Re: [Geotools-gt2-users] how to define the projection for shp file (no prj)

[Adrian C. <ac...@gm...>]

On Tue, 2006-10-03 at 15:33 -0700, Jody Garnett wrote:
> JONGSUNG LEE wrote:
> > Hi,
> >
> > I load a shapefile which doesn't have a prj file.  But, we know that it is in WGS84. 
> How can I define the projection after I loaded the shapfile into a datastore?

If you can create the .prj file *before* loading it, then the .prj file
is simply a WKT file with the projection information. You'll need to
know if your coordinates are geographic or projected and other info than
simply WGS84. For example, 

tribuntu:/usr/local/gisData> cat world/countries.prj 

GEOGCS["GCS_WGS_1984",DATUM["WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],
       PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]]

Haven't thought about doing it after loading, but you can look at
2.3.0's DemoBase application to see how it's done for a feature on its
own.

cheers,
adrian