v = 0; v < cmd->n_dep_vars; ++v)
617 indexes[table->n_dimensions - 1] = pivot_category_create_leaf (
618 dep_dim->root, pivot_value_new_variable (cmd->dep_vars[v]));
620 for (size_t i = 0; i < n_cats; ++i)
622 for (size_t j = 0; j < iact->n_vars; j++)
624 int idx = categoricals_get_value_index_by_category_real (
625 cmd->cats, iact_idx, i, j);
626 indexes[table->n_dimensions - 2 - j] = idx;
629 const struct exploratory_stats *ess
630 = categoricals_get_user_data_by_category_real (
631 cmd->cats, iact_idx, i);
632 const struct exploratory_stats *es = ess + v;
635 tukey_hinges_calculate (es->hinges, hinges);
637 for (size_t pc_idx = 0; pc_idx < cmd->n_percentiles; ++pc_idx)
642 double value = percentile_calculate (es->percentiles[pc_idx],
644 pivot_table_put (table, indexes, table->n_dimensions,
645 pivot_value_new_number (value));
647 double hinge = (cmd->ptiles[pc_idx] == 25.0 ? hinges[0]
648 : cmd->ptiles[pc_idx] == 50.0 ? hinges[1]
649 : cmd->ptiles[pc_idx] == 75.0 ? hinges[2]
654 pivot_table_put (table, indexes, table->n_dimensions,
655 pivot_value_new_number (hinge));
663 pivot_table_submit (table);
667 normality_report (const struct examine *cmd, int iact_idx)
669 struct pivot_table *table = pivot_table_create (N_("Tests of Normality"));
670 table->omit_empty = true;
672 struct pivot_dimension *test =
673 pivot_dimension_create (table, PIVOT_AXIS_COLUMN, N_("Shapiro-Wilk"),
675 N_("df"), PIVOT_RC_COUNT,
678 test->root->show_label = true;
680 const struct interaction *iact = cmd->iacts[iact_idx];
681 struct pivot_footnote *missing_footnote = create_missing_footnote (table);
682 create_interaction_dimensions (table, cmd->cats, iact, missing_footnote);
684 struct pivot_dimension *dep_dim = pivot_dimension_create (
685 table, PIVOT_AXIS_ROW, N_("Dependent Variables"));
687 size_t *indexes = xnmalloc (table->n_dimensions, sizeof *indexes);
689 size_t n_cats = categoricals_n_count (cmd->cats, iact_idx);
690 for (size_t v = 0; v < cmd->n_dep_vars; ++v)
692 indexes[table->n_dimensions - 1] =
693 pivot_category_create_leaf (dep_dim->root, pivot_value_new_variable (cmd->dep_vars[v]));
695 for (size_t i = 0; i < n_cats; ++i)
699 const struct exploratory_stats *es
700 = categoricals_get_user_data_by_category_real (
701 cmd->cats, iact_idx, i);
703 struct shapiro_wilk *sw = es[v].shapiro_wilk;
708 double w = shapiro_wilk_calculate (sw);
713 pivot_table_put (table, indexes, table->n_dimensions,
714 pivot_value_new_number (w));
717 pivot_table_put (table, indexes, table->n_dimensions,
718 pivot_value_new_number (sw->n));
721 pivot_table_put (table, indexes, table->n_dimensions,
722 pivot_value_new_number (shapiro_wilk_significance (sw->n, w)));
728 pivot_table_submit (table);
733 descriptives_report (const struct examine *cmd, int iact_idx)
735 struct pivot_table *table = pivot_table_create (N_("Descriptives"));
736 table->omit_empty = true;
738 pivot_dimension_create (table, PIVOT_AXIS_COLUMN, N_("Aspect"),
739 N_("Statistic"), N_("Std. Error"));
741 struct pivot_dimension *statistics = pivot_dimension_create (
742 table, PIVOT_AXIS_ROW, N_("Statistics"), N_("Mean"));
743 struct pivot_category *interval = pivot_category_create_group__ (
745 pivot_value_new_text_format (N_("%g%% Confidence Interval for Mean"),
747 pivot_category_create_leaves (interval, N_("Lower Bound"),
749 pivot_category_create_leaves (
