/* PSPP - a program for statistical analysis.
- Copyright (C) 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2010, 2011, 2012 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
#include <gsl/gsl_cdf.h>
#include <gsl/gsl_matrix.h>
+#include <gsl/gsl_combination.h>
#include <math.h>
#include "data/case.h"
#include "data/casegrouper.h"
#include "data/casereader.h"
+#include "data/dataset.h"
#include "data/dictionary.h"
#include "data/format.h"
-#include "data/procedure.h"
#include "data/value.h"
#include "language/command.h"
#include "language/dictionary/split-file.h"
#include "language/lexer/lexer.h"
#include "language/lexer/value-parser.h"
#include "language/lexer/variable-parser.h"
+#include "libpspp/assertion.h"
#include "libpspp/ll.h"
#include "libpspp/message.h"
#include "libpspp/misc.h"
#include "linreg/sweep.h"
#include "math/categoricals.h"
#include "math/covariance.h"
+#include "math/interaction.h"
#include "math/moments.h"
-#include "output/tab.h"
+#include "output/pivot-table.h"
#include "gettext.h"
+#define N_(msgid) msgid
#define _(msgid) gettext (msgid)
struct glm_spec
-{
- size_t n_dep_vars;
- const struct variable **dep_vars;
+ {
+ const struct variable **dep_vars;
+ size_t n_dep_vars;
+
+ const struct variable **factor_vars;
+ size_t n_factor_vars;
+
+ struct interaction **interactions;
+ size_t n_interactions;
+
+ enum mv_class exclude;
+
+ const struct variable *wv; /* The weight variable */
- size_t n_factor_vars;
- const struct variable **factor_vars;
+ const struct dictionary *dict;
- enum mv_class exclude;
+ int ss_type;
+ bool intercept;
- /* The weight variable */
- const struct variable *wv;
+ double alpha;
- bool intercept;
-};
+ bool dump_coding;
+ };
struct glm_workspace
+ {
+ double total_ssq;
+ struct moments *totals;
+
+ struct categoricals *cats;
+
+ /*
+ Sums of squares due to different variables. Element 0 is the SSE
+ for the entire model. For i > 0, element i is the SS due to
+ variable i.
+ */
+ gsl_vector *ssq;
+ };
+
+/* Default design: all possible interactions */
+static void
+design_full (struct glm_spec *glm)
{
- double total_ssq;
- struct moments *totals;
-};
+ size_t n = (1 << glm->n_factor_vars) - 1;
+ glm->interactions = xnmalloc (n, sizeof *glm->interactions);
-static void output_glm (const struct glm_spec *, const struct glm_workspace *ws);
-static void run_glm (const struct glm_spec *cmd, struct casereader *input, const struct dataset *ds);
+ /* All subsets, with exception of the empty set, of [0, glm->n_factor_vars) */
+ for (size_t sz = 1; sz <= glm->n_factor_vars; ++sz)
+ {
+ gsl_combination *c = gsl_combination_calloc (glm->n_factor_vars, sz);
+
+ do
+ {
+ struct interaction *iact = interaction_create (NULL);
+ for (int e = 0; e < gsl_combination_k (c); ++e)
+ interaction_add_variable (
+ iact, glm->factor_vars [gsl_combination_get (c, e)]);
+
+ glm->interactions[glm->n_interactions++] = iact;
+ }
+ while (gsl_combination_next (c) == GSL_SUCCESS);
+
+ gsl_combination_free (c);
+ }
+ assert (glm->n_interactions == n);
+}
+
+static void output_glm (const struct glm_spec *,
+ const struct glm_workspace *ws);
+static void run_glm (struct glm_spec *cmd, struct casereader *input,
+ const struct dataset *ds);
+
+static struct interaction *parse_design_term (struct lexer *,
