/* PSPP - a program for statistical analysis.
- Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2006, 2007, 2009, 2010, 2011 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 <config.h>
-#include <language/stats/chisquare.h>
+#include "language/stats/chisquare.h"
-#include <stdlib.h>
+#include <gsl/gsl_cdf.h>
#include <math.h>
+#include <stdlib.h>
-#include <data/case.h>
-#include <data/casereader.h>
-#include <data/dictionary.h>
-#include <data/procedure.h>
-#include <data/value-labels.h>
-#include <data/variable.h>
-#include <language/stats/freq.h>
-#include <language/stats/npar.h>
-#include <libpspp/alloc.h>
-#include <libpspp/assertion.h>
-#include <libpspp/compiler.h>
-#include <libpspp/hash.h>
-#include <libpspp/message.h>
-#include <libpspp/taint.h>
-#include <output/table.h>
-
-#include <gsl/gsl_cdf.h>
+#include "data/case.h"
+#include "data/casereader.h"
+#include "data/dataset.h"
+#include "data/dictionary.h"
+#include "data/format.h"
+#include "data/value-labels.h"
+#include "data/variable.h"
+#include "language/stats/freq.h"
+#include "language/stats/npar.h"
+#include "libpspp/array.h"
+#include "libpspp/assertion.h"
+#include "libpspp/cast.h"
+#include "libpspp/compiler.h"
+#include "libpspp/hash-functions.h"
+#include "libpspp/message.h"
+#include "libpspp/taint.h"
+#include "output/tab.h"
+
+#include "gl/xalloc.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
-/* Return a hash table containing the frequency counts of each
- value of VAR in CF .
- It is the caller's responsibility to free the hash table when
- no longer required.
-*/
-static struct hsh_table *
+/* Adds frequency counts of each value of VAR in INPUT between LO and HI to
+ FREQ_HASH. LO and HI and each input value is truncated to an integer.
+ Returns true if successful, false on input error. It is the caller's
+ responsibility to initialize FREQ_HASH and to free it when no longer
+ required, even on failure. */
+static bool
create_freq_hash_with_range (const struct dictionary *dict,
struct casereader *input,
const struct variable *var,
- double lo,
- double hi)
+ double lo_, double hi_,
+ struct hmap *freq_hash)
{
+ struct freq **entries;
bool warn = true;
- float i_d;
- struct ccase c;
+ struct ccase *c;
+ double lo, hi;
+ double i_d;
- struct hsh_table *freq_hash =
- hsh_create (4, compare_freq, hash_freq,
- free_freq_mutable_hash,
- (void *) var);
+ assert (var_is_numeric (var));
+ lo = trunc (lo_);
+ hi = trunc (hi_);
/* Populate the hash with zero entries */
- for (i_d = trunc (lo); i_d <= trunc (hi); i_d += 1.0 )
+ entries = xnmalloc (hi - lo + 1, sizeof *entries);
+ for (i_d = lo; i_d <= hi; i_d += 1.0 )
{
- union value the_value;
- struct freq_mutable *fr = xmalloc (sizeof (*fr));
-
- the_value.f = i_d;
-
- fr->value = value_dup (&the_value, 0);
- fr->count = 0;
-
- hsh_insert (freq_hash, fr);
+ size_t ofs = i_d - lo;
+ union value value = { i_d };
+ entries[ofs] = freq_hmap_insert (freq_hash, &value, 0,
+ value_hash (&value, 0, 0));
}
- while (casereader_read (input, &c))
+ for (; (c = casereader_read (input)) != NULL; case_unref (c))
{
- union value obs_value;
- struct freq **existing_fr;
- struct freq *fr = xmalloc(sizeof (*fr));
- fr->value = case_data (&c, var);
-
- fr->count = dict_get_case_weight (dict, &c, &warn);
-
- obs_value.f = trunc (fr->value->f);
-
- if ( obs_value.f < lo || obs_value.f > hi)
- {
- free (fr);
- case_destroy (&c);
- continue;
- }
-
- fr->value = &obs_value;
-
- existing_fr = (struct freq **) hsh_probe (freq_hash, fr);
-
- /* This must exist in the hash, because we previously populated it
- with zero counts */
- assert (*existing_fr);
-
- (*existing_fr)->count += fr->count;
- free (fr);
-
- case_destroy (&c);
- }
- if (casereader_destroy (input))
- return freq_hash;
- else
- {
- hsh_destroy (freq_hash);
- return NULL;
+ double x = trunc (case_num (c, var));
+ if (x >= lo && x <= hi)
+ {
+ size_t ofs = x - lo;
+ struct freq *fr = entries[ofs];
+ fr->count += dict_get_case_weight (dict, c, &warn);
+ }
}
-}
+ return casereader_destroy (input);
+}
-/* Return a hash table containing the frequency counts of each
- value of VAR in INPUT .
