[OSRS-PROJ] proj4 parameter question regarding UTM

[Hersman, William]

Then that is what you are getting.  There is a limitation in accuracy you should be aware of when you jump several zones from true zone with a mercator projection.  It has to do with how many terms are carried out in the algorithm.  I'm not qualified to explain it, but be aware that some projections are more appropriate than others, depending on the shape and length of the area you are trying to use project into a single zone.

-----Original Message-----
From: owner-osrs-proj at remotesensing.org
[mailto:owner-osrs-proj at remotesensing.org]On Behalf Of pw
Sent: Friday, February 06, 2004 3:17 PM
To: osrs-proj at remotesensing.org
Subject: Re: [OSRS-PROJ] proj4 parameter question regarding UTM


Hello,

Yes, I want pseudo values in UTM zone 10 projection.
I guess I could make a table of meridians and use tmerc instead.

Peter

> That lat, long is in zone 7.  You are trying to get a psuedo-zone value, 3
zones away.
>


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