Thanks to John Gray and Cliff Mugnier for their responses to my question (see bottom of this e-mail). John hit the nail on the head and pointed me to: http://www.bmr.gov.au/geophysics/geomag/rf/agrfform.html If possible I will try and post the input values to that page on-line and read the results back from he returned HTML. John said: "I would recommend you contact the Australian Department of Land Administration - <www.dola.wa.gov.au> - or your own Victoria Department of Natural Resources and Environment - <www.osg.vic.gov.au/> for some help. If they can't help you - try our U.S. Geological Survey - <www.usgs.gov> . " Cliff said: "http://www.NIMA.mil used to have some stuff that you could download, but it was so much source code, it would choke a horse! What you propose is a whole lot easier said than done. I used to telephone the GeoMagnetism Branch of NOAA in Boulder, Colorado for specific tabulations of Magnetic Declinations of particular spots, but it's pretty hairy to try yourself. People get Post-Docs in this stuff ...!!" Thanks, Chris Perry Systems Development CoOrdinator Parks Victoria Melbourne, Australia Ph: 61 3 9816 6800 Fax: 61 3 9816 9876 [EMAIL PROTECTED] -----Original Message----- From: PERRY Chris Sent: Monday, 20 March 2000 16:07 To: MapInfo-L (E-mail) Subject: Magnetic bearings Hi listers, Can anyone point me to web resources or applications / formulas / methodologies for converting magnetic bearings to grid bearings (AMGs particularly). What I want to do is create an application which will automatically convert between magnetic and grid bearings if possible (ie automatically calculate the magnetic declination at the current date and location...) ---------------------------------------------------------------------- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
