Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!ukc!stl!crosfield!adf From: adf@crosfield.co.uk (alex france) Newsgroups: comp.binaries.ibm.pc.d Subject: Re: Microsoft Flight sim and lat/long coords Summary: What are these wacky co-ords that MS use Keywords: Flight Simulator, MS Flight Sim Message-ID: <10281@suns7.crosfield.co.uk> Date: 13 Jun 91 08:12:52 GMT References: <9013@pbhyf.PacBell.COM> Reply-To: adf@crosfield.co.uk (alex france) Followup-To: comp.binaries.ibm.pc.d Organization: Crosfield Electronics, Hemel Hempstead, United Kingdom. Lines: 33 In article <9013@pbhyf.PacBell.COM> jcwasik@PacBell.COM (Joe Wasik) writes: >In article kemp@convex.com (Phil Kemp) writes: >>Does anyone know how to convert a latitude and longitude designation >>to the internal coordiantes for the M/S flight sim 4.0... > >Excellent question. Someone please answer. Yes, I couldn't agree more. I've recently been playing with the scenery editor adding my local field correctly and local visual reporting points. I started from SubLogic's Western Europe scenery disk which has the runways wrong for my local field (Cranfield) and doesn't have the VOR on the field, etc. Now, when I slew to the field the Latitude comes out OK (i.e the North bit), but the longitude is wrong by a few degrees. I put this down to the 'grid canted by -8 degrees to map onto Lambert Conformal Conic' comment. So, I stuck to putting in the scenery in MS co-ords relative to where it thought my local field was. As far as I can work out, 0.0001 MS Co-ord units ==> 1 inch (which gives 6.336 ==> 1 st mile, 7.2 ==> 1 nt mile) These seem to work out about right for objects within 5 to 10 miles from a known reference, but I could really do with the maths to convert Long/Lat direct into the co-ords for further afield stuff. Anyone know? Alex France, Crosfield Electronics, | Phone: +44 442 230000 xt.3541 Hemel Hempstead, HP2 7RH, England. | Fax: +44 442 232301 adf@crosfield.co.uk or mcsun!cel!adf@uunet.uu.net