[OpendTect_Users] State Planes

[Bob Van Nieuwenhuise]

Hello Tom:

If you are working with SPPS, you can obtain conversion software for free from NOAA's NOS NGS. It is freeware on the internet and it is a little tricky to use but once you get the hang of it, it is quite easy and very useful. This gives you a way to handle graticules (geographic coordinates: latitudes and longitudes) and grids (Cartesian X, & Y coordinates)  and covert between them if it is in the SPPS zones using appropriate Spheroids/Ellipsoids.

Regards,

Bob
Robert E. Van Nieuwenhuise, PG #2335
Technical Sales Advisor, Senior, Americas
[Description: PDM_Logo_RGB - registered]
820 Gessner, Suite 400
Houston, TX 77024 USA
Bob.VanNieuwenhuise at pdgm.com
+1.713.393.4108 direct
+1.713.393.4802 fax
www.pdgm.com


From: users-bounces at opendtect.org [mailto:users-bounces at opendtect.org] On Behalf Of Paul de Groot
Sent: Friday, December 02, 2011 2:49 AM
To: Donahoe, Thomas
Cc: users at opendtect.org
Subject: Re: [OpendTect_Users] State Planes

Hello Tom,

Geographic referencing in OpendTect is done in X,Y (=Cartesian) co-ordinates. OpendTect does not know which projection system was used to create the X,Y co-ordinates. The State Plane Projections System is a set of 124 geographic zones used in the USA, see http://en.wikipedia.org/wiki/State_Plane_Coordinate_System). The SPS projections generate Cartesian co-ordinates, so the answer to your question is yes: OpendTect does work work with State Plane Projections.

However, OpendTect does not support any projection systems itself. If you don't have X,Y co-ordinates for your data you will have to do the projection to State Plane co-ordinates with other software.

Best regards,

Paul.

--
Paul de Groot
President
dGB Earth Sciences, Nijverheidstraat 11-2, 7511 JM Enschede, The Netherlands.
Tel. +31 53 43 15 155, Fax +31 53 43 15 104.
paul.degroot at dgbes.com<mailto:paul.degroot at dgbes.com>, www.dgbes.com<http://www.dgbes.com/>, www.opendtect.org<http://www.opendtect.org/>.
On Thu, Dec 1, 2011 at 4:42 PM, Donahoe, Thomas <ThomasDonahoe at cnxgas.com<mailto:ThomasDonahoe at cnxgas.com>> wrote:
All,

I am curious if there is a way to work with state plane projections within OpendTect.

Thanks for the help.

Tom Donahoe
Associate Geophysicist
CONSOL Energy, Inc.
280 Indian Springs Rd., Suite 333
Indiana, Pennsylvania 15701
724.464.2944<tel:724.464.2944> (office)
ThomasDonahoe at consolenergy.com<mailto:ThomasDonahoe at consolenergy.com>


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