+ const struct dictionary *);
int
cmd_glm (struct lexer *lexer, struct dataset *ds)
{
- const struct dictionary *dict = dataset_dict (ds);
- struct glm_spec glm ;
- glm.n_dep_vars = 0;
- glm.n_factor_vars = 0;
- glm.dep_vars = NULL;
- glm.factor_vars = NULL;
- glm.exclude = MV_ANY;
- glm.intercept = true;
- glm.wv = dict_get_weight (dict);
-
-
- if (!parse_variables_const (lexer, dict,
+ struct const_var_set *factors = NULL;
+ bool design = false;
+ struct dictionary *dict = dataset_dict (ds);
+ struct glm_spec glm = {
+ .dict = dict,
+ .exclude = MV_ANY,
+ .intercept = true,
+ .wv = dict_get_weight (dict),
+ .alpha = 0.05,
+ .ss_type = 3,
+ };
+
+ int dep_vars_start = lex_ofs (lexer);
+ if (!parse_variables_const (lexer, glm.dict,
&glm.dep_vars, &glm.n_dep_vars,
PV_NO_DUPLICATE | PV_NUMERIC))
goto error;
+ int dep_vars_end = lex_ofs (lexer) - 1;
- lex_force_match (lexer, T_BY);
+ if (!lex_force_match (lexer, T_BY))
+ goto error;
- if (!parse_variables_const (lexer, dict,
+ if (!parse_variables_const (lexer, glm.dict,
&glm.factor_vars, &glm.n_factor_vars,
PV_NO_DUPLICATE | PV_NUMERIC))
goto error;
- if ( glm.n_dep_vars > 1)
+ if (glm.n_dep_vars > 1)
{
- msg (ME, _("Multivariate analysis is not yet implemented"));
- return CMD_FAILURE;
+ lex_ofs_error (lexer, dep_vars_start, dep_vars_end,
+ _("Multivariate analysis is not yet implemented."));
+ goto error;
}
- struct const_var_set *factors = const_var_set_create_from_array (glm.factor_vars, glm.n_factor_vars);
-
+ factors = const_var_set_create_from_array (glm.factor_vars, glm.n_factor_vars);
+ size_t allocated_interactions = 0;
while (lex_token (lexer) != T_ENDCMD)
{
lex_match (lexer, T_SLASH);
if (lex_match_id (lexer, "MISSING"))
- {
- lex_match (lexer, T_EQUALS);
- while (lex_token (lexer) != T_ENDCMD && lex_token (lexer) != T_SLASH)
- {
+ {
+ lex_match (lexer, T_EQUALS);
+ while (lex_token (lexer) != T_ENDCMD
+ && lex_token (lexer) != T_SLASH)
+ {
if (lex_match_id (lexer, "INCLUDE"))
- {
- glm.exclude = MV_SYSTEM;
- }
+ glm.exclude = MV_SYSTEM;
else if (lex_match_id (lexer, "EXCLUDE"))
- {
- glm.exclude = MV_ANY;
- }
+ glm.exclude = MV_ANY;
else
{
- lex_error (lexer, NULL);
+ lex_error_expecting (lexer, "INCLUDE", "EXCLUDE");
goto error;
}
}
}
else if (lex_match_id (lexer, "INTERCEPT"))
- {
- lex_match (lexer, T_EQUALS);
- while (lex_token (lexer) != T_ENDCMD && lex_token (lexer) != T_SLASH)
- {
+ {
+ lex_match (lexer, T_EQUALS);
+ while (lex_token (lexer) != T_ENDCMD
+ && lex_token (lexer) != T_SLASH)
+ {
if (lex_match_id (lexer, "INCLUDE"))
- {
- glm.intercept = true;
- }
+ glm.intercept = true;
else if (lex_match_id (lexer, "EXCLUDE"))
- {
- glm.intercept = false;
- }
+ glm.intercept = false;
else
{
- lex_error (lexer, NULL);
+ lex_error_expecting (lexer, "INCLUDE", "EXCLUDE");
goto error;
}
}
}
+ else if (lex_match_id (lexer, "CRITERIA"))
+ {
+ lex_match (lexer, T_EQUALS);
+ if (!lex_force_match_phrase (lexer, "ALPHA(")
+ || !lex_force_num (lexer))
+ goto error;
+ glm.alpha = lex_number (lexer);
+ lex_get (lexer);
+ if (!lex_force_match (lexer, T_RPAREN))
+ goto error;
+ }
+ else if (lex_match_id (lexer, "METHOD"))
+ {
+ lex_match (lexer, T_EQUALS);
+ if (!lex_force_match_phrase (lexer, "SSTYPE(")
+ || !lex_force_int_range (lexer, "SSTYPE", 1, 3))