- It is the caller's responsibility to free the hash table when
- no longer required.
-*/
-static struct hsh_table *
+/* Adds frequency counts of each value of VAR in INPUT to FREQ_HASH. LO and HI
+ and each input value is truncated to an integer. Returns true if
+ successful, false on input error. It is the caller's responsibility to
+ initialize FREQ_HASH and to free it when no longer required, even on
+ failure. */
+static bool
create_freq_hash (const struct dictionary *dict,
struct casereader *input,
- const struct variable *var)
+ const struct variable *var,
+ struct hmap *freq_hash)
{
+ int width = var_get_width (var);
bool warn = true;
- struct ccase c;
-
- struct hsh_table *freq_hash =
- hsh_create (4, compare_freq, hash_freq,
- free_freq_mutable_hash,
- (void *) var);
+ struct ccase *c;
- for (; casereader_read (input, &c); case_destroy (&c))
+ for (; (c = casereader_read (input)) != NULL; case_unref (c))
{
- struct freq **existing_fr;
- struct freq *fr = xmalloc(sizeof (*fr));
- fr->value = case_data (&c, var);
+ const union value *value = case_data (c, var);
+ size_t hash = value_hash (value, width, 0);
+ double weight = dict_get_case_weight (dict, c, &warn);
+ struct freq *f;
- fr->count = dict_get_case_weight (dict, &c, &warn);
+ f = freq_hmap_search (freq_hash, value, width, hash);
+ if (f == NULL)
+ f = freq_hmap_insert (freq_hash, value, width, hash);
- existing_fr = (struct freq **) hsh_probe (freq_hash, fr);
- if ( *existing_fr)
- {
- (*existing_fr)->count += fr->count;
- free (fr);
- }
- else
- {
- *existing_fr = fr;
- fr->value = value_dup (fr->value, var_get_width (var));
- }
+ f->count += weight;
}
- if (casereader_destroy (input))
- return freq_hash;
- else
- {
- hsh_destroy (freq_hash);
- return NULL;
- }
-}
-
+ return casereader_destroy (input);
+}
static struct tab_table *
create_variable_frequency_table (const struct dictionary *dict,
struct casereader *input,
const struct chisquare_test *test,
- int v,
- struct hsh_table **freq_hash)
+ int v, struct hmap *freq_hash)
{
int i;
struct tab_table *table ;
const struct variable *var = ost->vars[v];
- *freq_hash = create_freq_hash (dict, input, var);
- if (*freq_hash == NULL)
- return NULL;
+ hmap_init (freq_hash);
+ if (!create_freq_hash (dict, input, var, freq_hash))
+ {
+ freq_hmap_destroy (freq_hash, var_get_width (var));
+ return NULL;
+ }
- n_cells = hsh_count (*freq_hash);
+ n_cells = hmap_count (freq_hash);
if ( test->n_expected > 0 && n_cells != test->n_expected )
{
return NULL;
}
- table = tab_create(4, n_cells + 2, 0);
- tab_dim (table, tab_natural_dimensions);
+ table = tab_create(4, n_cells + 2);
- tab_title (table, var_to_string(var));
+ tab_title (table, "%s", var_to_string(var));
tab_text (table, 1, 0, TAB_LEFT, _("Observed N"));
tab_text (table, 2, 0, TAB_LEFT, _("Expected N"));
tab_text (table, 3, 0, TAB_LEFT, _("Residual"));
tab_headers (table, 1, 0, 1, 0);
tab_box (table, TAL_1, TAL_1, -1, -1,
- 0, 0, table->nc - 1, tab_nr(table) - 1 );
+ 0, 0, tab_nc (table) - 1, tab_nr(table) - 1 );
tab_hline (table, TAL_1, 0, tab_nc(table) - 1, 1);
tab_vline (table, TAL_1, i, 0, tab_nr(table) - 1);
- tab_text (table, 0, table->nr - 1, TAB_LEFT, _("Total"));
+ tab_text (table, 0, tab_nr (table) - 1, TAB_LEFT, _("Total"));
return table;
}
int n_cells = test->hi - test->lo + 1;
- table = tab_create(1 + ost->n_vars * 4, n_cells + 3, 0);
- tab_dim (table, tab_natural_dimensions);
+ table = tab_create(1 + ost->n_vars * 4, n_cells + 3);
