[Xastir] Script to cache some maps

[Fred Hillhouse Jr]

I run Windows and use APRSIS32 and I use more than the OSM tiles (e.g.,
ArcGIS Topo).

I have used an USB hard drive for tile storage while mobile. You can get
really big ones for lower cost these days. Some might argue an SSD makes
more since. I am leery of that since I have had several USB Flash Drive,
plus, they are costly.

If you are rendering your own tiles, then plug in a portable hard drive and
copy (backup) the latest tile revisions to the portable hard drive.

Most of the time, space is not all that important. I have less than 10GB of
tiles and I do look around the world when something interesting is
happening. I am in between projects looking to roll out my newest
configuration.

I wrote an application to download the tiles I need. I started first with
something that simply used a GPX file as the source. I haven't finished a
routine to fetch tiles within a polygon. That would be useful for counties,
cities, etc. A whole state would be extreme.

I don't know if Xastir can actually use tiles but it seems like a logical
extension if not.

Best regards,
Fred N7FMH



-----Original Message-----
From: xastir-bounces at lists.xastir.org
[mailto:xastir-bounces at lists.xastir.org] On Behalf Of Jason KG4WSV
Sent: Thursday, November 19, 2015 7:42 AM
To: Xastir - APRS client software discussion
Subject: Re: [Xastir] Script to cache some maps

On Wed, Nov 18, 2015 at 10:23 PM, Skyler F <electricity440 at gmail.com> wrote:

> 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!
>

This sorta sounds like the worst of both worlds to me - you are still tied
to your home network connectivity to get maps, but you additionally have
all of the hassles of running a server just to keep maps available.  ugh.

I'm with Andrew, my "ultimate" is vector data that xastir can ingest
directly.

The only reason for me to set up a map server is if I can't get said vector
data formatted for xastir.  There's a slight advantage to sourcing OSM
data, since that's the FOSS GIS data du jour.  A portable tile server (e.g.
mobile, incident command post, remote event HQ, etc) would likely require a
fairly well endowed computer (high end laptop, potent SBC like an Intel
NUC, or _maybe_ a higher end ARM like a Jetson TK1).  I seriously doubt
Pi/beaglebone/etc is going to get the job done as a tile server, they're
just too anemic computationally.

-Jason
kg4wsv
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