Ralph, thanks very much. It’s late here, but this will get my full attention shortly! Graham
> On 3 Apr 2020, at 23:27, Ralph DiMola via use-livecode > <use-livecode@lists.runrev.com> wrote: > > Graham, > > This my distance calculation for what it's worth. > > Function distance lat1, lon1, lat2, lon2, unit > -- Calculate Distance between to points > -- > --lat1, lon1, lat2, lon2 are in deg.fractionalDegrees > -- Unit > -- if empty then miles > -- K = kilometers > -- N = nautical miles > local theta > local dist > > Put lon1 - lon2 into theta > put Sin(deg2rad(lat1)) * Sin(deg2rad(lat2)) + Cos(deg2rad(lat1)) * > Cos(deg2rad(lat2)) * Cos(deg2rad(theta)) into dist > > put Acos(dist) into dist > put rad2deg(dist) into dist > put dist * 60 * 1.1515 into dist > > switch unit > case "K" > put dist * 1.609344 into dist > case "N" > put dist * 0.8684 into dist > end switch > > Return dist > > End distance > > > Function rad2deg rad > Return rad / PI * 180.0 > end rad2deg > > > Ralph DiMola > IT Director > Evergreen Information Services > rdim...@evergreeninfo.net > > > -----Original Message----- > From: use-livecode [mailto:use-livecode-boun...@lists.runrev.com] On Behalf > Of Graham Samuel via use-livecode > Sent: Friday, April 03, 2020 3:49 PM > To: How to use LiveCode > Cc: Graham Samuel > Subject: Re: Getting started with geographical coordinates > > This is cheeky but I can’t run up my mobile simulation today - can someone > tell me the format of the geographical coordinates produced by > mobileSensorReading et al. I mean, is say latitude just one integer showing > seconds, or is it deg, min, sec - and are fractional seconds returned (so, > floating point)? I shall find out for myself eventually but it would help a > little to know now. AFAIKS there’s nothing in the LC documentation about it. > > Graham > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
