[GRASS-dev] [bug #5183] (grass) g.region -a: different number of rows if using 'res' or 'nsres' and 'ewres' - though res=nsres=ewres=10!

[Glynn Clements]

Request Tracker wrote:

> this bug's URL: http://intevation.de/rt/webrt?serial_num=5183
> -------------------------------------------------------------------------
> 
> Subject: g.region -a: different number of rows if using 'res' or 'nsres' and 'ewres' - though res=nsres=ewres=10!
> 
> Although the n,s,e,w are equal in both cases, and that res=nsres=ewres=10, the
>  number of rows in the resulting regions are different:
> 
> $ g.region n=5679000 s=5678670 w=599240 e=599880 res=10 -ag
> n=5679000
> s=5678670
> w=599240
> e=599880
> nsres=10
> ewres=10
> rows=33    < !!!
> cols=64
> 
> $ g.region n=5679000 s=5678670 w=599240 e=599880 nsres=10 ewres=10 -ag
> n=5679000
> s=5678660
> w=599240
> e=599880
> nsres=10
> ewres=10
> rows=34    < !!!
> cols=64
> 
> Please please please fix it before 6.2 release.

I've changed it in CVS.

Previously, ewres=/nsres= rounded to an even multiple of the
resolution, whereas res= simply rounded to a multiple.

-- 
Glynn Clements <glynn at gclements.plus.com>