Hi,
You could try the proj4 site: http://proj.maptools.org/
Or you could buy the Snyder Manual from the USGS
"Map Projectsions a Working Manual" Paper 1395
There used to be a Wolfram Mathematica site with extensive formulae
for geographic coordinate transforms but I cannot find it right now?
Randy
-----Original Message-----
From: Wang, Shaowei [mailto:[EMAIL PROTECTED]
Sent: Friday, September 17, 2004 9:13 AM
To: [EMAIL PROTECTED]
Subject: [svg-developers] convert from NAD 27 to lat/long ?
I need help!
I have a SVG map projected by NAD27/Albers and I can get coordinates from
it, for example (-252189, 196520). But I need get Latitude/Longitude for any
point on map. Can anyone tell me the formula to convert coordinates from NAD
27(see below for details) to Latitude/longitude?
Thanks,
--------------------------------------------------------------
Datum: NAD 27
Projection: Albers
Units: Meters
1st Std. Parallel: 34 00 00 (34.0 degrees N)
2nd Std. Parallel: 40 30 00 (40.5 degrees N)
Longitude of Origin: -120 00 00 (120.0 degrees W)
Latitude of Origin: 00 00 00 (0.0 degrees)
Latitude of Origin: 00 00 00
False Easting (X shift): 0
False Northing (Y shift): -4,000,000
--------------------------------------------------------------------------
Shaowei Wang
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