750 statistics->root, N_("5% Trimmed Mean"), N_("Median"), N_("Variance"),
751 N_("Std. Deviation"), N_("Minimum"), N_("Maximum"), N_("Range"),
752 N_("Interquartile Range"), N_("Skewness"), N_("Kurtosis"));
754 const struct interaction *iact = cmd->iacts[iact_idx];
755 struct pivot_footnote *missing_footnote = create_missing_footnote (table);
756 create_interaction_dimensions (table, cmd->cats, iact, missing_footnote);
758 struct pivot_dimension *dep_dim = pivot_dimension_create (
759 table, PIVOT_AXIS_ROW, N_("Dependent Variables"));
761 size_t *indexes = xnmalloc (table->n_dimensions, sizeof *indexes);
763 size_t n_cats = categoricals_n_count (cmd->cats, iact_idx);
764 for (size_t v = 0; v < cmd->n_dep_vars; ++v)
766 indexes[table->n_dimensions - 1] = pivot_category_create_leaf (
767 dep_dim->root, pivot_value_new_variable (cmd->dep_vars[v]));
769 for (size_t i = 0; i < n_cats; ++i)
771 for (size_t j = 0; j < iact->n_vars; j++)
773 int idx = categoricals_get_value_index_by_category_real (
774 cmd->cats, iact_idx, i, j);
775 indexes[table->n_dimensions - 2 - j] = idx;
778 const struct exploratory_stats *ess
779 = categoricals_get_user_data_by_category_real (cmd->cats,
781 const struct exploratory_stats *es = ess + v;
783 double m0, m1, m2, m3, m4;
784 moments_calculate (es->mom, &m0, &m1, &m2, &m3, &m4);
785 double tval = gsl_cdf_tdist_Qinv ((1.0 - cmd->conf) / 2.0, m0 - 1.0);
795 { 0, 1, calc_semean (m2, m0) },
796 { 1, 0, m1 - tval * calc_semean (m2, m0) },
797 { 2, 0, m1 + tval * calc_semean (m2, m0) },
798 { 3, 0, trimmed_mean_calculate (es->trimmed_mean) },
799 { 4, 0, percentile_calculate (es->quartiles[1], cmd->pc_alg) },
802 { 7, 0, es->minima[0].val },
803 { 8, 0, es->maxima[0].val },
804 { 9, 0, es->maxima[0].val - es->minima[0].val },
805 { 10, 0, (percentile_calculate (es->quartiles[2], cmd->pc_alg) -
806 percentile_calculate (es->quartiles[0], cmd->pc_alg)) },
808 { 11, 1, calc_seskew (m0) },
810 { 12, 1, calc_sekurt (m0) },
812 for (size_t j = 0; j < sizeof entries / sizeof *entries; j++)
814 const struct entry *e = &entries[j];
815 indexes[0] = e->aspect_idx;
816 indexes[1] = e->stat_idx;
817 pivot_table_put (table, indexes, table->n_dimensions,
818 pivot_value_new_number (e->x));
825 pivot_table_submit (table);
830 extremes_report (const struct examine *cmd, int iact_idx)
832 struct pivot_table *table = pivot_table_create (N_("Extreme Values"));
833 table->omit_empty = true;
835 struct pivot_dimension *statistics = pivot_dimension_create (
836 table, PIVOT_AXIS_COLUMN, N_("Statistics"));
837 pivot_category_create_leaf (statistics->root,
839 ? pivot_value_new_variable (cmd->id_var)
840 : pivot_value_new_text (N_("Case Number"))));
841 pivot_category_create_leaves (statistics->root, N_("Value"));
843 struct pivot_dimension *order = pivot_dimension_create (
844 table, PIVOT_AXIS_ROW, N_("Order"));
845 for (size_t i = 0; i < cmd->disp_extremes; i++)
846 pivot_category_create_leaf (order->root, pivot_value_new_integer (i + 1));
848 pivot_dimension_create (table, PIVOT_AXIS_ROW,
849 /* TRANSLATORS: This is a noun, not an adjective. */
851 N_("Highest"), N_("Lowest"));
853 const struct interaction *iact = cmd->iacts[iact_idx];
854 struct pivot_footnote *missing_footnote = create_missing_footnote (table);
855 create_interaction_dimensions (table, cmd->cats, iact, missing_footnote);
