[GRASS-user] Searching for technical details on how v.rast.stats calculates means and other statistics

[RichardCooper]

The output from g.region:
g.region -p                                                                     
projection: 3 (Latitude-Longitude)
zone:       0
datum:      wgs84
ellipsoid:  wgs84
north:      35:38:24N
south:      15:10:48S
west:       89:45:36E
east:       140:34:48E
nsres:      0:13:12
ewres:      0:13:12
rows:       231
cols:       231
cells:      53361

This is r.univar without the zone file:
r.univar map=cahpa_i0apr_05216_nc_remapped_nc_1 at prcp05216ijk                    
total null and non-null cells: 53361
total null cells: 16564
Of the non-null cells:
----------------------
n: 36797
minimum: 0
maximum: 0.00282167
range: 0.00282167
mean: 7.79549e-05
mean of absolute values: 7.79549e-05
standard deviation: 0.000106692
variance: 1.13832e-08
variation coefficient: 136.864 %
sum: 2.86850755307868
(Fri Feb 20 21:41:59 2015) Command finished (0 sec)                             

Please also see my earlier comment, where I edited the previous message:
copied here:

> I'll need to check again, but there seems to be a mismatch between
> categories reported in r.univar and the actual category in the zone file.
> E.g. category 2 reported by r.univar is derived from category 1 of the
> zones file? 






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