+ goto error;
+
+ glm.ss_type = lex_integer (lexer);
+ lex_get (lexer);
+
+ if (!lex_force_match (lexer, T_RPAREN))
+ goto error;
+ }
else if (lex_match_id (lexer, "DESIGN"))
- {
- size_t n_des;
- const struct variable **des;
- lex_match (lexer, T_EQUALS);
+ {
+ lex_match (lexer, T_EQUALS);
- parse_const_var_set_vars (lexer, factors, &des, &n_des, 0);
+ do
+ {
+ struct interaction *iact = parse_design_term (lexer, glm.dict);
+ if (!iact)
+ goto error;
+
+ if (glm.n_interactions >= allocated_interactions)
+ glm.interactions = x2nrealloc (glm.interactions,
+ &allocated_interactions,
+ sizeof *glm.interactions);
+ glm.interactions[glm.n_interactions++] = iact;
+
+ lex_match (lexer, T_COMMA);
+ }
+ while (lex_token (lexer) != T_ENDCMD && lex_token (lexer) != T_SLASH);
+
+ if (glm.n_interactions > 0)
+ design = true;
+ }
+ else if (lex_match_id (lexer, "SHOWCODES"))
+ {
+ /* Undocumented debug option */
+ glm.dump_coding = true;
}
else
{
- lex_error (lexer, NULL);
+ lex_error_expecting (lexer, "MISSING", "INTERCEPT", "CRITERIA",
+ "METHOD", "DESIGN");
goto error;
}
}
+ if (!design)
+ design_full (&glm);
- {
- struct casegrouper *grouper;
- struct casereader *group;
- bool ok;
-
- grouper = casegrouper_create_splits (proc_open (ds), dict);
- while (casegrouper_get_next_group (grouper, &group))
- run_glm (&glm, group, ds);
- ok = casegrouper_destroy (grouper);
- ok = proc_commit (ds) && ok;
- }
+ struct casegrouper *grouper = casegrouper_create_splits (proc_open (ds), glm.dict);
+ struct casereader *group;
+ while (casegrouper_get_next_group (grouper, &group))
+ run_glm (&glm, group, ds);
+ bool ok = casegrouper_destroy (grouper);
+ ok = proc_commit (ds) && ok;
+
+ const_var_set_destroy (factors);
+ free (glm.factor_vars);
+ for (size_t i = 0; i < glm.n_interactions; ++i)
+ interaction_destroy (glm.interactions[i]);
+
+ free (glm.interactions);
+ free (glm.dep_vars);
return CMD_SUCCESS;
- error:
+error:
+ const_var_set_destroy (factors);
+ free (glm.factor_vars);
+ for (size_t i = 0; i < glm.n_interactions; ++i)
+ interaction_destroy (glm.interactions[i]);
+
+ free (glm.interactions);
+ free (glm.dep_vars);
+
return CMD_FAILURE;
}
-static void dump_matrix (const gsl_matrix *m);
+static inline bool
+not_dropped (size_t j, const bool *ff)
+{
+ return !ff[j];
+}
static void
-run_glm (const struct glm_spec *cmd, struct casereader *input, const struct dataset *ds)
+fill_submatrix (const gsl_matrix * cov, gsl_matrix * submatrix, bool *dropped_f)
{
- int v;
- struct taint *taint;
- struct dictionary *dict = dataset_dict (ds);
- struct casereader *reader;
- struct ccase *c;
+ size_t i;
+ size_t j;
+ size_t n = 0;
+ size_t m = 0;
- struct glm_workspace ws;
+ for (i = 0; i < cov->size1; i++)
+ {
+ if (not_dropped (i, dropped_f))
+ {
+ m = 0;
+ for (j = 0; j < cov->size2; j++)
+ {
+ if (not_dropped (j, dropped_f))
+ {
+ gsl_matrix_set (submatrix, n, m,
+ gsl_matrix_get (cov, i, j));
+ m++;
+ }
+ }
+ n++;
+ }
+ }
+}
- struct categoricals *cats = categoricals_create (cmd->factor_vars, cmd->n_factor_vars,
- cmd->wv, cmd->exclude,
- NULL, NULL,
- NULL, NULL);
-
- struct covariance *cov = covariance_2pass_create (cmd->n_dep_vars, cmd->dep_vars,
- cats,
- cmd->wv, cmd->exclude);
+/*
+ Type 1 sums of squares.
