nd_stats_to_grid()

static char * nd_stats_to_grid ( const ND_STATS *  stats )

static

Create a printable view of the ND_STATS histogram.

Caller is responsible for freeing. Currently only prints first two dimensions.

Definition at line 437 of file gserialized_estimate.c.

{
 char *rv;
 int j, k;
 int sizex = (int)roundf(stats->size[0]);
 int sizey = (int)roundf(stats->size[1]);
 stringbuffer_t *sb = stringbuffer_create();
 
 for ( k = 0; k < sizey; k++ )
 {
     for ( j = 0; j < sizex; j++ )
     {
         stringbuffer_aprintf(sb, "%3d ", (int)roundf(stats->value[j + k*sizex]));
     }
     stringbuffer_append(sb,  "\n");
 }
 
 rv = stringbuffer_getstringcopy(sb);
 stringbuffer_destroy(sb);
 return rv;
}

References ND_STATS_T::size, stringbuffer_append(), stringbuffer_aprintf(), stringbuffer_create(), stringbuffer_destroy(), stringbuffer_getstringcopy(), and ND_STATS_T::value.

Referenced by _postgis_gserialized_stats().

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