857 struct pivot_dimension *dep_dim = pivot_dimension_create (
858 table, PIVOT_AXIS_ROW, N_("Dependent Variables"));
860 size_t *indexes = xnmalloc (table->n_dimensions, sizeof *indexes);
862 size_t n_cats = categoricals_n_count (cmd->cats, iact_idx);
863 for (size_t v = 0; v < cmd->n_dep_vars; ++v)
865 indexes[table->n_dimensions - 1] = pivot_category_create_leaf (
866 dep_dim->root, pivot_value_new_variable (cmd->dep_vars[v]));
868 for (size_t i = 0; i < n_cats; ++i)
870 for (size_t j = 0; j < iact->n_vars; j++)
872 int idx = categoricals_get_value_index_by_category_real (
873 cmd->cats, iact_idx, i, j);
874 indexes[table->n_dimensions - 2 - j] = idx;
877 const struct exploratory_stats *ess
878 = categoricals_get_user_data_by_category_real (cmd->cats,
880 const struct exploratory_stats *es = ess + v;
882 for (int e = 0 ; e < cmd->disp_extremes; ++e)
886 for (size_t j = 0; j < 2; j++)
888 const struct extremity *extremity
889 = j ? &es->minima[e] : &es->maxima[e];
894 table, indexes, table->n_dimensions,
896 ? new_value_with_missing_footnote (cmd->id_var,
897 &extremity->identity,
899 : pivot_value_new_integer (extremity->identity.f)));
902 union value val = { .f = extremity->val };
904 table, indexes, table->n_dimensions,
905 new_value_with_missing_footnote (cmd->dep_vars[v], &val,
913 pivot_table_submit (table);
918 summary_report (const struct examine *cmd, int iact_idx)
920 struct pivot_table *table = pivot_table_create (
921 N_("Case Processing Summary"));
922 table->omit_empty = true;
923 pivot_table_set_weight_var (table, dict_get_weight (cmd->dict));
925 pivot_dimension_create (table, PIVOT_AXIS_COLUMN, N_("Statistics"),
926 N_("N"), PIVOT_RC_COUNT,
927 N_("Percent"), PIVOT_RC_PERCENT);
928 struct pivot_dimension *cases = pivot_dimension_create (
929 table, PIVOT_AXIS_COLUMN, N_("Cases"), N_("Valid"), N_("Missing"),
931 cases->root->show_label = true;
933 const struct interaction *iact = cmd->iacts[iact_idx];
934 struct pivot_footnote *missing_footnote = create_missing_footnote (table);
935 create_interaction_dimensions (table, cmd->cats, iact, missing_footnote);
937 struct pivot_dimension *dep_dim = pivot_dimension_create (
938 table, PIVOT_AXIS_ROW, N_("Dependent Variables"));
940 size_t *indexes = xnmalloc (table->n_dimensions, sizeof *indexes);
942 size_t n_cats = categoricals_n_count (cmd->cats, iact_idx);
943 for (size_t v = 0; v < cmd->n_dep_vars; ++v)
945 indexes[table->n_dimensions - 1] = pivot_category_create_leaf (
946 dep_dim->root, pivot_value_new_variable (cmd->dep_vars[v]));
948 for (size_t i = 0; i < n_cats; ++i)
950 for (size_t j = 0; j < iact->n_vars; j++)
952 int idx = categoricals_get_value_index_by_category_real (
953 cmd->cats, iact_idx, i, j);
954 indexes[table->n_dimensions - 2 - j] = idx;
957 const struct exploratory_stats *es
958 = categoricals_get_user_data_by_category_real (
959 cmd->cats, iact_idx, i);
961 double total = es[v].missing + es[v].non_missing;
969 { 0, 0, es[v].non_missing },
970 { 1, 0, 100.0 * es[v].non_missing / total },
971 { 0, 1, es[v].missing },
972 { 1, 1, 100.0 * es[v].missing / total },
976 for (size_t j = 0; j < sizeof entries / sizeof *entries; j++)
978 const struct entry *e = &entries[j];
979 indexes[0] = e->stat_idx;
980 indexes[1] = e->case_idx;
981 pivot_table_put (table, indexes, table->n_dimensions,
982 pivot_value_new_number (e->x));
