Path: news.mathworks.com!newsfeed-00.mathworks.com!newscon02.news.prodigy.net!prodigy.net!news.glorb.com!postnews.google.com!h11g2000prf.googlegroups.com!not-for-mail
From: rodney.thomson@gmail.com
Newsgroups: comp.soft-sys.matlab
Subject: Re: Converting UTM to Geo-coordinate
Date: Tue, 12 Feb 2008 16:15:43 -0800 (PST)
Organization: http://groups.google.com
Lines: 42
Message-ID: <1c055d8f-4f5e-4882-b6b2-18134430480b@h11g2000prf.googlegroups.com>
References: <fospdi$bff$1@fred.mathworks.com> <fot9qh$egl$1@fred.mathworks.com>
NNTP-Posting-Host: 210.193.170.117
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Trace: posting.google.com 1202861743 26071 127.0.0.1 (13 Feb 2008 00:15:43 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Wed, 13 Feb 2008 00:15:43 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: h11g2000prf.googlegroups.com; posting-host=210.193.170.117; 
User-Agent: G2/1.0
X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.11) 
X-HTTP-Via: 1.0 frem-prox1.nautronix:8080 (squid/2.5.STABLE12)
Xref: news.mathworks.com comp.soft-sys.matlab:450994



On Feb 13, 8:24 am, "Pete sherer" <t...@abg.com> wrote:
> "Pete sherer" <t...@abg.com> wrote in message
>
> <fospdi$bf...@fred.mathworks.com>...
>
> > I am looking for a way to convert the UTM to
> > geo-coordinates.  Are there any existing functions to do
> > such task?  Thank you for your suggestion.
>
> > SH
>
> If I tried using the UTM2DEG.m file, it looks like I need to
> know the right UTMzone. Are there anyway to know it
> automatically? For example, the
> Lat=6597500;
> Lon=348100;
>
> By changing the zone, I receive the following Lat/Lon
>  UTMZone: 17 J; Lat= -30.7457, Lon= -82.5868
>  UTMZone: 18 J; Lat= -30.7457, Lon= -76.5868
>  UTMZone: 19 J; Lat= -30.7457, Lon= -70.5868
>  UTMZone: 20 J; Lat= -30.7457, Lon= -64.5868
>  UTMZone: 21 J; Lat= -30.7457, Lon= -58.5868
>  UTMZone: 22 J; Lat= -30.7457, Lon= -52.5868
>  UTMZone: 23 J; Lat= -30.7457, Lon= -46.5868
>  UTMZone: 24 J; Lat= -30.7457, Lon= -40.5868
>
> I would appreciate your suggestions

UTM positions require 4 fields of information to be converted to a
distinct latitude and longitude
- eastings (x)
- northings (y)
- zone
- hemisphere

Each of things can be derived from a single lat/long value.

You see, UTM coordinates describe a 6 degree slice of the Earth in
either the norther or southern hemisphere. So an Easting/Northing
pair, there are 120 possible positions that relate to those values.
you must know the zone and hemisphere.