Map Projections

[Malcolm Williamson]

Hi, Roy
Create a new lat-long Location, and digitize your maps in that Location. 
Use v.proj to re-project the lat-long maps to UTM in your other Location. 
Hint: both Location should be under the same directory (GRASS 
"Database"), though you can always resort to symbolic links if you don't 
have enough physical disk space. Happy digitizing,
--
Malcolm D. Williamson - GIS Specialist           E-mail: malcolm at cast.uark.edu
Center for Advanced Spatial Technologies      Telephone: (501) 575-6159
Ozark Rm. 12                                        Fax: (501) 575-5218 
University of Arkansas              
Fayetteville, AR 72701

On Fri, 13 Jun 1997, 
R.A.Sanderson wrote:

> Dear Grass Users,
> 
> Is there a simple way of using two map projections simultaneously in GRASS?
>  I have a GRASS location in UTM, but need to add new maps by digitising
> from base maps stored as latitude-longitude.  The v.digit command only
> seems able to cope with digitising using the same projection as the
> original location (in this case UTM). I could resort to using Arc/Info for
> digitising, then PROJECT/TRANSFORM into UTM before exporting to GRASS, but
> I'd prefer to carry out the whole operation in GRASS if possible.
> 
> Cheers
> Roy
> 
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> Roy Sanderson
> Centre for Land Use and Water Resources Research
> Porter Building
> University of Newcastle
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> NE1 7RU
> United Kingdom
> 
> Tel: +44 191 222 7789
> Fax: +44 191 222 6563
> URL: http://www.cluwrr.ncl.ac.uk
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