989 pivot_table_submit (table);
992 /* Attempt to parse an interaction from LEXER */
993 static struct interaction *
994 parse_interaction (struct lexer *lexer, struct examine *ex)
996 const struct variable *v = NULL;
997 struct interaction *iact = NULL;
999 if ( lex_match_variable (lexer, ex->dict, &v))
1001 iact = interaction_create (v);
1003 while (lex_match (lexer, T_BY))
1005 if (!lex_match_variable (lexer, ex->dict, &v))
1007 interaction_destroy (iact);
1010 interaction_add_variable (iact, v);
1012 lex_match (lexer, T_COMMA);
1020 create_n (const void *aux1, void *aux2 UNUSED)
1024 const struct examine *examine = aux1;
1025 struct exploratory_stats *es = pool_calloc (examine->pool, examine->n_dep_vars, sizeof (*es));
1026 struct subcase ordering;
1027 subcase_init (&ordering, 0, 0, SC_ASCEND);
1029 for (v = 0; v < examine->n_dep_vars; v++)
1031 es[v].sorted_writer = sort_create_writer (&ordering, examine->ex_proto);
1032 es[v].sorted_reader = NULL;
1034 es[v].mom = moments_create (MOMENT_KURTOSIS);
1035 es[v].cmin = DBL_MAX;
1037 es[v].maximum = -DBL_MAX;
1038 es[v].minimum = DBL_MAX;
1041 subcase_destroy (&ordering);
1046 update_n (const void *aux1, void *aux2 UNUSED, void *user_data,
1047 const struct ccase *c, double weight)
1050 const struct examine *examine = aux1;
1051 struct exploratory_stats *es = user_data;
1053 bool this_case_is_missing = false;
1054 /* LISTWISE missing must be dealt with here */
1055 if (!examine->missing_pw)
1057 for (v = 0; v < examine->n_dep_vars; v++)
1059 const struct variable *var = examine->dep_vars[v];
1061 if (var_is_value_missing (var, case_data (c, var), examine->dep_excl))
1063 es[v].missing += weight;
1064 this_case_is_missing = true;
1069 if (this_case_is_missing)
1072 for (v = 0; v < examine->n_dep_vars; v++)
1074 struct ccase *outcase ;
1075 const struct variable *var = examine->dep_vars[v];
1076 const double x = case_data (c, var)->f;
1078 if (var_is_value_missing (var, case_data (c, var), examine->dep_excl))
1080 es[v].missing += weight;
1084 outcase = case_create (examine->ex_proto);
1086 if (x > es[v].maximum)
1089 if (x < es[v].minimum)
1092 es[v].non_missing += weight;
1094 moments_pass_one (es[v].mom, x, weight);
1096 /* Save the value and the ID to the writer */
1097 assert (examine->id_idx != -1);
1098 case_data_rw_idx (outcase, EX_VAL)->f = x;
1099 value_copy (case_data_rw_idx (outcase, EX_ID),
1100 case_data_idx (c, examine->id_idx), examine->id_width);
1102 case_data_rw_idx (outcase, EX_WT)->f = weight;
1106 if (es[v].cmin > weight)
1107 es[v].cmin = weight;
1109 casewriter_write (es[v].sorted_writer, outcase);
1114 calculate_n (const void *aux1, void *aux2 UNUSED, void *user_data)
1117 const struct examine *examine = aux1;
1118 struct exploratory_stats *es = user_data;
1120 for (v = 0; v < examine->n_dep_vars; v++)
1123 casenumber imin = 0;
1125 struct casereader *reader;
1128 if (examine->plot & PLOT_HISTOGRAM && es[v].non_missing > 0)
1131 double bin_width = fabs (es[v].minimum - es[v].maximum)
1132 / (1 + log2 (es[v].cc))
1136 histogram_create (bin_width, es[v].minimum, es[v].maximum);
1139 es[v].sorted_reader = casewriter_make_reader (es[v].sorted_writer);
1140 es[v].sorted_writer = NULL;
1142 imax = casereader_get_case_cnt (es[v].sorted_reader);
1144 es[v].maxima = pool_calloc (examine->pool, examine->calc_extremes, sizeof (*es[v].maxima));
