[GRASSLIST:3310] Re: r.stats

[Markus Neteler]

Hi Gordon,

On Thu, Mar 07, 2002 at 02:37:57PM +1100, Gordon Keith wrote:
> I'm working my way through getting various statistics out of grass 
> using r.statistics, and things seem a little broken. I'm currently 
> running 5.0 pre1, but there is no mention of fixes to these routines in 
> the release notes.
> 
> Has anything changed since pre1 to make it worth getting a more recent 
> version?
> 
> Particular problems I am having:
> 
> > r.statistics base=facies cover=gabo20_slope method=average 
> out=avg_slope
> Sorry, <z> is not a valid flag

this problem was fixed recently (2002-03-04), the
next (!) CVS snapshot
http://grass.itc.it/grass5/source/snapshot_release/
will contain the fix (or you get it from CVS directly).

[...r.statistics]
all the problems should be fixed now.

> r.average works, but formats the output such that r.stats -l doesn't 
> give meaningful results eg:
> 
> > r.statistics base=facies cover=gabo20_slope method=stddev 
> out=std_slope
> > r.stats -l std_slope
> 6 1.201934
> 7 4.670386
> 8 1.855619
> 9 2.427760
> 10 2.465637
> * no data
> 
> is good, but 
> 
> > r.average  base=facies cover=gabo20_slope out=avg_slope
> > r.stats -l avg_slope
> r.stats: 0.419177-0.427731 from  to
> 0.727111-0.735665 from  to
> 0.761326-0.769879 from  to
> 2.591819-2.600373 from  to
> * no data
> 
> is useless.

It seems another fix is required here.
 
> I can get at the results of r.average via r.info, but it takes a lot 
> more reformatting.
> 
> Regards
> Gordon 

Best regards

 Markus Neteler