+ Populate SSQ with the Type 1 sums of squares according to COV
+ */
+static void
+ssq_type1 (struct covariance *cov, gsl_vector *ssq, const struct glm_spec *cmd)
+{
+ const gsl_matrix *cm = covariance_calculate_unnormalized (cov);
+ size_t i;
+ size_t k;
+ bool *model_dropped = XCALLOC (covariance_dim (cov), bool);
+ bool *submodel_dropped = XCALLOC (covariance_dim (cov), bool);
+ const struct categoricals *cats = covariance_get_categoricals (cov);
+
+ size_t n_dropped_model = 0;
+ size_t n_dropped_submodel = 0;
- c = casereader_peek (input, 0);
- if (c == NULL)
+ for (i = cmd->n_dep_vars; i < covariance_dim (cov); i++)
{
- casereader_destroy (input);
- return;
+ n_dropped_model++;
+ n_dropped_submodel++;
+ model_dropped[i] = true;
+ submodel_dropped[i] = true;
}
- output_split_file_values (ds, c);
- case_unref (c);
- taint = taint_clone (casereader_get_taint (input));
+ for (k = 0; k < cmd->n_interactions; k++)
+ {
+ gsl_matrix *model_cov = NULL;
+ gsl_matrix *submodel_cov = NULL;
+
+ n_dropped_submodel = n_dropped_model;
+ for (i = cmd->n_dep_vars; i < covariance_dim (cov); i++)
+ submodel_dropped[i] = model_dropped[i];
- ws.totals = moments_create (MOMENT_VARIANCE);
+ for (i = cmd->n_dep_vars; i < covariance_dim (cov); i++)
+ {
+ const struct interaction * x =
+ categoricals_get_interaction_by_subscript (cats, i - cmd->n_dep_vars);
+
+ if (x == cmd->interactions [k])
+ {
+ model_dropped[i] = false;
+ n_dropped_model--;
+ }
+ }
+
+ model_cov = gsl_matrix_alloc (cm->size1 - n_dropped_model, cm->size2 - n_dropped_model);
+ submodel_cov = gsl_matrix_alloc (cm->size1 - n_dropped_submodel, cm->size2 - n_dropped_submodel);
+
+ fill_submatrix (cm, model_cov, model_dropped);
+ fill_submatrix (cm, submodel_cov, submodel_dropped);
+
+ reg_sweep (model_cov, 0);
+ reg_sweep (submodel_cov, 0);
+
+ gsl_vector_set (ssq, k + 1,
+ gsl_matrix_get (submodel_cov, 0, 0) - gsl_matrix_get (model_cov, 0, 0)
+ );
+
+ gsl_matrix_free (model_cov);
+ gsl_matrix_free (submodel_cov);
+ }
+
+ free (model_dropped);
+ free (submodel_dropped);
+}
+
+/*
+ Type 2 sums of squares.
