[GRASSLIST:4067] Re:Basic proj question

[Michele]

Hi,

Labert equal area is not a datum, and you can find it choosing "Other Projection" ( "D" item in the menu) while you setup a new location.

Michele.





> I'm trying to project data from non-wgs84 sources onto the GTOPO30
> DEM.  But these data are in Lambert equal area.  When I go to set up 
> a database in Lambert equal area, the choices for "geodetic datum"
> do not include it, i.e.:
> 
>   ok? (y/n) [y] 
>   Do you wish to specify a geodetic datum for this location?(y/n) [y] y
> 
>   Please specify datum name
>   Enter 'list' for the list of available datums
>   or 'custom' if you wish to enter custom parameters
>   Hit RETURN to cancel request
>   >list
>   Short Name      Long Name / Description
>   ---
>   agd66   Australian_Geodetic_Datum_1966
>   (australian ellipsoid)
>   ---
>   agd84   Australian_Geodetic_Datum_1984
>   (australian ellipsoid)
>   ...
> 
> and so on.  No Lambert equal area, or several others I might name.  Does
> this list come from PROJ.4?
> 
> I've compiled GRASS 5.3 with the latest PROJ.4 I could find, and still
> no luck with this.  Any idea what I'm doing wrong here?  I'm assuming
> that as per the manual one creates two databases and then uses r.proj
> to project the one coordinate system onto the other one.
> 
> Thanks.  :^)
> 
> -- 
> Adios,
> Chris Cornuelle
> bob at xmission dot com
> 
>