this bug's URL: http://intevation.de/rt/webrt?serial_num=3546
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Subject: i/o error in r.out.arc, accuracy too low
Platform: GNU/Linux/i386
grass obtained from: CVS
grass binary for platform: Compiled from Sources
GRASS Version: 6.1 cvs 2005
Karl Broich
The accuracy of outputformat in r.out.arc is inconsistant with GRASS internal format.
GRASS uses internally an accuracy of 8 numbers. r.out.arc writes out only 6 numbers.
After export and reimport with r.in.arc into GRASS this is felt as an mismatch of several cells at the east boundary. This error possibly occurs just on huge grids with n x n >> 1000 x 1000.
Example :
Original North/West corner :
n =28.64083333
w =37.45333333
res=0.00083333
After export with r.out.arc :
n =28.640833
w =37.453333
res=0.000833
Increasing the accuracy for r.out.arc output should be no problem.
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