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------- Forwarded message ------- From: Tim Smith <[EMAIL PROTECTED]> To: Stefan Majtan <[EMAIL PROTECTED]> Subject: RE: MI-L Distance & Bearing Calculation Date: Thu, 8 Apr 2004 13:09:21 +0100
Hi,
Thanks for the links Stefan. I was hoping this would have been part of MapInfo. I need reliable software that can do this calculation. It does not have to be MapInfo.
I have seen a few java programs on the internet that do this, but I'm not sure if they are correct. I have used several 'Bearing/Distance' calculators and although they agree on distance, they can vary in their bearing (by about 3 degrees). What could be the reasons for this difference (as they are all using wgs84). Could it be that the bearing is taken from magnetic north? What should the bearing be taken from? Not sure - hope someone can shed some light!
Cheers
Tim
-----Original Message----- From: Stefan Majtan [mailto:[EMAIL PROTECTED] Sent: 07 April 2004 12:38 To: Tim Smith; MI-list Subject: Re: MI-L Distance & Bearing Calculation
Dear Tim,
You can try this:
1. Go to directionsmag (http://www.directionsmag.com/files/) and in search
section write bearing. Sean Reese wrote application which you need. 2. or if you need ONLY distance, you can find SQL statement for it in
older mails on this list.
3. or if you have a huge number of the points, you can download CalcDist
PRO (from http://www.terris.sk) which will do the job instead you.
Hope this help you.
Regards Stefan Majtan
************************************************************************** TERRIS GIS Applications Development Grid Analyser - raster GIS for native MapInfo grid
Pod záhradkami 24 909 01 Skalica SLOVAKIA http://www.terris.sk **************************************************************************
On Wed, 7 Apr 2004 12:23:40 +0100, Tim Smith <[EMAIL PROTECTED]> wrote:
How do I use MapInfo to calculate the distance and bearing between two points using the WGS-84 projection?
I don't know much about MapInfo (having just purchased it). I'm due to go on a training course, so hopefully I won't be asking such simple questions in the future.
Thanks in advance for any help.
All literature contained within this message and/or attached, is the opinion of myself and does not reflect the opinion of the company.
Tim Smith Software Engineer
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