+ Populate SSQ with the Type 2 sums of squares according to COV
+ */
+static void
+ssq_type2 (struct covariance *cov, gsl_vector *ssq, const struct glm_spec *cmd)
+{
+ const gsl_matrix *cm = covariance_calculate_unnormalized (cov);
+ bool *model_dropped = XCALLOC (covariance_dim (cov), bool);
+ bool *submodel_dropped = XCALLOC (covariance_dim (cov), bool);
+ const struct categoricals *cats = covariance_get_categoricals (cov);
+
+ for (size_t k = 0; k < cmd->n_interactions; k++)
+ {
+ gsl_matrix *model_cov = NULL;
+ gsl_matrix *submodel_cov = NULL;
+ size_t n_dropped_model = 0;
+ size_t n_dropped_submodel = 0;
+ for (size_t i = cmd->n_dep_vars; i < covariance_dim (cov); i++)
+ {
+ const struct interaction * x =
+ categoricals_get_interaction_by_subscript (cats, i - cmd->n_dep_vars);
+
+ model_dropped[i] = false;
+ submodel_dropped[i] = false;
+ if (interaction_is_subset (cmd->interactions [k], x))
+ {
+ assert (n_dropped_submodel < covariance_dim (cov));
+ n_dropped_submodel++;
+ submodel_dropped[i] = true;
+
+ if (cmd->interactions [k]->n_vars < x->n_vars)
+ {
+ assert (n_dropped_model < covariance_dim (cov));
+ n_dropped_model++;
+ model_dropped[i] = true;
+ }
+ }
+ }
+
+ model_cov = gsl_matrix_alloc (cm->size1 - n_dropped_model, cm->size2 - n_dropped_model);
+ submodel_cov = gsl_matrix_alloc (cm->size1 - n_dropped_submodel, cm->size2 - n_dropped_submodel);
+
+ fill_submatrix (cm, model_cov, model_dropped);
+ fill_submatrix (cm, submodel_cov, submodel_dropped);
+
+ reg_sweep (model_cov, 0);
+ reg_sweep (submodel_cov, 0);
+
+ gsl_vector_set (ssq, k + 1,
+ gsl_matrix_get (submodel_cov, 0, 0) - gsl_matrix_get (model_cov, 0, 0)
+ );
+
+ gsl_matrix_free (model_cov);
+ gsl_matrix_free (submodel_cov);
+ }
+
+ free (model_dropped);
+ free (submodel_dropped);
+}
+
+/*
+ Type 3 sums of squares.
+ Populate SSQ with the Type 2 sums of squares according to COV
+ */
+static void
+ssq_type3 (struct covariance *cov, gsl_vector *ssq, const struct glm_spec *cmd)
+{
+ const gsl_matrix *cm = covariance_calculate_unnormalized (cov);
+ bool *model_dropped = XCALLOC (covariance_dim (cov), bool);
+ bool *submodel_dropped = XCALLOC (covariance_dim (cov), bool);
+ const struct categoricals *cats = covariance_get_categoricals (cov);
+
+ gsl_matrix *submodel_cov = gsl_matrix_alloc (cm->size1, cm->size2);
+ fill_submatrix (cm, submodel_cov, submodel_dropped);
+ reg_sweep (submodel_cov, 0);
+ double ss0 = gsl_matrix_get (submodel_cov, 0, 0);
+ gsl_matrix_free (submodel_cov);
+ free (submodel_dropped);
+
+ for (size_t k = 0; k < cmd->n_interactions; k++)
+ {
+ size_t n_dropped_model = 0;
+ for (size_t i = cmd->n_dep_vars; i < covariance_dim (cov); i++)
+ {
+ const struct interaction * x =
+ categoricals_get_interaction_by_subscript (cats, i - cmd->n_dep_vars);
+
+ model_dropped[i] = false;
+
+ if (cmd->interactions [k] == x)
+ {
+ assert (n_dropped_model < covariance_dim (cov));
+ n_dropped_model++;
+ model_dropped[i] = true;
+ }
+ }
+
+ gsl_matrix *model_cov = gsl_matrix_alloc (cm->size1 - n_dropped_model,
+ cm->size2 - n_dropped_model);
+ fill_submatrix (cm, model_cov, model_dropped);
+
+ reg_sweep (model_cov, 0);
+
+ gsl_vector_set (ssq, k + 1, gsl_matrix_get (model_cov, 0, 0) - ss0);
+
