[GRASS5] contradiction for v.overlay
Markus Neteler
neteler at itc.it
Tue Nov 16 02:22:13 EST 2004
On Mon, Nov 15, 2004 at 05:40:10PM +0100, Otto Dassau wrote:
> Hi,
>
> there is a contradiction between the manual and the g57 tutorial for v.overlay:
>
> a) v.overlay -help:
>
> operator:
> and : also known as 'intersection' in GIS
> or : also known as 'union' in GIS (only for atype=area)
> ...
>
> b) in the tutorial it says the opposite:
>
> Vector union (AND):
> v.overlay ainput=polbnda_germany binput=clipmap output=clipmap_union operator=and -t
>
> Vector intersection (OR):
> v.overlay ainput=polbnda_germany binput=clipmap output=clipmap_intersection operator=or -t
>
>
> I guess the manual is correct and the tutorial has to be changed.
Thanks, I have modified the turorial.
Markus
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