[Xastir] Script to cache some maps

[Curt Mills]

According to GMail here I added 3 attachments. Don't know why you're
not seeing them.

Regarding the quad-core: It will use one heavily while rendering the
maps, while the other cores do other Linux stuff and stay out of the
way. So it's nice to have at least 2 cores for that reason.

On Thu, Nov 19, 2015 at 2:36 PM, Jason Godfrey <godfreja at gmail.com> wrote:
> Curt, did you intend to attach pictures or a link? I don't see anything.
>
> Do you find the quad- core actually makes a difference? Years ago I looked
> at parallelizing the shapefile rendering, but I never found a way that
> wasn't more invasive than i was willing to undertake.
>
> - Jason
>
> On Thu, Nov 19, 2015 at 4:16 PM Curt Mills <curt.we7u at gmail.com> wrote:
>
>> Yea. Here are several, but it looks like I don't have OSM data on the
>> work machine. I do however have Tiger 2004 ESRI Shapefile format maps,
>> so I enabled those and did several snapshots. Looks like I might need
>> to do some local tweaks to get better looking fonts, but these render
>> fast! Of course this is a quad-Xeon machine which makes a little bit
>> of a difference...
>>
>> On Thu, Nov 19, 2015 at 1:51 PM, David Ranch <xastir at trinnet.net> wrote:
>> >
>> > Hey Curt,
>> >
>> > Could you send us a screen capture of what your rendered ESRI Shapefile
>> data
>> > looks like?  I personally don't necessarily need ultra pretty tiles but I
>> > definitely don't need the complexity and resource hungry requirements of
>> > setting up a local tile server.  If my old little Garmin handheld GPS
>> can do
>> > maps pretty well from a little SD card, why can't Xastir do this too?
>> There
>> > has to be a decent compromise somewhere in this whole thread.
>> >
>> > --David
>> > KI6ZHD
>> >
>> >
>> > On 11/19/2015 01:44 PM, Curt Mills wrote:
>> >>
>> >> What he said...
>> >>
>> >> I prefer the fastest/smallest vector dataset that will do the job. It
>> >> may not be the prettiest when rendered, but I'm more interested in
>> >> useful data and ultimate speed than "pretty". For me that currently
>> >> means OSM vector data in ESRI Shapefile format, with the appropriate
>> >> dbfawk's to render it the way I want in Xastir. I don't use, and don't
>> >> desire, tiles. I would like to have contour lines as well someday, so
>> >> may investigate adding support for USGS DEM's at some point, or
>> >> perhaps I can find ESRI Shapefile maps with the countour lines already
>> >> drawn for me, which is perfectly adequate (and faster).
>> >>
>> >>
>> >> On Thu, Nov 19, 2015 at 4:41 AM, Jason KG4WSV <kg4wsv at gmail.com> wrote:
>> >>>
>> >>> 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
>> >>> _______________________________________________
>> >>> Xastir mailing list
>> >>> Xastir at lists.xastir.org
>> >>> http://xastir.org/mailman/listinfo/xastir
>> >>
>> >>
>> >>
>> >
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>> > http://xastir.org/mailman/listinfo/xastir
>>
>>
>>
>> --
>> Curt, WE7U
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-- 
Curt, WE7U