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Newsgroups: info.grass.user
Path: zorro.cecer.army.mil!irina
From: irina at zorro.cecer.army.mil (Irina  Kosinovsky)
Subject: Re: Errors in v.proj, m.get.stp, & m.setproj
Message-ID: <C3yFJC.MBM at news.cecer.army.mil>
Sender: news at news.cecer.army.mil (Net.Noise owner)
Organization: US Army Corps of Engineers Construction Engineering Research Labs
References: <9303151721.AA26577 at niwot>
Date: Mon, 15 Mar 1993 23:50:00 GMT
Lines: 53

In <9303151721.AA26577 at niwot> ront at niwot.CFNR.ColoState.EDU (Ronald Thomas) writes:


>GRASSusers,

>I reported an error to the bugs.list, and want to share it with the general
>users.

>When using m.set.stp or m.setproj to set up a state plane projection in a
>mapset, beware of errors. Here in northern Colorado, these programs select
>the central Colorado state plane zone (502)  for Larimer County, when in
>fact, the county is in the northern zone (501).  If you use v.proj to
>transform data, be aware that it uses m.setproj to create projection
>reference files in the new state plane mapset, and its output should be
>checked for errors.

I assume you are talking about old (SCS) version of v.proj.
The new version (about to get released) gets the state plane zone
from PROJ_INFO file in your location (which you can create using g.setproj)

>Now that I have data transformed from my UTM mapset to a state plane
>mapset, I'm having trouble setting/changing the region within the state
>plane mapset.  Am I correct in assumming that in order to make full use
>of the state plane data, I must copy the state plane mapset from the UTM 
>location into a separate State Plane location?  

The new v.proj will put the resulting vector file into the right location
for you (it lets you for example convert a vector file in UTM location A
to a State Plane vector file in location B (which is State Plane), so
you don't have any problems with having both UTM and State Plane mapsets
in the same location -- i.e. each location has its own projection.


>^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^
>   Ronald Thomas                         ^  ront at meeker.cfnr.colostate.edu
>    Natural Resources Spec. (GIS)        ^  
>     Resources Management Division       ^   Phone: 303-586-3565  x285
>      Rocky Mountain National Park       ^          700-323-7285  (FTS)
>       Estes Park, CO  80517             ^ 
>^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^
-- 
Irina Kosinovsky [irina at zorro.cecer.army.mil]
Construction Engineering Research Labs, US Army Corps of Engineers
Champaign, Illinois (217)352-6511 x676
"See, when the GOVERNMENT spends money, it creates jobs; whereas when the
 money is left in the hands of TAXPAYERS, God only knows what they do with it.
 Bake it into pies, probably.  Anything to avoid creating jobs." -- Dave Barry

-- 
Irina Kosinovsky [irina at zorro.cecer.army.mil]
Construction Engineering Research Labs, US Army Corps of Engineers
Champaign, Illinois (217)352-6511 x676
"See, when the GOVERNMENT spends money, it creates jobs; whereas when the