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Hello Russell,
It looks like in your PRJ entry, you
used US Survey Feet instead of Meters.
8 is the code for Feet, while 7 is the code
for Meters. That could place your False
East and North such that when bringing in
coordinates, they may go North and East.
I did a quick check, given the right combination
of Feet/Meters confusion I can get some test
points on the island to show up relatively
near 1° S, 54° E. Try this
PRJ entry, the change to Meters is the only
alteration:
"Russells Botched Laborde using Meters", 7, 147, 7, 46.43722917, -18.9, 18.9, 0.9995, 400000, 800000 Regards, Sam Knight Applications Specialist Blue Marble Geographics [EMAIL PROTECTED] Ph: 800-616-2725 ext. 24 Ph: 207-582-6747 ext. 24 Fax: 207-582-7001 http://www.bluemarblegeo.com and http://www.beyondgeo.com ----------------------- Original
Message -----------------------
From: "Lawley, Russell S"
<[EMAIL PROTECTED]>
To: "MapInfo-L \(E-mail\)"
<[email protected]>
Date: Thu, 23 Mar 2006 09:01:46
-0000
Subject: [MI-L] projection
woes for madagascar.
Hi, I am trying to bring in some geology data for Madagascar, as usual the data has been captured from a paper map via a non-projection gis (u kno who). so whilst i have map coordinates that 'make sense' i actually only have a map in Non-earth projection. From the original paper maps i can see i am supposed to be using a Laborde projection, and a fabulous article by Clifford Munier provides all the data (i think) that my paper maps did not..but i am now stuck...because although i appear to have all the data i need to write my own projection, i am obviously getting it all wrong because my version of madagascar is sitting about 1 degree south of the equator and about 10 degrees further east than it should be,,,,, here are the projection input data i am using..I suspect i have misread something somewhere, but at 2:20am this morning i was all for taking a spade to madagascar and digging it all up to move it to 54e, 1s.. projection
oblique Mercator (hotine) mapinfo prj file entry = "Russells Botched Laborde", 7, 147, 8, 46.43722917, -18.9, 18.9, 0.9995, 400000, 800000 Has anyone got any ideas as to what i have missed? regards r ********************************************************************* This message (and any attachments) is for the recipient only. NERC is subject to the Freedom of Information Act 2000 and the contents of this email and any reply you make may be disclosed by NERC unless it is exempt from release under the Act. Any material supplied to NERC may be stored in an electronic records management system. ********************************************************************* _______________________________________________
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