[R-sig-Geo] function to convert to/from U.S. State Plane Coordinates?

Michael Sumner mdsumner at gmail.com
Tue Sep 17 01:25:44 CEST 2013

State plane is either UTM or Lambert Conformal Conic ("+proj=lcc"),
but this is a *family* (of families) of projections, not a specific
coordinate system. You'll need to be more specific by finding from an
authority which actual "State Plane" projection you need.


spatialreference.org is a good place to look if you are lacking detail:


Often there is metadata present in data files so if you have those it
might be worth describing them, and trying tools in rgdal to find this
out. An EPSG code likely to be the most concise identifier, but it
could be PROJ.4 or WKT or something else that your colleagues might

Cheers, Mike.

On Tue, Sep 17, 2013 at 9:09 AM, Waichler, Scott R
<Scott.Waichler at pnnl.gov> wrote:
> Erin, thanks, I'm getting closer.  Rgdal's projInfo() lists UTM, which I believe is closely related to the State Plane Coordinate system, but I still don't see a direct transformation to SPC in R.  --Scott Waichler
>> Could you mean spTransform from rgdal, please?
>> ________________________________________
>> From: r-sig-geo-bounces at r-project.org [r-sig-geo-bounces at r-project.org] on
>> behalf of Waichler, Scott R [Scott.Waichler at pnnl.gov]
>> Sent: Monday, September 16, 2013 4:33 PM
>> To: r-sig-geo at r-project.org
>> Subject: [R-sig-Geo] function to convert to/from U.S. State Plane
>> Coordinates?
>> Hi,  Does an R function exist to convert to and from the State Plane
>> Coordinates system used in the U.S.?  My search with Rseek was fruitless.
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Michael Sumner
Hobart, Australia
e-mail: mdsumner at gmail.com

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