[Xastir] Script to cache some maps

Kurt ksaves2 at sbcglobal.net
Thu Nov 19 16:38:01 EST 2015


Those are the magic words. "done locally no network needed)  :-)  Kurt KC9LDH
      From: Andrew Errington <erringtona at gmail.com>
 To: Xastir - APRS client software discussion <xastir at lists.xastir.org> 
 Sent: Wednesday, November 18, 2015 10:46 PM
 Subject: Re: [Xastir] Script to cache some maps
   
Surely the ultimate solution is to download vector data and have a
well-written dbfawk which shows the elements you are most interested in?

Vector data takes up much less space than tiles, and setting up a tile
server is not actually straightforward (plus, you have to download the
vector data to make your own tiles anyway).

I run OSMAnd on my phone.  It uses vector data and renders it on the fly,
so all my mapping (and routing) for the whole country is done locally (no
network needed).

73,

Andrew

On 19 November 2015 at 13:23, Skyler F <electricity440 at gmail.com> wrote:

> >
> > Interesting.. so I wonder:
> >
> >  - Where you would need to run that program in to places the files in
> the
> > correct Xastir path
> >      ~/.xastir/OSMtiles/mapnik/
> >
> >  - Would the resulting files be in the proper format to Xastir to use
> them
> >      looks like it since it writes png and Xastir uses png
> >
> >
> > There doesn't seem to be any network / tile throttling support so I guess
> > one would need to specify one region at a time, sleep a while, do the
> next
> > zoom, etc.  Looks pretty promising though!
> >
> > --David
> > KI6ZHD
> >
>
>
>
> So the ultimate solution for the raspberry pi folks would be to run a tile
> server on their home computer (so there is no violation of terms and you
> can download as many tiles as needed), and then run this script to cache as
> many maps as needed onto their pi. I think that is the way to go!
>
> Heck, you could probably even set it up so every time the pi connects to
> your home network (back from your trip when you used the maps), it
> automatically downloads the latest maps from your home tile server.
>
>
> I'm sure with time, there might be some hams with acces to big data centers
> and might be willing to serve a OSM server for hams.
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>
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