1145 es[v].minima = pool_calloc (examine->pool, examine->calc_extremes, sizeof (*es[v].minima));
1146 for (i = 0; i < examine->calc_extremes; ++i)
1148 value_init_pool (examine->pool, &es[v].maxima[i].identity, examine->id_width) ;
1149 value_init_pool (examine->pool, &es[v].minima[i].identity, examine->id_width) ;
1153 for (reader = casereader_clone (es[v].sorted_reader);
1154 (c = casereader_read (reader)) != NULL; case_unref (c))
1156 const double val = case_data_idx (c, EX_VAL)->f;
1157 double wt = case_data_idx (c, EX_WT)->f;
1158 wt = var_force_valid_weight (examine->wv, wt, &warn);
1160 moments_pass_two (es[v].mom, val, wt);
1162 if (es[v].histogram)
1163 histogram_add (es[v].histogram, val, wt);
1165 if (imin < examine->calc_extremes)
1168 for (x = imin; x < examine->calc_extremes; ++x)
1170 struct extremity *min = &es[v].minima[x];
1172 value_copy (&min->identity, case_data_idx (c, EX_ID), examine->id_width);
1178 if (imax < examine->calc_extremes)
1182 for (x = imax; x < imax + 1; ++x)
1184 struct extremity *max;
1186 if (x >= examine->calc_extremes)
1189 max = &es[v].maxima[x];
1191 value_copy (&max->identity, case_data_idx (c, EX_ID), examine->id_width);
1195 casereader_destroy (reader);
1197 if (examine->calc_extremes > 0 && es[v].non_missing > 0)
1199 assert (es[v].minima[0].val == es[v].minimum);
1200 assert (es[v].maxima[0].val == es[v].maximum);
1204 const int n_os = 5 + examine->n_percentiles;
1205 struct order_stats **os ;
1206 es[v].percentiles = pool_calloc (examine->pool, examine->n_percentiles, sizeof (*es[v].percentiles));
1208 es[v].trimmed_mean = trimmed_mean_create (es[v].cc, 0.05);
1209 es[v].shapiro_wilk = NULL;
1211 os = xcalloc (n_os, sizeof *os);
1212 os[0] = &es[v].trimmed_mean->parent;
1214 es[v].quartiles[0] = percentile_create (0.25, es[v].cc);
1215 es[v].quartiles[1] = percentile_create (0.5, es[v].cc);
1216 es[v].quartiles[2] = percentile_create (0.75, es[v].cc);
1218 os[1] = &es[v].quartiles[0]->parent;
1219 os[2] = &es[v].quartiles[1]->parent;
1220 os[3] = &es[v].quartiles[2]->parent;
1222 es[v].hinges = tukey_hinges_create (es[v].cc, es[v].cmin);
1223 os[4] = &es[v].hinges->parent;
1225 for (i = 0; i < examine->n_percentiles; ++i)
1227 es[v].percentiles[i] = percentile_create (examine->ptiles[i] / 100.00, es[v].cc);
1228 os[5 + i] = &es[v].percentiles[i]->parent;
1231 order_stats_accumulate_idx (os, n_os,
1232 casereader_clone (es[v].sorted_reader),
1238 if (examine->plot & PLOT_BOXPLOT)
1240 struct order_stats *os;
1242 es[v].box_whisker = box_whisker_create (es[v].hinges,
1243 EX_ID, examine->id_var);
1245 os = &es[v].box_whisker->parent;
1246 order_stats_accumulate_idx (&os, 1,
1247 casereader_clone (es[v].sorted_reader),
1255 moments_calculate (es[v].mom, NULL, &mean, NULL, NULL, NULL);
1257 es[v].shapiro_wilk = shapiro_wilk_create (es[v].non_missing, mean);
1259 if (es[v].shapiro_wilk)
1261 struct order_stats *os = &es[v].shapiro_wilk->parent;
1262 order_stats_accumulate_idx (&os, 1,
1263 casereader_clone (es[v].sorted_reader),
1268 if (examine->plot & PLOT_NPPLOT)
1270 double n, mean, var;
1271 struct order_stats *os;
1273 moments_calculate (es[v].mom, &n, &mean, &var, NULL, NULL);
1275 es[v].np = np_create (n, mean, var);
1277 os = &es[v].np->parent;
1279 order_stats_accumulate_idx (&os, 1,
1280 casereader_clone (es[v].sorted_reader),
1288 cleanup_exploratory_stats (struct examine *cmd)
