X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ffactor_stats.c;h=79c9b80ca8b2a4c2e9c46b5016377f348805f95c;hb=e582516e80e5a04f10a651515a35b616911cf4d6;hp=2ba785a7d8e8c7044b2f42fa3ff2c94f96124d02;hpb=379aeac5640a20a122990640fdd33bdfa592a3c1;p=pspp-builds.git

diff --git a/src/factor_stats.c b/src/factor_stats.c
index 2ba785a7..79c9b80c 100644
--- a/src/factor_stats.c
+++ b/src/factor_stats.c
@@ -25,6 +25,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 #include "algorithm.h"
 #include "alloc.h"
 #include "moments.h"
+#include "percentiles.h"
 
 #include <stdlib.h>
 #include <math.h>
@@ -43,6 +44,7 @@ metrics_precalc(struct metrics *m)
   m->min = DBL_MAX;
   m->max = -DBL_MAX;
 
+  m->histogram = 0;
 
   m->moments = moments1_create(MOMENT_KURTOSIS);
 
@@ -51,9 +53,6 @@ metrics_precalc(struct metrics *m)
 				(hsh_hash_func *) hash_value,
 				(hsh_free_func *) weighted_value_free,
 				(void *) 0);
-
-
-
 }
 
 
@@ -126,7 +125,6 @@ metrics_postcalc(struct metrics *m)
   int i;
   int j = 1;  
 
-
   moments1_calculate (m->moments, &m->n, &m->mean, &m->var, 
 		      &m->skewness, &m->kurtosis);
 
@@ -144,20 +142,25 @@ metrics_postcalc(struct metrics *m)
   m->wvp = (struct weighted_value **) hsh_sort(m->ordered_data);
   m->n_data = hsh_count(m->ordered_data);
 
-  if ( m->n_data == 0 ) 
+  /* Trimmed mean calculation */
+  if ( m->n_data <= 1 ) 
     {
       m->trimmed_mean = m->mean;
       return;
     }
 
+  m->histogram = histogram_create(10, m->min, m->max);
 
-  /* Trimmed mean calculation */
+  for ( i = 0 ; i < m->n_data ; ++i ) 
+    {
+      struct weighted_value **wv = (m->wvp) ;
+      gsl_histogram_accumulate(m->histogram, wv[i]->v.f, wv[i]->w);
+    }
 
   tc = m->n * 0.05 ;
   k1 = -1;
   k2 = -1;
 
-
   for ( i = 0 ; i < m->n_data ; ++i ) 
     {
       cc += m->wvp[i]->w;
@@ -169,9 +172,10 @@ metrics_postcalc(struct metrics *m)
       
       if ( cc < tc ) 
 	k1 = i;
-
     }
 
+  
+
   k2 = m->n_data;
   for ( i = m->n_data -1  ; i >= 0; --i ) 
     {
@@ -180,6 +184,18 @@ metrics_postcalc(struct metrics *m)
     }
 
 
+  /* Calculate the percentiles */
+  ptiles(m->ptile_hash, m->wvp, m->n_data, m->n, m->ptile_alg);
+
+  tukey_hinges(m->wvp, m->n_data, m->n, m->hinge);
+
+  /* Special case here */
+  if ( k1 + 1 == k2 ) 
+    {
+      m->trimmed_mean = m->wvp[k2]->v.f;
+      return;
+    }
+
   m->trimmed_mean = 0;
   for ( i = k1 + 2 ; i <= k2 - 1 ; ++i ) 
     {
@@ -191,13 +207,6 @@ metrics_postcalc(struct metrics *m)
   m->trimmed_mean += (m->wvp[k1 + 1]->cc - tc) * m->wvp[k1 + 1]->v.f ;
   m->trimmed_mean /= 0.9 * m->n ;
 
-  m->histogram = histogram_create(10, m->min, m->max);
-
-  for ( i = 0 ; i < m->n_data ; ++i ) 
-    {
-      struct weighted_value **wv = (m->wvp) ;
-      gsl_histogram_accumulate(m->histogram, wv[i]->v.f, wv[i]->w);
-    }
 
 }
 
@@ -217,7 +226,12 @@ weighted_value_create(void)
 void 
 weighted_value_free(struct weighted_value *wv)
 {
-  struct case_node *cn = wv->case_nos;
+  struct case_node *cn ;
+
+  if ( !wv ) 
+    return ;
+
+  cn = wv->case_nos;
 
   while(cn)
     {
@@ -247,16 +261,29 @@ create_factor_statistics (int n, union value *id0, union value *id1)
   f->id[0] = *id0;
   f->id[1] = *id1;
   f->m = xmalloc( sizeof ( struct metrics ) * n ) ;
+  memset (f->m, 0, sizeof(struct metrics) * n);
+  f->n_var = n;
 
   return f;
 }
 
 
+void 
+metrics_destroy(struct metrics *m)
+{
+  hsh_destroy(m->ordered_data);
+  hsh_destroy(m->ptile_hash);
+  if ( m-> histogram ) 
+    gsl_histogram_free(m->histogram);
+}
+
 void
 factor_statistics_free(struct factor_statistics *f)
 {
-  hsh_destroy(f->m->ordered_data);
-  gsl_histogram_free(f->m->histogram);
+
+  int i; 
+  for ( i = 0 ; i < f->n_var; ++i ) 
+       metrics_destroy(&f->m[i]);
   free(f->m) ; 
   free(f);
 }