+ gsl_matrix_free (model_cov);
+ }
+ free (model_dropped);
+}
+
+static void
+run_glm (struct glm_spec *cmd, struct casereader *input,
+ const struct dataset *ds)
+{
bool warn_bad_weight = true;
- for (reader = casereader_clone (input);
- (c = casereader_read (reader)) != NULL; case_unref (c))
+ struct dictionary *dict = dataset_dict (ds);
+
+
+ input = casereader_create_filter_missing (input,
+ cmd->dep_vars, cmd->n_dep_vars,
+ cmd->exclude,
+ NULL, NULL);
+
+ input = casereader_create_filter_missing (input,
+ cmd->factor_vars, cmd->n_factor_vars,
+ cmd->exclude,
+ NULL, NULL);
+
+ struct glm_workspace ws = {
+ .cats = categoricals_create (cmd->interactions, cmd->n_interactions,
+ cmd->wv, MV_ANY)
+ };
+
+ struct covariance *cov = covariance_2pass_create (
+ cmd->n_dep_vars, cmd->dep_vars, ws.cats, cmd->wv, cmd->exclude, true);
+
+ output_split_file_values_peek (ds, input);
+
+ struct taint *taint = taint_clone (casereader_get_taint (input));
+
+ ws.totals = moments_create (MOMENT_VARIANCE);
+
+ struct casereader *reader = casereader_clone (input);
+ struct ccase *c;
+ for (; (c = casereader_read (reader)) != NULL; case_unref (c))
{
double weight = dict_get_case_weight (dict, c, &warn_bad_weight);
- for ( v = 0; v < cmd->n_dep_vars; ++v)
- moments_pass_one (ws.totals, case_data (c, cmd->dep_vars[v])->f, weight);
+ for (int v = 0; v < cmd->n_dep_vars; ++v)
+ moments_pass_one (ws.totals, case_num (c, cmd->dep_vars[v]), weight);
covariance_accumulate_pass1 (cov, c);
}
casereader_destroy (reader);
- categoricals_done (cats);
+ if (cmd->dump_coding)
+ reader = casereader_clone (input);
+ else
+ reader = input;
- for (reader = casereader_clone (input);
- (c = casereader_read (reader)) != NULL; case_unref (c))
+ for (; (c = casereader_read (reader)) != NULL; case_unref (c))
{
double weight = dict_get_case_weight (dict, c, &warn_bad_weight);
- for ( v = 0; v < cmd->n_dep_vars; ++v)
- moments_pass_two (ws.totals, case_data (c, cmd->dep_vars[v])->f, weight);
+ for (size_t v = 0; v < cmd->n_dep_vars; ++v)
+ moments_pass_two (ws.totals, case_num (c, cmd->dep_vars[v]), weight);
covariance_accumulate_pass2 (cov, c);
}
casereader_destroy (reader);
+
+ if (cmd->dump_coding)
+ {
+ struct pivot_table *t = covariance_dump_enc_header (cov);
+ for (reader = input;
+ (c = casereader_read (reader)) != NULL; case_unref (c))
+ {
+ covariance_dump_enc (cov, c, t);
+ }
+
+ pivot_table_submit (t);
+ }
+
{
- gsl_matrix *cm = covariance_calculate_unnormalized (cov);
+ const gsl_matrix *ucm = covariance_calculate_unnormalized (cov);
+ gsl_matrix *cm = gsl_matrix_alloc (ucm->size1, ucm->size2);
+ gsl_matrix_memcpy (cm, ucm);
- dump_matrix (cm);
+ // dump_matrix (cm);
ws.total_ssq = gsl_matrix_get (cm, 0, 0);
reg_sweep (cm, 0);
- dump_matrix (cm);
-
+ /*
+ Store the overall SSE.
+ */
+ ws.ssq = gsl_vector_alloc (cm->size1);
+ gsl_vector_set (ws.ssq, 0, gsl_matrix_get (cm, 0, 0));
+ switch (cmd->ss_type)
+ {
+ case 1:
+ ssq_type1 (cov, ws.ssq, cmd);
+ break;
+ case 2:
+ ssq_type2 (cov, ws.ssq, cmd);
+ break;
+ case 3:
+ ssq_type3 (cov, ws.ssq, cmd);
+ break;
+ default:
+ NOT_REACHED ();
+ break;
+ }
+ // dump_matrix (cm);
gsl_matrix_free (cm);
}
if (!taint_has_tainted_successor (taint))
output_glm (cmd, &ws);