1291 for (i = 0; i < cmd->n_iacts; ++i)
1294 const size_t n_cats = categoricals_n_count (cmd->cats, i);
1296 for (v = 0; v < cmd->n_dep_vars; ++v)
1299 for (grp = 0; grp < n_cats; ++grp)
1302 const struct exploratory_stats *es =
1303 categoricals_get_user_data_by_category_real (cmd->cats, i, grp);
1305 struct order_stats *os = &es[v].hinges->parent;
1306 struct statistic *stat = &os->parent;
1307 stat->destroy (stat);
1309 for (q = 0; q < 3 ; q++)
1311 os = &es[v].quartiles[q]->parent;
1313 stat->destroy (stat);
1316 for (q = 0; q < cmd->n_percentiles ; q++)
1318 os = &es[v].percentiles[q]->parent;
1320 stat->destroy (stat);
1323 os = &es[v].trimmed_mean->parent;
1325 stat->destroy (stat);
1327 os = &es[v].np->parent;
1331 stat->destroy (stat);
1334 statistic_destroy (&es[v].histogram->parent);
1335 moments_destroy (es[v].mom);
1337 if (es[v].box_whisker)
1339 stat = &es[v].box_whisker->parent.parent;
1340 stat->destroy (stat);
1343 casereader_destroy (es[v].sorted_reader);
1351 run_examine (struct examine *cmd, struct casereader *input)
1355 struct casereader *reader;
1357 struct payload payload;
1358 payload.create = create_n;
1359 payload.update = update_n;
1360 payload.calculate = calculate_n;
1361 payload.destroy = NULL;
1363 cmd->wv = dict_get_weight (cmd->dict);
1366 = categoricals_create (cmd->iacts, cmd->n_iacts, cmd->wv, cmd->fctr_excl);
1368 categoricals_set_payload (cmd->cats, &payload, cmd, NULL);
1370 if (cmd->id_var == NULL)
1372 struct ccase *c = casereader_peek (input, 0);
1374 cmd->id_idx = case_get_value_cnt (c);
1375 input = casereader_create_arithmetic_sequence (input, 1.0, 1.0);
1380 for (reader = input;
1381 (c = casereader_read (reader)) != NULL; case_unref (c))
1383 categoricals_update (cmd->cats, c);
1385 casereader_destroy (reader);
1386 categoricals_done (cmd->cats);
1388 for (i = 0; i < cmd->n_iacts; ++i)
1390 summary_report (cmd, i);
1392 const size_t n_cats = categoricals_n_count (cmd->cats, i);
1396 if (cmd->disp_extremes > 0)
1397 extremes_report (cmd, i);
1399 if (cmd->n_percentiles > 0)
1400 percentiles_report (cmd, i);
1402 if (cmd->plot & PLOT_BOXPLOT)
1404 switch (cmd->boxplot_mode)
1407 show_boxplot_grouped (cmd, i);
1410 show_boxplot_variabled (cmd, i);
1418 if (cmd->plot & PLOT_HISTOGRAM)
1419 show_histogram (cmd, i);
1421 if (cmd->plot & PLOT_NPPLOT)
1422 show_npplot (cmd, i);
1424 if (cmd->plot & PLOT_SPREADLEVEL)
1425 show_spreadlevel (cmd, i);
1427 if (cmd->descriptives)
1428 descriptives_report (cmd, i);
1431 normality_report (cmd, i);
1434 cleanup_exploratory_stats (cmd);
1435 categoricals_destroy (cmd->cats);
1440 cmd_examine (struct lexer *lexer, struct dataset *ds)
1443 bool nototals_seen = false;
1444 bool totals_seen = false;
1446 struct interaction **iacts_mem = NULL;
1447 struct examine examine;
1448 bool percentiles_seen = false;
1450 examine.missing_pw = false;
1451 examine.disp_extremes = 0;
1452 examine.calc_extremes = 0;
1453 examine.descriptives = false;
1454 examine.conf = 0.95;
1455 examine.pc_alg = PC_HAVERAGE;
1456 examine.ptiles = NULL;
1457 examine.n_percentiles = 0;
1458 examine.id_idx = -1;
1459 examine.id_width = 0;
1460 examine.id_var = NULL;
1461 examine.boxplot_mode = BP_GROUPS;
1463 examine.ex_proto = caseproto_create ();
1465 examine.pool = pool_create ();
1467 /* Allocate space for the first interaction.
