[GRASSLIST:1507] using v.what to get info. of vector map

GRASS GRASS user
1

Hi,

Trying to get information of a vector map, which
projection is set as longitude-latitude, i use the
command as following:
   cat ll_data | v.what map=I95

ll_data contains one longitude-latitude coordinates:

-71.3780 41.8900
(this point is in the I95)

and it give me the output:
  
  UTM - -71.38 41.89
   nothing found.

i guess the grass regards the ll coordinates as utm,
could anyone tell me what need to do to get expected
result?
thanks for your help.

--lu

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2

On Sat, Feb 24, 2001 at 04:33:38PM -0800, an lu wrote:

Hi,

Trying to get information of a vector map, which
projection is set as longitude-latitude, i use the
command as following:
   cat ll_data | v.what map=I95

ll_data contains one longitude-latitude coordinates:

-71.3780 41.8900
(this point is in the I95)

and it give me the output:
  
  UTM - -71.38 41.89
   nothing found.

i guess the grass regards the ll coordinates as utm,
could anyone tell me what need to do to get expected
result?
thanks for your help.

What does "g.region -p" say about your database's coordinate system. If
it says, UTM, then that's a start...

--
Eric G. Miller <egm2@jps.net>

3

after "g.region -p", i can get:

projection: 3 (Latitude-Longitude)
zone: 0
north: ...
.
.
.

--- "Eric G. Miller" <egm2@jps.net> wrote:

On Sat, Feb 24, 2001 at 04:33:38PM -0800, an lu
wrote:
> Hi,
>
> Trying to get information of a vector map, which
> projection is set as longitude-latitude, i use
the
> command as following:
> cat ll_data | v.what map=I95
>
> ll_data contains one longitude-latitude
coordinates:
>
> -71.3780 41.8900
> (this point is in the I95)
>
> and it give me the output:
>
> UTM - -71.38 41.89
> nothing found.
>
> i guess the grass regards the ll coordinates as
utm,
> could anyone tell me what need to do to get
expected
> result?
> thanks for your help.

What does "g.region -p" say about your database's
coordinate system. If
it says, UTM, then that's a start...

--
Eric G. Miller <egm2@jps.net>

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