[GRASSLIST:7836] AW: average height

[Maik Trömel]

The function exists in Grass 6.0 but it doesn`t work the way i need it.
 
I tried: r.statistics base=GTOPO30 cover=special-postal-district
method=average output=newmap
But the result are all heights in the postal-district and not the
average height. 
 
I found another method:
r.average base=special-postal-district cover=GTOPO30 output=newmap
With this method i get the average. 
 
But I haven`t found anything similar for minimum and maximum.
 
Greetings
Maik
 
-----Ursprüngliche Nachricht-----
Von: turek2 [mailto:turek2 at poczta.fm] 
Gesendet: Dienstag, 9. August 2005 11:50
An: Maik Trömel
Betreff: Re: [GRASSLIST:7835] average height
 
Maik Trömel wrote: 
Hello,
 
i’m searching a function to get the maximum, the minimum und the average
of the heights of a postal-district.
 
I`ve got the “GTOPO30-Model” and a shapefile with the geometrie of the
postal-districts. 
I convertet the shapefile to rasterdata (the postal-codes are still
available). Now i want to use r.mapcalc to get the inforamtions from the
GTOPO30-Model. 
 
I tried: 
r.mapcalc newmap=”if(postalmap=5570,max(GTOPO30),null())”
 
But naturally it didn`t work.
The other functions i tried out didn`t work, too.
 
Does anybody have an idea how I could get the informations?
 
Thanks for your help.
 
Greeting
Maik
try r. statistics, but i'm not sure if it works in grass6.
good luck,
maciek
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