1468 This is interaction is an empty one (for the totals).
1469 If no totals are requested, we will simply ignore this
1472 examine.n_iacts = 1;
1473 examine.iacts = iacts_mem = pool_zalloc (examine.pool, sizeof (struct interaction *));
1474 examine.iacts[0] = interaction_create (NULL);
1476 examine.dep_excl = MV_ANY;
1477 examine.fctr_excl = MV_ANY;
1479 examine.sl_power = 0;
1480 examine.dep_vars = NULL;
1481 examine.n_dep_vars = 0;
1482 examine.dict = dataset_dict (ds);
1484 /* Accept an optional, completely pointless "/VARIABLES=" */
1485 lex_match (lexer, T_SLASH);
1486 if (lex_match_id (lexer, "VARIABLES"))
1488 if (! lex_force_match (lexer, T_EQUALS) )
1492 if (!parse_variables_const (lexer, examine.dict,
1493 &examine.dep_vars, &examine.n_dep_vars,
1494 PV_NO_DUPLICATE | PV_NUMERIC))
1497 if (lex_match (lexer, T_BY))
1499 struct interaction *iact = NULL;
1502 iact = parse_interaction (lexer, &examine);
1507 pool_nrealloc (examine.pool, iacts_mem,
1509 sizeof (*iacts_mem));
1511 iacts_mem[examine.n_iacts - 1] = iact;
1518 while (lex_token (lexer) != T_ENDCMD)
1520 lex_match (lexer, T_SLASH);
1522 if (lex_match_id (lexer, "STATISTICS"))
1524 lex_match (lexer, T_EQUALS);
1526 while (lex_token (lexer) != T_ENDCMD
1527 && lex_token (lexer) != T_SLASH)
1529 if (lex_match_id (lexer, "DESCRIPTIVES"))
1531 examine.descriptives = true;
1533 else if (lex_match_id (lexer, "EXTREME"))
1536 if (lex_match (lexer, T_LPAREN))
1538 if (!lex_force_int (lexer))
1540 extr = lex_integer (lexer);
1544 msg (MW, _("%s may not be negative. Using default value (%g)."), "EXTREME", 5.0);
1549 if (! lex_force_match (lexer, T_RPAREN))
1552 examine.disp_extremes = extr;
1554 else if (lex_match_id (lexer, "NONE"))
1557 else if (lex_match (lexer, T_ALL))
1559 if (examine.disp_extremes == 0)
1560 examine.disp_extremes = 5;
1564 lex_error (lexer, NULL);
1569 else if (lex_match_id (lexer, "PERCENTILES"))
1571 percentiles_seen = true;
1572 if (lex_match (lexer, T_LPAREN))
1574 while (lex_is_number (lexer))
1576 double p = lex_number (lexer);
1578 if ( p <= 0 || p >= 100.0)
1581 _("Percentiles must lie in the range (0, 100)"));
1585 examine.n_percentiles++;
1587 xrealloc (examine.ptiles,
1588 sizeof (*examine.ptiles) *
1589 examine.n_percentiles);
1591 examine.ptiles[examine.n_percentiles - 1] = p;
1594 lex_match (lexer, T_COMMA);
1596 if (!lex_force_match (lexer, T_RPAREN))
1600 lex_match (lexer, T_EQUALS);
1602 while (lex_token (lexer) != T_ENDCMD
1603 && lex_token (lexer) != T_SLASH)
1605 if (lex_match_id (lexer, "HAVERAGE"))
1607 examine.pc_alg = PC_HAVERAGE;
1609 else if (lex_match_id (lexer, "WAVERAGE"))
1611 examine.pc_alg = PC_WAVERAGE;
1613 else if (lex_match_id (lexer, "ROUND"))
1615 examine.pc_alg = PC_ROUND;
1617 else if (lex_match_id (lexer, "EMPIRICAL"))
1619 examine.pc_alg = PC_EMPIRICAL;
1621 else if (lex_match_id (lexer, "AEMPIRICAL"))
1623 examine.pc_alg = PC_AEMPIRICAL;
1625 else if (lex_match_id (lexer, "NONE"))
1627 examine.pc_alg = PC_NONE;
1631 lex_error (lexer, NULL);
1636 else if (lex_match_id (lexer, "TOTAL"))
1640 else if (lex_match_id (lexer, "NOTOTAL"))
1642 nototals_seen = true;
1644 else if (lex_match_id (lexer, "MISSING"))
1646 lex_match (lexer, T_EQUALS);
1648 while (lex_token (lexer) != T_ENDCMD
1649 && lex_token (lexer) != T_SLASH)
1651 if (lex_match_id (lexer, "LISTWISE"))
1653 examine.missing_pw = false;
1655 else if (lex_match_id (lexer, "PAIRWISE"))
1657 examine.missing_pw = true;
1659 else if (lex_match_id (lexer, "EXCLUDE"))
1661 examine.dep_excl = MV_ANY;
1663 else if (lex_match_id (lexer, "INCLUDE"))
1665 examine.dep_excl = MV_SYSTEM;
1667 else if (lex_match_id (lexer, "REPORT"))
1669 examine.fctr_excl = MV_NEVER;
1671 else if (lex_match_id (lexer, "NOREPORT"))
