Plot GPS routes on a 2d map

Programming Questions

martin.sw..

in Programming Questions • 2 years ago

Hello! I've had a good search around so I'm reasonably confident this isn't a very common question with a well defined answer.

I have time series latitude,longitude pairs which, when ordered together, construct a route. I would like to draw these routes on a 2d plane (preferably a map, pinned to certain coordinates) so that they may be simultaneously 'played' to show the progress of the routes on the same map.

Has this been done before, or does anyone have any clues about where to begin with this idea?

Thanks!

Replies(3)

Jesse Sco..

Re: Plot GPS routes on a 2d map

2 years ago

Tom Carden had a GPX library that I've never managed to get to work, I think because of the proprietary GPX files from his recorder, but it's more about parsing data, not how to use it...

I've done some stuff - and use other's code - that plots world points (there's a few examples of this on the forum) in both 2D and 3D, but they always have a definable border (ie. a sphere with a set diameter, etc.)

Someone - I think Andreas Schlegel (sp?) did a custom sketch for Dan Belasco Rogers a few years back, which he uses for his GPS tracings .. I've talked to Dan about it, but it's not public code.

I would guess you just need to define what GPS points sit a '0,0' , 'width,0' , 'width,height' , and '0,height' respectively, then you can interpolate/map the ensuing points from there ? That's what I've always assumed to be the first attempt I would make, but I've never really dug into it.

I'm quite interested in this too, as I've been doing a lt of GPS programming with Android lately, and I also have some interesting GPS datasets... so keep this thread posted if you figure anything out!

~ J

PhiLho

Re: Plot GPS routes on a 2d map

2 years ago

As said, search GPX, particularly in the old forum, you will find some code snippets.

Jesse Sco..

Re: Plot GPS routes on a 2d map

2 years ago

Always forget about the old forum...

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