[GRASS-user] Projection String I can not figure out

[Markus Metz]

stephen sefick wrote:
> Is there a way to import and re-project into GRASS
> without having to use ogr2ogr first?

Reprojection using GRASS: import into a new location, reproject from
new location into target location with v.proj.

If the shapefile holds polygons, I would strongly advice against using
ogr2ogr for reprojection because (non-topological) ogr2ogr will likely
create small overlapping polygons and small gaps between originally
adjacent polygons.

Markus M

>
> Markus Metz wrote:
>> stephen sefick wrote:
>>> GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.017453292519943295]]
>>>
>>> This is the projection string from a shp file from the USGS national
>>> hydrography dataset.  I would like to reproject this into another
>>> format, but I don't know exactly what proj4 definitions to use for
>>> this to make it work...
>>
>> Maybe
>>
>> g.proj georef=<path_to_.prj_file> -j
>>
>> helps?
>>
>> Markus M
>>
>
>
>
> --
> Stephen Sefick
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