1673 examine.fctr_excl = MV_ANY;
1677 lex_error (lexer, NULL);
1682 else if (lex_match_id (lexer, "COMPARE"))
1684 lex_match (lexer, T_EQUALS);
1685 if (lex_match_id (lexer, "VARIABLES"))
1687 examine.boxplot_mode = BP_VARIABLES;
1689 else if (lex_match_id (lexer, "GROUPS"))
1691 examine.boxplot_mode = BP_GROUPS;
1695 lex_error (lexer, NULL);
1699 else if (lex_match_id (lexer, "PLOT"))
1701 lex_match (lexer, T_EQUALS);
1703 while (lex_token (lexer) != T_ENDCMD
1704 && lex_token (lexer) != T_SLASH)
1706 if (lex_match_id (lexer, "BOXPLOT"))
1708 examine.plot |= PLOT_BOXPLOT;
1710 else if (lex_match_id (lexer, "NPPLOT"))
1712 examine.plot |= PLOT_NPPLOT;
1714 else if (lex_match_id (lexer, "HISTOGRAM"))
1716 examine.plot |= PLOT_HISTOGRAM;
1718 else if (lex_match_id (lexer, "SPREADLEVEL"))
1720 examine.plot |= PLOT_SPREADLEVEL;
1721 examine.sl_power = 0;
1722 if (lex_match (lexer, T_LPAREN) && lex_force_int (lexer))
1724 examine.sl_power = lex_integer (lexer);
1727 if (! lex_force_match (lexer, T_RPAREN))
1731 else if (lex_match_id (lexer, "NONE"))
1735 else if (lex_match (lexer, T_ALL))
1741 lex_error (lexer, NULL);
1744 lex_match (lexer, T_COMMA);
1747 else if (lex_match_id (lexer, "CINTERVAL"))
1749 if ( !lex_force_num (lexer))
1752 examine.conf = lex_number (lexer);
1755 else if (lex_match_id (lexer, "ID"))
1757 lex_match (lexer, T_EQUALS);
1759 examine.id_var = parse_variable_const (lexer, examine.dict);
1763 lex_error (lexer, NULL);
1769 if ( totals_seen && nototals_seen)
1771 msg (SE, _("%s and %s are mutually exclusive"), "TOTAL", "NOTOTAL");
1775 /* If totals have been requested or if there are no factors
1776 in this analysis, then the totals need to be included. */
1777 if ( !nototals_seen || examine.n_iacts == 1)
1779 examine.iacts = &iacts_mem[0];
1784 examine.iacts = &iacts_mem[1];
1785 interaction_destroy (iacts_mem[0]);
1789 if ( examine.id_var )
1791 examine.id_idx = var_get_case_index (examine.id_var);
1792 examine.id_width = var_get_width (examine.id_var);
1795 examine.ex_proto = caseproto_add_width (examine.ex_proto, 0); /* value */
1796 examine.ex_proto = caseproto_add_width (examine.ex_proto, examine.id_width); /* id */
1797 examine.ex_proto = caseproto_add_width (examine.ex_proto, 0); /* weight */
1800 if (examine.disp_extremes > 0)
1802 examine.calc_extremes = examine.disp_extremes;
1805 if (examine.descriptives && examine.calc_extremes == 0)
1807 /* Descriptives always displays the max and min */
1808 examine.calc_extremes = 1;
1811 if (percentiles_seen && examine.n_percentiles == 0)
1813 examine.n_percentiles = 7;
1814 examine.ptiles = xcalloc (examine.n_percentiles,
1815 sizeof (*examine.ptiles));
1817 examine.ptiles[0] = 5;
1818 examine.ptiles[1] = 10;
1819 examine.ptiles[2] = 25;
1820 examine.ptiles[3] = 50;
1821 examine.ptiles[4] = 75;
1822 examine.ptiles[5] = 90;
1823 examine.ptiles[6] = 95;
1826 assert (examine.calc_extremes >= examine.disp_extremes);
1828 struct casegrouper *grouper;
1829 struct casereader *group;
1832 grouper = casegrouper_create_splits (proc_open (ds), examine.dict);
1833 while (casegrouper_get_next_group (grouper, &group))
1834 run_examine (&examine, group);
1835 ok = casegrouper_destroy (grouper);
1836 ok = proc_commit (ds) && ok;
1839 caseproto_unref (examine.ex_proto);
1841 for (i = 0; i < examine.n_iacts; ++i)
1842 interaction_destroy (examine.iacts[i]);
1843 free (examine.ptiles);
1844 free (examine.dep_vars);
1845 pool_destroy (examine.pool);
1850 caseproto_unref (examine.ex_proto);
1851 examine.iacts = iacts_mem;
1852 for (i = 0; i < examine.n_iacts; ++i)
1853 interaction_destroy (examine.iacts[i]);
1854 free (examine.dep_vars);
1855 free (examine.ptiles);
1856 pool_destroy (examine.pool);