[Xastir-dev] Plotting a GPS point on a map

[Brian D Heaton]

Michael,

	Why reinvent the wheel?  Why not just use Xastir or GPSdrive for
map/position display and then overlay your control/flight
instrumentation on that?  You could strip a lot of stuff out of Xastir
to slim it down if need be.

			THX/BDH



On Mon, 2004-02-16 at 07:43, Michael Pawlowsky wrote:
> Hello,
> 
> I'm working on a OSI ground station software package
> for amateur UAVs and one of the views is a map view
> that plots the planes position on it.
> I figured you guys are experts in this area, so I was
> hoping I could ask you a few questions.
> 
> For the GPS coordinates I'm converting everything in
> to seconds up to a precision of 1/100th of a second as
> a whole number.
> I believe this is what you are also doing.
> 
> Naturally I have the NW and SE coordinates of the map.
> All information is using WGS84.
> 
> Plotting longitude is no problem, but of course
> latitude is. 
> So I was hoping you would share with me your formula
> to do this.
> I've seen several on the net, but I'm sure you guys
> have this already well worked out.
> 
> The second function I'm looking for is to get the
> distance (in Km preferred but anythign will do) to
> calculate the distance between 2 points.
> 
> Thank you for any assistance you can provide.
> 
> 
> Regards,
> Michael Pawlowsky
> R/C Pilot Group
> 
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