[GRASS-user] how to change UTM zone 45 in 44?

[Micha Silver]

On Mon, 23 Aug 2010 12:30:10 +0200
Nadine Jeschke <blaubaere at gmx.de> wrote:

> Dear Micha,
> 
> first thank you for that information!
> I´ve tried that before, creating two different locations, but always  
> when I created a new 45 location, Grass told me that a new location  
> was created but there are no projektion informations given.
> Is that because the files that I took for that step are: cidx, coor,  
> dbln head, hist etc.? they don´t have an ending like .shp or .shx....
> Can I give the information to Grass or is there another  possibility  
> with Q-Gis?

In QGIS, (or GRASS also) you can create new locations by using the EPSG
code. It's very simple. The code for UTM 44N 32644, and UTM 45N is
32645.
Click on the "New mapset" button then next, and after you give a name
to the new location, next again. Then Select from the list of
projections (type the EPSG code into the search window). Then you can
choose the N-S-E-W bounds and you're ready to go...


> 
> Hope you can help me!
> 
> Best regards
> 
> Nadine
> 
> 
> 
> 
> Am 22.08.2010 um 17:11 schrieb Micha Silver:
> 
> > On Sun, 22 Aug 2010 16:52:06 +0200
> > Nadine Jeschke <blaubaere at gmx.de> wrote:
> >
> >>
> >> Hello to all,
> >>
> >> I have a question about how to change UTM zones in grass.
> >>
> >> One of my maps is projected in UTM 44 and another map, that I´d
> >> like to blend with the first one, is in UTM 45.
> >
> > This question comes up often. What you need to do is create two
> > separate GRASS LOCATIONs, one for UTM 45 and one for UTM 44. Then
> > import the data into the correct LOCATION (UTM 45 data into that
> > LOCATION, UTM44 data into the other). And finally, use the v.proj or
> > r.proj modules to reproject all the data into a single LOCATION.
> >
> > Note that if you choose to project data from one UTM zone to
> > another, there will be distortion. It might be best to choose some
> > other third projection (not UTM at all) which minimizes distortion
> > across the width
> > of your area of interest.
> >
> > HTH
> >
> >> So in the display window they are located in different areas, but
> >> they should lie on top of each other for the blending...
> >>
> >> Is it possible to change in GrassGis the zone from UTM 45 in 44 ?
> >> If ist is, I need a step by step instruction because I´m not that
> >> firm with GrassGis.
> >>
> >> Thanks a lot for any helping information!!!
> >>
> >> best regards
> >>
> >> Nadine_______________________________________________
> >> grass-user mailing list
> >> grass-user at lists.osgeo.org
> >> http://lists.osgeo.org/mailman/listinfo/grass-user
> >>
> >> This mail was received via Mail-SeCure System.
> >>
> >>
> >
> >
> >
> > -- 
> > -- 
> > Micha Silver
> > Arava Development Co. +972-52-3665918
> > http://www.surfaces.co.il
> >
> 
> 
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> 
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