[GRASSLIST:1674] Re: problem with v.extract

[Radim Blazek]

an lu wrote:
> 
> Hi,
> 
> i try to use v.extract to get a new vector map from an
> existing map  as following:
> 
> v.extract type=line input=old01 output=new01 new=1
> list=1
> 
> in map old01, there are three categories,  i can run
> the command above with no error warning and get a new
> map new01 with one category.
> however, no  data is extracted into new01, so i can
> display nothing for new01.
> 
> could somebody help me with that please?
> 
> thanks in advance.
> 
> --lu

Could you send me reports printed by:

v.report -h type=line map=old01 units=c,me
v.support map=new01
v.report -h type=line map=new01 units=c,me

Radim