statistics

Name

statistics, hstatistics - extract statistical information from a band

Syntax

 #include <xite/statistics.h>

 int statistics( IBAND b, int* min, int* max,
    int* median, double* mean, double* stdev );

 int hstatistics( histogram histo, int* min,
    int* max, int* median, double* mean,
    double* stdev );

Description

hstatistics calculates min, max, median, mean and standard deviation in a band from the histogram histo.

statistics calculates min, max, median, mean and standard deviation in the band b, by first producing the histogram and sending it to hstatistics.

Restrictions

statistics only works for bands with unsigned byte pixels.

Return value

 For 'hstatistics': Always 0.
 For 'statistics':
   0 => ok
   2 => Pixel-type is not unsigned byte

Author

Tor Lønnestad, BLAB, Ifi, UiO

Id

$Id: statistics.c,v 1.40 1997/01/29 10:45:49 svein Exp $