stats_2o.c File Reference

calculate second order statistics on data More...

Data Structures
struct	SprStatsStats
	(this module ignores this pointer) More...

Enumerations
enum	{ SPR_STATS_MEAN, SPR_STATS_SIGMA, SPR_STATS_COVAR, SPR_STATS_MOMENTS_ONLY }

Functions
SprStatsStats *	spr_stats_free (SprStatsStats *stats)
void	spr_stats_init (SprStatsStats *stats)
SprStatsStats *	spr_stats_alloc (SprStatsStats *stats, int what, int vlen)
void	spr_stats_update (SprStatsStats *stats, const SprMathReal *data, int what)
void	spr_stats_wupdate (SprStatsStats *stats, const SprMathReal *data, float weight, int what)
int	spr_stats_calc (SprStatsStats *stats, int what, const SprMathReal *const *Data, int ndata)

Detailed Description

calculate second order statistics on data

Calculate mean, sigma and the covariance matrix on a data-set.

Date

26/08/95

Author

Kris Demuynck

Revision History:

04/97 - KD

extracted from the mvg_init program