tab_title (table, _("Frequencies"));
for ( i = 0 ; i < ost->n_vars ; ++i )
}
for ( i = test->lo ; i <= test->hi ; ++i )
- tab_float (table, 0, 2 + i - test->lo,
- TAB_LEFT, 1 + i - test->lo, 8, 0);
+ tab_fixed (table, 0, 2 + i - test->lo,
+ TAB_LEFT, 1 + i - test->lo, 8, 0);
tab_headers (table, 1, 0, 2, 0);
tab_box (table, TAL_1, TAL_1, -1, -1,
- 0, 0, table->nc - 1, tab_nr(table) - 1 );
+ 0, 0, tab_nc (table) - 1, tab_nr(table) - 1 );
tab_hline (table, TAL_1, 1, tab_nc(table) - 1, 1);
tab_hline (table, TAL_1, 0, tab_nc(table) - 1, 2);
- tab_text (table, 0, table->nr - 1, TAB_LEFT, _("Total"));
+ tab_text (table, 0, tab_nr (table) - 1, TAB_LEFT, _("Total"));
return table;
}
const struct one_sample_test *ost = (const struct one_sample_test*) test;
struct tab_table *table;
- table = tab_create (1 + ost->n_vars, 4, 0);
- tab_dim (table, tab_natural_dimensions);
+ table = tab_create (1 + ost->n_vars, 4);
tab_title (table, _("Test Statistics"));
tab_headers (table, 1, 0, 1, 0);
chisquare_execute (const struct dataset *ds,
struct casereader *input,
enum mv_class exclude,
- const struct npar_test *test)
+ const struct npar_test *test,
+ bool exact UNUSED,
+ double timer UNUSED)
{
const struct dictionary *dict = dataset_dict (ds);
int v, i;
- struct one_sample_test *ost = (struct one_sample_test *) test;
- struct chisquare_test *cst = (struct chisquare_test *) test;
+ struct chisquare_test *cst = UP_CAST (test, struct chisquare_test,
+ parent.parent);
+ struct one_sample_test *ost = &cst->parent;
int n_cells = 0;
double total_expected = 0.0;
+ const struct variable *wvar = dict_get_weight (dict);
+ const struct fmt_spec *wfmt = wvar ?
+ var_get_print_format (wvar) : & F_8_0;
double *df = xzalloc (sizeof (*df) * ost->n_vars);
double *xsq = xzalloc (sizeof (*df) * ost->n_vars);
{
for ( v = 0 ; v < ost->n_vars ; ++v )
{
+ const struct variable *var = ost->vars[v];
double total_obs = 0.0;
- struct hsh_table *freq_hash = NULL;
+ struct hmap freq_hash;
struct casereader *reader =
casereader_create_filter_missing (casereader_clone (input),
- &ost->vars[v], 1, exclude, NULL);
+ &var, 1, exclude,
+ NULL, NULL);
struct tab_table *freq_table =
create_variable_frequency_table(dict, reader, cst, v, &freq_hash);
if ( NULL == freq_table )
continue;
- ff = (struct freq **) hsh_sort (freq_hash);
+ ff = freq_hmap_sort (&freq_hash, var_get_width (var));
- n_cells = hsh_count (freq_hash);
+ n_cells = hmap_count (&freq_hash);
for ( i = 0 ; i < n_cells ; ++i )
total_obs += ff[i]->count;
xsq[v] = 0.0;
for ( i = 0 ; i < n_cells ; ++i )
{
+ struct string str;
double exp;
- const union value *observed_value = ff[i]->value;
+ const union value *observed_value = &ff[i]->value;
+
+ ds_init_empty (&str);
+ var_append_value_name (var, observed_value, &str);
/* The key */
- tab_text (freq_table, 0, i + 1, TAB_LEFT,
- var_get_value_name (ost->vars[v], observed_value));
+ tab_text (freq_table, 0, i + 1, TAB_LEFT, ds_cstr (&str));
+ ds_destroy (&str);
+
/* The observed N */
- tab_float (freq_table, 1, i + 1, TAB_NONE,
- ff[i]->count, 8, 0);
+ tab_double (freq_table, 1, i + 1, TAB_NONE,
+ ff[i]->count, wfmt);
if ( cst->n_expected > 0 )
exp = cst->expected[i] * total_obs / total_expected ;
else
exp = total_obs / (double) n_cells;
- tab_float (freq_table, 2, i + 1, TAB_NONE,
- exp, 8, 2);
+ tab_double (freq_table, 2, i + 1, TAB_NONE,
+ exp, NULL);
/* The residual */
- tab_float (freq_table, 3, i + 1, TAB_NONE,
- ff[i]->count - exp, 8, 2);
+ tab_double (freq_table, 3, i + 1, TAB_NONE,
