[GRASS-user] Warning regarding Datum unknown not recognised by GRASS

[Kim Besson]

So, this means that I'm not able to use g.proje -jf output to properly
define a coordinate system right?

2010/6/29 Markus Neteler <neteler at osgeo.org>

> Hi Kim,
>
> On Tue, Jun 29, 2010 at 6:37 PM, Kim Besson <kimbesson1981 at gmail.com>
> wrote:
> > Hello Markus
> > Thanks for the reply
> > To do what you suggest, I would have to retrieve LOCATION's CRS EPSG code
> > and I'm not able to get it automatically. I only can get that PROJ4
> string
> > by using g.proj. Is there a way to automatically get a LOCATIONS's EPSG
> > code?
>
> That not possible (yet?) - also GDAL/OGR does not have a reverse
> lookup - too complicated or too many exceptions.
>
> The string
> +proj=utm +south +no_defs +zone=24 +a=6378137 +rf=298.257223563
> +towgs84=0.000,0.000,0.000 +to_meter=1
>
> looks like
>  http://spatialreference.org/ref/epsg/32724/
> to me.
>
> cs2cs -le | grep 'WGS 84'
>    WGS84 a=6378137.0      rf=298.257223563 WGS 84
>
> Markus
>
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