[GRASS5] difficulties with r.proj (was: Temporal data in GRASS?)

Eric G. Miller egm2 at jps.net
Fri Oct 26 20:52:58 EDT 2001

On Fri, 26 Oct 2001 17:19:14 -0400, Carl Worth <cworth at east.isi.edu> wrote:

> Carl Worth writes:
>  > Markus Neteler writes:
>  >  > g.region rast=imported_map
>  > 
>  > Whoops... that was my problem. Somehow I thought my elevation and map
>  > data were for the exact same region, but I guess not. I feel foolish.
> I'm making headway, but I'm also causing new problems.
> My two datasets *are* both for the same region -- the problem was that
> the data were in two different projections, (UTM vs. Albers Equal
> Area). I've now got each one imported into its own location and I can
> view each one separately just fine.
> But, of course, I'd like to see them together, so I need to transform
> one into the projection of the other. r.proj looks to fit the bill
> exactly, but I'm getting the following:
> 	GRASS > r.proj input=amap location=albers
> 	cannot initialize pj
> 	cause: projection not named
> 	ERROR: Can't get projection key values of output map

I'm guessing you imported your data with r.in.gdal?  Recently there
have been some changes to fix the problem of not completely defining
the region when r.in.gdal creates a new location.  You can probably
fix it by running g.setproj with the correct parameters.  Otherwise,
please try the new r.in.gdal in CVS.

Eric G. Miller <egm2 at jps.net>

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