+ ff[i]->count - exp, NULL);
xsq[v] += (ff[i]->count - exp) * (ff[i]->count - exp) / exp;
}
df[v] = n_cells - 1.0;
- tab_float (freq_table, 1, i + 1, TAB_NONE,
- total_obs, 8, 0);
+ tab_double (freq_table, 1, i + 1, TAB_NONE,
+ total_obs, wfmt);
tab_submit (freq_table);
- hsh_destroy (freq_hash);
+ freq_hmap_destroy (&freq_hash, var_get_width (var));
+ free (ff);
}
}
else /* ranged == true */
for ( v = 0 ; v < ost->n_vars ; ++v )
{
+ const struct variable *var = ost->vars[v];
double total_obs = 0.0;
struct casereader *reader =
casereader_create_filter_missing (casereader_clone (input),
- &ost->vars[v], 1, exclude, NULL);
- struct hsh_table *freq_hash =
- create_freq_hash_with_range (dict, reader,
- ost->vars[v], cst->lo, cst->hi);
-
+ &var, 1, exclude,
+ NULL, NULL);
+ struct hmap freq_hash;
struct freq **ff;
- if (freq_hash == NULL)
- continue;
+ hmap_init (&freq_hash);
+ if (!create_freq_hash_with_range (dict, reader, var,
+ cst->lo, cst->hi, &freq_hash))
+ {
+ freq_hmap_destroy (&freq_hash, var_get_width (var));
+ continue;
+ }
- ff = (struct freq **) hsh_sort (freq_hash);
- assert ( n_cells == hsh_count (freq_hash));
+ ff = freq_hmap_sort (&freq_hash, var_get_width (var));
- for ( i = 0 ; i < hsh_count (freq_hash) ; ++i )
+ for ( i = 0 ; i < hmap_count (&freq_hash) ; ++i )
total_obs += ff[i]->count;
xsq[v] = 0.0;
- for ( i = 0 ; i < hsh_count (freq_hash) ; ++i )
+ for ( i = 0 ; i < hmap_count (&freq_hash) ; ++i )
{
+ struct string str;
double exp;
- const union value *observed_value = ff[i]->value;
+ const union value *observed_value = &ff[i]->value;
+ ds_init_empty (&str);
+ var_append_value_name (ost->vars[v], observed_value, &str);
/* The key */
tab_text (freq_table, v * 4 + 1, i + 2 , TAB_LEFT,
- var_get_value_name (ost->vars[v], observed_value));
+ ds_cstr (&str));
+ ds_destroy (&str);
/* The observed N */
- tab_float (freq_table, v * 4 + 2, i + 2 , TAB_NONE,
- ff[i]->count, 8, 0);
+ tab_double (freq_table, v * 4 + 2, i + 2 , TAB_NONE,
+ ff[i]->count, wfmt);
if ( cst->n_expected > 0 )
exp = cst->expected[i] * total_obs / total_expected ;
else
- exp = total_obs / (double) hsh_count (freq_hash);
+ exp = total_obs / (double) hmap_count (&freq_hash);
/* The expected N */
- tab_float (freq_table, v * 4 + 3, i + 2 , TAB_NONE,
- exp, 8, 2);
+ tab_double (freq_table, v * 4 + 3, i + 2 , TAB_NONE,
+ exp, NULL);
/* The residual */
- tab_float (freq_table, v * 4 + 4, i + 2 , TAB_NONE,
- ff[i]->count - exp, 8, 2);
+ tab_double (freq_table, v * 4 + 4, i + 2 , TAB_NONE,
+ ff[i]->count - exp, NULL);
xsq[v] += (ff[i]->count - exp) * (ff[i]->count - exp) / exp;
}
- tab_float (freq_table, v * 4 + 2, tab_nr (freq_table) - 1, TAB_NONE,
- total_obs, 8, 0);
+ tab_double (freq_table, v * 4 + 2, tab_nr (freq_table) - 1, TAB_NONE,
+ total_obs, wfmt);
df[v] = n_cells - 1.0;
- hsh_destroy (freq_hash);
+ freq_hmap_destroy (&freq_hash, var_get_width (var));
+ free (ff);
}
tab_submit (freq_table);
tab_text (stats_table, 1 + v, 0, TAB_CENTER, var_get_name (var));
- tab_float (stats_table, 1 + v, 1, TAB_NONE, xsq[v], 8,3);
- tab_float (stats_table, 1 + v, 2, TAB_NONE, df[v], 8,0);
+ tab_double (stats_table, 1 + v, 1, TAB_NONE, xsq[v], NULL);
+ tab_fixed (stats_table, 1 + v, 2, TAB_NONE, df[v], 8, 0);
- tab_float (stats_table, 1 + v, 3, TAB_NONE,
- gsl_cdf_chisq_Q (xsq[v], df[v]), 8,3);
+ tab_double (stats_table, 1 + v, 3, TAB_NONE,
+ gsl_cdf_chisq_Q (xsq[v], df[v]), NULL);
}
tab_submit (stats_table);
}
projects / pspp-builds.git / blobdiff