+ gsl_vector_free (ws.ssq);
+
+ covariance_destroy (cov);
+ moments_destroy (ws.totals);
+
taint_destroy (taint);
}
static void
-output_glm (const struct glm_spec *cmd, const struct glm_workspace *ws)
+put_glm_row (struct pivot_table *table, int row,
+ double a, double b, double c, double d, double e)
{
- const struct fmt_spec *wfmt = cmd->wv ? var_get_print_format (cmd->wv) : &F_8_0;
-
- int f;
- int r;
- const int heading_columns = 1;
- const int heading_rows = 1;
- struct tab_table *t ;
-
- const int nc = 6;
- int nr = heading_rows + 4 + cmd->n_factor_vars;
- if (cmd->intercept)
- nr++;
+ double entries[] = { a, b, c, d, e };
- t = tab_create (nc, nr);
- tab_title (t, _("Tests of Between-Subjects Effects"));
-
- tab_headers (t, heading_columns, 0, heading_rows, 0);
+ for (size_t col = 0; col < sizeof entries / sizeof *entries; col++)
+ if (entries[col] != SYSMIS)
+ pivot_table_put2 (table, col, row,
+ pivot_value_new_number (entries[col]));
+}
- tab_box (t,
- TAL_2, TAL_2,
- -1, TAL_1,
- 0, 0,
- nc - 1, nr - 1);
+static void
+output_glm (const struct glm_spec *cmd, const struct glm_workspace *ws)
+{
+ struct pivot_table *table = pivot_table_create (
+ N_("Tests of Between-Subjects Effects"));
- tab_hline (t, TAL_2, 0, nc - 1, heading_rows);
- tab_vline (t, TAL_2, heading_columns, 0, nr - 1);
+ pivot_dimension_create (table, PIVOT_AXIS_COLUMN, N_("Statistics"),
+ (cmd->ss_type == 1 ? N_("Type I Sum Of Squares")
+ : cmd->ss_type == 2 ? N_("Type II Sum Of Squares")
+ : N_("Type III Sum Of Squares")), PIVOT_RC_OTHER,
+ N_("df"), PIVOT_RC_COUNT,
+ N_("Mean Square"), PIVOT_RC_OTHER,
+ N_("F"), PIVOT_RC_OTHER,
+ N_("Sig."), PIVOT_RC_SIGNIFICANCE);
- tab_text (t, 0, 0, TAB_CENTER | TAT_TITLE, _("Source"));
+ struct pivot_dimension *source = pivot_dimension_create (
+ table, PIVOT_AXIS_ROW, N_("Source"),
+ cmd->intercept ? N_("Corrected Model") : N_("Model"));
- /* TRANSLATORS: The parameter is a roman numeral */
- tab_text_format (t, 1, 0, TAB_CENTER | TAT_TITLE, _("Type %s Sum of Squares"), "III");
- tab_text (t, 2, 0, TAB_CENTER | TAT_TITLE, _("df"));
- tab_text (t, 3, 0, TAB_CENTER | TAT_TITLE, _("Mean Square"));
- tab_text (t, 4, 0, TAB_CENTER | TAT_TITLE, _("F"));
- tab_text (t, 5, 0, TAB_CENTER | TAT_TITLE, _("Sig."));
+ double n_total, mean;
+ moments_calculate (ws->totals, &n_total, &mean, NULL, NULL, NULL);
- r = heading_rows;
- tab_text (t, 0, r++, TAB_LEFT | TAT_TITLE, _("Corrected Model"));
+ double df_corr = 1.0 + categoricals_df_total (ws->cats);
- double intercept, n_total;
+ double mse = gsl_vector_get (ws->ssq, 0) / (n_total - df_corr);
+ double intercept_ssq = pow2 (mean * n_total) / n_total;
if (cmd->intercept)
{
- double mean;
- moments_calculate (ws->totals, &n_total, &mean, NULL, NULL, NULL);
- intercept = pow2 (mean * n_total) / n_total;
-
- tab_text (t, 0, r, TAB_LEFT | TAT_TITLE, _("Intercept"));
- tab_double (t, 1, r, 0, intercept, NULL);
- tab_double (t, 2, r, 0, 1.00, wfmt);
+ int row = pivot_category_create_leaf (
+ source->root, pivot_value_new_text (N_("Intercept")));
- tab_double (t, 3, r, 0, intercept / 1.0 , NULL);
- r++;
+ /* The intercept for unbalanced models is of limited use and
+ nobody knows how to calculate it properly */
