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)
datum Tananarive_1925
spheroid international 1924
Origin long 46.43722917
Origin Latt -18.9
Azimuth 18.9
scale factor 0.9995
false east 400000
false north 800000
units m.
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.
*********************************************************************
_______________________________________________ MapInfo-L mailing list [email protected] http://www.directionsmag.com/mailman/listinfo/mapinfo-l
