[Xastir] Script to cache some maps

[Skyler Fennell]

Is the tiling system with the zoom/x/y.png standard for non OSM like the ArcGIS topo?

Does this system work cross between maps, ex. Does 5/5/5.png have the same lat long bounds between any tile map?

Kd0whb

> On Nov 19, 2015, at 10:50 AM, Fred Hillhouse Jr <fmhillhouse at comcast.net> wrote:
> 
> 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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