[GRASSLIST:4159] Re: state plane - newbie

[Eric G. Miller]

On Thu, Jul 25, 2002 at 04:59:58PM -0600, Richard Greenwood wrote:
> Eric,
> 
> Thanks to your help I'm quite a bit closer that I was. Here is what I've 
> done, please tell me if you seen anything obviously stupid. I'm working in 
> Wyoming NAD83 state plane using US Survey feet.

Wyoming's legislated unit of measure for the "Wyoming Coordinate
System NAD 83" is meters.  You sure survey feet are right?

http://legisweb.state.wy.us/statutes/titles/title34/chapter25.htm

> My g.region -l now shows the correct lat/lon for the location I
> created and things look correct when I import them. However areas and
> distances are completely wrong. ( A real world distance of 660 feet is
> displayed as ~1450 meters and a 10 acre polygon was reported as ~105
> acres) So I guess I'm still doing something wrong. Partly I'm not sure
> how and when the PROJ_UNITS gets called into play.

Hmm, I don't know what's up with those measurements...

-- 
Eric G. Miller <egm2 at jps.net>