[GRASS-user] help with ogr2ogr and .shp file

[WolfgangZ]

Hi Antonio,

you need a real location for hidro, not only a x,y location! I hope you 
know in which coordinate system your shapefile is? So, you have to build 
a location for that specific coordinate system! Then v.proj will find 
the transformation parameters.

Wolfgang

antonio rodriguez schrieb:
> Hamish escribió:
>> antonio rodriguez wrote:
>>  
>>> I need some help and advice to transform a .shp file to a format 
>>> readable by GRASS.
>>>     
>>
>> from within your lat lon GRASS location:
>>
>> v.in.ogr location=
>>
>> to import the shape file and create a new location for it based on its
>> .prj projection info. (assuming it has a .prj file. if not you'll have
>> to create the needed location manually and import using v.in.ogr from
>> within the new location)
>>
>>  
>>> Extent: (100528.742188, 3991489.250000) - (610083.250000, 
>>> 4288506.900918)
>>> Layer SRS WKT: (unknown)
>>>     
>>
>> Looks like you'll have to create a new location and set the projection
>> settings manually...
>>
>>
>> then (in the lat/lon location) suck it into the lat/lon projection with
>> v.proj.
>>
>>   
> Dear Hamish, Wolf:
> 
> Well, I'll try to be concize. I have an existant location=andal, 
> mapset=toni with a region:
> 
> projection: 3 (Latitude-Longitude)
> zone:       0
> datum:      wgs84
> ellipsoid:  wgs84
> north:      39N
> south:      36N
> west:       8W
> east:       1W
> nsres:      0:00:03.6
> ewres:      0:00:03.6
> rows:       3000
> cols:       7000
> 
> Within this location and mapset, with v.in.ogr, I have imported the .shp 
> file into a new location:
> 
> v.in.ogr dsn=/home/toni/tmp/hidrografialineal/hs1-1500.shp 
> out=hidrologia location=hidro
> 
> I exit the current session and start a new one with the new parameters:
> 
> location=hidro and mapset=PERMANENT:
> g.region -p
> 
> projection: 0 (x,y)
> zone:       0
> north:      4288506.90091814
> south:      3991489.25
> west:       100528.7421875
> east:       610083.25
> nsres:      14850.88254591
> ewres:      25477.72539063
> rows:       20
> cols:       20
> 
> Everything is OK. I exit this session and start the first one (the one 
> where I want to import the hidrologia vector file)
> 
> So in location=andal, mapset=toni I do
> 
> v.proj input=hidrologia location=hidro mapset=PERMANENT output=hidrologia
> 
> And I get:
> 
> PROJ_INFO  and PROJ_UNITS files not found for location hidro
> 
> Where do I get this files? How do I create it?
> 
> TIA
> 
> Antonio
> 
> 
>>
>> Hamish
>>
>>   
> 
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