Hi Cathy! This has been asked before, and I do not think there is an easy way to do this. I have a recent case and can compare the defining strings. A shapefile I have in a swedish common projection has the following prj info (in one string, disregard e-mail wrapping): PROJCS["RT90 2",GEOGCS["RT90",DATUM["D_RT90",SPHEROID["Bessel_1841",6377397.155,299.1528128254262]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["false_easting",1500000.0],PARAMETER["false_northing",0.0],PARAMETER["central_meridian",15.8082777778],PARAMETER["scale_factor",1.0],PARAMETER["latitude_of_origin",0.0],UNIT["Meter",1.0]]
This relates to the following string in the mapinfow.prj file: "Svenska rikssystemet RT 90 2,5 gon väst (standard)\p3021", 8, 112, 7, 15.8082777778, 0, 1, 1500000, 0 I have created the shapefile using Universal Translator, whose coordsys.db file defines the same projection: RT90-2.5V|RT90 (Rikets Triangulering 1990) 2,5 gon V; Meters (EPSG #2400)|EUROPE|RT90||TM|METER So all you have to do is to figure out which parameters connect, and what lies behind esoteric strings such as EPSG#2400, GEOGCS and so on, Some are self-evident, others more obscure. Of course, this does not strike me as very efficient since UT obvoiusly knows how to do this, so my suggestion is to use UT to create a library of the common projections you want to use. Hälsning / Best regards Mats.E ________________________ FB Engineering AB Södra Förstadsgatan 26 211 43 Malmö Tel: 040-660 25 50 Mobil: 0705-27 60 27 Fax: 040-660 25 99 [EMAIL PROTECTED] www.fbe.se Cathy Coldrey <[EMAIL PROTECTED]> Sänt av: [EMAIL PROTECTED] 2005-12-15 15:47 Till [email protected] Kopia Ärende [MI-L] custom projection Hi List, I was wondering if a tool or a method existed to translate a arcview projection (.prj file) into mapinfo projection format? does anyone have any experience with this sort of task? Thanks in advance for your help Cathy Geomatics Specialist Komex Europe Phone - 0117 925 1304 Fax - 0117 910 5139 Registered Office 3-8 Redcliffe Parade West Bristol, BS1 6SP Registered No. 2718875 IMPORTANT NOTICE: This email is confidential, may be legally privileged, and is for the intended recipient only. Access, disclosure, copying, distribution, or reliance on any of it by anyone not the intended recipient is prohibited and may be a criminal offence. Please delete if obtained in error and email confirmation to the sender. _______________________________________________ MapInfo-L mailing list [email protected] http://www.directionsmag.com/mailman/listinfo/mapinfo-l _______________________________________________ MapInfo-L mailing list [email protected] http://www.directionsmag.com/mailman/listinfo/mapinfo-l
