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Simple statistics

Name

Simple statistics -- a basic structure for computing min, max, average and variance.

Synopsis


#include <gts.h>


            GtsRange;

void        gts_range_init                  (GtsRange *r);
void        gts_range_add_value             (GtsRange *r,
                                             gdouble val);
void        gts_range_update                (GtsRange *r);
void        gts_range_reset                 (GtsRange *r);
void        gts_range_print                 (GtsRange *r,
                                             FILE *fptr);

Description

Using gts_range_init(), gts_range_add_value() and gts_range_update(), you can easily maintain basic statistics about an ensemble of values.

Details

GtsRange

typedef struct {
  gdouble min, max, sum, sum2, mean, stddev;
  guint n;
} GtsRange;

A simple statistics structure.

gdouble min;

Minimum value of the population.

gdouble max;

Maximum value of the population.

gdouble sum;

gdouble sum2;

gdouble mean;

Average value of the population.

gdouble stddev;

Standard deviation of the population.

guint n;

Number of samples in the population.

gts_range_init ()

void        gts_range_init                  (GtsRange *r);

Initializes a GtsRange.

r :

a GtsRange.

gts_range_add_value ()

void        gts_range_add_value             (GtsRange *r,
                                             gdouble val);

Adds val to r.

r :

a GtsRange.

val :

a value to add to r.

gts_range_update ()

void        gts_range_update                (GtsRange *r);

Updates the fields of r.

r :

a GtsRange.

gts_range_reset ()

void        gts_range_reset                 (GtsRange *r);

Sets all the fields of r to 0.

r :

a GtsRange.

gts_range_print ()

void        gts_range_print                 (GtsRange *r,
                                             FILE *fptr);

Writes a text representation of r in fptr.

r :

a GtsRange.

fptr :

a file pointer.

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