See my column on the Grids and Datums of Romania in PE&RS, May 2001
available in pdf format from:
www.ASPRS.org/resources/grids
Clifford J. Mugnier C.P.,C.M.S.
National Director (2006-2008)
Photogrammetric Applications Division
AMERICAN SOCIETY FOR PHOTOGRAMMETRY AND REMOTE SENSING
and
Chief of Geodesy
Center for GeoInformatics
LOUISIANA STATE UNIVERSITY
Dept. of Civil Engineering
CEBA 3223A
Baton Rouge, LA 70810
Voice: (225) 578-8536
Facsimile: (225) 578-8652
-----------------------------------------------------------
http://www.ASPRS.org/resources/GRIDS
http://www.cee.lsu.edu/facultyStaff/mugnier/index.html
-----------------------------------------------------------
Grid lines and tics on a map don't necessarily bear any relation to the
actual projection used, so don't count on that.
Googling romania stereographic 70 led me to
http://www.geocities.com/mapref/prj/rm/rm.html
which shows:
• Stereographic 70; Krassowskij-Ellipsoid; System42
________________________________________
Projection TRANSVERSE
Zunits NO
Units METERS
Spheroid KRASOVSKY
Xshift 0.0000000000
Yshift 0.0000000000
Parameters
1 /* Projection type < 1 | 2 >
6378956.594 /* radius of the sphere of reference
25 0 0.000 /* longitude of center of projection
46 0 0.000 /* latitude of center of projection
0.000 /* false easting (meters)
0.000 /* false northing (meters)
________________________________________
It's odd that the word "Transverse" is stuck on a projection labeled
"stereographic". Perhaps they mean Transverse Mercator (i.e. misusing
"stereographic" to mean "conformal") or perhaps a rotated stereographic
(i.e. you have to experiment with the Azimuth parameter in MapInfo)
HTH
Spencer
________________________________________
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ian
Farrelly
Sent: Thursday, July 27, 2006 4:03 AM
To: [email protected]
Subject: [MI-L] Romanian Projection Systems
Hello All,
I am having trouble trying to deal with some maps in a Romanian projection.
I am unsure of the projection system (as it is not identified on the map)
but have been advised that the maps are of a vintage consistent with the
use
of Stereo(graphic) 70. However, what little information I can dig up about
this projection suggests that the base unit is in metres whereas the hard
copy maps have grid lines in lat/long (degrees/minutes/seconds).
Has anyone come across Stereo 70 previously or indeed have a projection
description which I can insert into the Mapinfo.prj file. I’m told that
ArcGis has a Stereo 70 projection capability. Possibly someone has used
the
ArcGis projection parameters to develop a MapInfo projection.
Any help would be great!
Thanks,
Ian
____________________________________________
Ian Farrelly,
Aurum Exploration Ltd.,
Aurum House,
40/41 Watergate Street,
Navan,
Co. Meath,
Ireland.
Tel: 00 353 (0)46 9059959
Fax: 00 353 (0)46 9077936
E-mail: [EMAIL PROTECTED]
_______________________________________________
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