+ if (categoricals_isbalanced (ws->cats))
+ {
+ const double df = 1.0;
+ const double F = intercept_ssq / df / mse;
+ put_glm_row (table, row, intercept_ssq, 1.0, intercept_ssq / df,
+ F, gsl_cdf_fdist_Q (F, df, n_total - df_corr));
+ }
}
- for (f = 0; f < cmd->n_factor_vars; ++f)
+ double ssq_effects = 0.0;
+ for (int f = 0; f < cmd->n_interactions; ++f)
{
- tab_text (t, 0, r++, TAB_LEFT | TAT_TITLE,
- var_to_string (cmd->factor_vars[f]));
+ double df = categoricals_df (ws->cats, f);
+ double ssq = gsl_vector_get (ws->ssq, f + 1);
+ ssq_effects += ssq;
+ if (!cmd->intercept)
+ {
+ df++;
+ ssq += intercept_ssq;
+ }
+ double F = ssq / df / mse;
+
+ struct string str = DS_EMPTY_INITIALIZER;
+ interaction_to_string (cmd->interactions[f], &str);
+ int row = pivot_category_create_leaf (
+ source->root, pivot_value_new_user_text_nocopy (ds_steal_cstr (&str)));
+
+ put_glm_row (table, row, ssq, df, ssq / df, F,
+ gsl_cdf_fdist_Q (F, df, n_total - df_corr));
}
- tab_text (t, 0, r++, TAB_LEFT | TAT_TITLE, _("Error"));
+ {
+ /* Model / Corrected Model */
+ double df = df_corr;
+ double ssq = ws->total_ssq - gsl_vector_get (ws->ssq, 0);
+ if (cmd->intercept)
+ df--;
+ else
+ ssq += intercept_ssq;
+ double F = ssq / df / mse;
+ put_glm_row (table, 0, ssq, df, ssq / df, F,
+ gsl_cdf_fdist_Q (F, df, n_total - df_corr));
+ }
+
+ {
+ int row = pivot_category_create_leaf (source->root,
+ pivot_value_new_text (N_("Error")));
+ const double df = n_total - df_corr;
+ const double ssq = gsl_vector_get (ws->ssq, 0);
+ const double mse = ssq / df;
+ put_glm_row (table, row, ssq, df, mse, SYSMIS, SYSMIS);
+ }
+
+ {
+ int row = pivot_category_create_leaf (source->root,
+ pivot_value_new_text (N_("Total")));
+ put_glm_row (table, row, ws->total_ssq + intercept_ssq, n_total,
+ SYSMIS, SYSMIS, SYSMIS);
+ }
if (cmd->intercept)
{
- double ssq = intercept + ws->total_ssq;
- double mse = ssq / n_total;
- tab_text (t, 0, r, TAB_LEFT | TAT_TITLE, _("Total"));
- tab_double (t, 1, r, 0, ssq, NULL);
- tab_double (t, 2, r, 0, n_total, wfmt);
-
- r++;
+ int row = pivot_category_create_leaf (
+ source->root, pivot_value_new_text (N_("Corrected Total")));
+ put_glm_row (table, row, ws->total_ssq, n_total - 1.0, SYSMIS,
+ SYSMIS, SYSMIS);
}
- tab_text (t, 0, r, TAB_LEFT | TAT_TITLE, _("Corrected Total"));
-
- tab_double (t, 1, r, 0, ws->total_ssq, NULL);
- tab_double (t, 2, r, 0, n_total - 1.0, wfmt);
-
- tab_submit (t);
+ pivot_table_submit (table);
}
-static
-void dump_matrix (const gsl_matrix *m)
+#if 0
+static void
+dump_matrix (const gsl_matrix * m)
{
size_t i, j;
for (i = 0; i < m->size1; ++i)
}
printf ("\n");
}
+#endif
+
+
+\f
+static struct interaction *
+parse_design_term (struct lexer *lexer, const struct dictionary *dict)
+{
+ struct interaction *iact = interaction_create (NULL);
+ do
+ {
+ struct variable *var = parse_variable (lexer, dict);
+ if (!var)
+ goto error;
+ interaction_add_variable (iact, var);
+
+ if (lex_match (lexer, T_LPAREN) || lex_match_id (lexer, "WITHIN"))
+ {
+ lex_next_error (lexer, -1, -1,
+ "Nested variables are not yet implemented.");
+ goto error;
+ }
+ }
+ while (lex_match (lexer, T_ASTERISK));
+
+ return iact;
+
+error:
+ interaction_destroy (iact);
+ return NULL;
+}