[Xastir] GeoPDF try

ZPO geekdownrange at gmail.com
Mon Dec 21 18:06:00 EST 2015 

I used: http://geonames.usgs.gov/apex/f?p=262:1:0

Which allowed me to easily request a listing for a full state, 24K scale,
and USTopo. From there you can download a CSV and strip it down to only the
current release (sort on "Version") and delete all the fields other than
the download link. From there I fed it into wget as: "wget -i filename -nd"
to download all the current GeoPDF USTopo files for a given state. I let it
run overnight. The map downloads ran at about 1.2-1.5Mb/s whether I had 1
state downloading or 5 states downloading concurrently. I let them run
overnight. 5 states completed in something around 10 hours (WA, OR, ID, MT,
UT)

I've been reading all the GeoPDF conversion threads with interest and
thought it should make a good project to leave running in the background
over the holidays. My end goal is a set of just the DRGs and a set of just
the Orthophotos converted to GeoTIFF. I will then publish them via
bittorrent and a private tracker so they can be downloaded by everyone and
used without having to go through all the steps.

Question - should I make them available as state-level bundles (single huge
file to download), or as individual files (1K-2K torrent files for larger
states)? Perhaps both? I'd like to make them efficient for others to grab
and seed once they've downloaded them.

Onward! :)

73-KY9K/Brian


On Mon, Dec 14, 2015 at 8:34 AM, Lee Bengston <lee.bengston at gmail.com>
wrote:

> First go here: http://nationalmap.gov/ustopo/index.html
>
> Then select "Download Maps (map store)"
>
> For now leave the map selection at '7.5 and 15 minute', and leave the
> bullet selection to "Navigate".  Zoom in and drag the US map to your
> desired location.  When you zoom in far enough, you will see a rectangular
> grid; each rectangle represents a separate map.  At that point you should
> be able to see which maps you want.  Change the bullet selection to "Mark
> Points".  Click anywhere inside a rectangle to create a red marker for that
> map.  Then click the red marker itself, which will pull up a list of maps
> to download.  Generally you will want to download the first map (top of the
> list).
>
> So far I have only downloaded 7.5 minute maps, but I may try some of the
> other larger maps and have Xastir use those at higher zoom levels.
>
> Lee - K5DAT
>
>
> On Mon, Dec 14, 2015 at 11:08 AM, Kurt <ksaves2 at sbcglobal.net> wrote:
>
> > Any tips on map selection would be appreciated too say like downloading
> > one's state of residence for example.  Clicked on the selection and there
> > are a lot of maps/types there.
> > It's like anything else, there's a learning curve.   Kurt KC9LDH :-)
> >
>
>
> >   From: Lee Bengston <lee.bengston at gmail.com>
> >  To: Xastir - APRS client software discussion <xastir at lists.xastir.org>
> >  Sent: Monday, December 14, 2015 9:29 AM
> >  Subject: Re: [Xastir] GeoPDF try
> >
> > LOL - I already said I would do that.  I'm not exactly sure how long it
> > will take.  In the meantime, anyone interested in these maps can download
> > them via the link below.  Might as well find and download the maps you
> > intend to convert for use with Xastir.
> >
> > http://nationalmap.gov/ustopo/index.html
> >
> > Select the "Download Maps/Map Store" link.
> >
> > Lee - K5DAT
> >
> >
> > On Sun, Dec 13, 2015 at 11:54 PM, David Ranch <xastir at trinnet.net>
> wrote:
> >
> > > That looks REALLY nice Lee!  For a Christmas present.. could you write
> up
> > > a doc of the steps to get that fully working?  Though the online OSM
> > work,
> > > they are pretty dark and blurry for my tastes.  These would be a major
> > > upgrade!
> > >
> > > --David
> > > KI6ZHD
> > >
> > >
> > >
> > > On 12/13/2015 08:38 PM, Lee Bengston wrote:
> > >
> > >> OK, got the conversions working.  Some screen shots are available via
> > the
> > >> links below:
> > >>
> > >> Screen shot 1 - the geotiff file for Leesburg, VA as displayed in the
> > >> ristretto image viewer in Xubuntu 15.04.
> > >> www.175moonlight.com/xastir/pics/GeoTIFF-ristretto-screenshot.png
> > >>
> > >> Screen shot 2 - the same geotiff file displayed in Xastir.  Still a
> > decent
> > >> offline map, but it doesn't display the text as clearly.
> > >> www.175moonlight.com/xastir/pics/GeoTIFF-xastir-screenshot.png
> > >>
> > >> I'll plan to provide detailed instructions for the following:
> > >>
> > >> - where to download the geoPDF maps
> > >> - what Xastir needs in order to support geoTiff maps
> > >> - how to install what is required to convert the USGS geoPDF files to
> > >> geoTiff files
> > >> - how to convert the files with the applicable perl script
> > >> - where to put the maps so Xastir can use them
> > >>
> > >>
> > >> Best,
> > >> Lee - K5DAT
> > >>
> > >>
> > >> On Sun, Dec 13, 2015 at 10:43 AM, Lee Bengston <
> lee.bengston at gmail.com>
> > >> wrote:
> > >>
> > >>
> > >>> On Sun, Dec 13, 2015 at 10:11 AM, Lee Bengston <
> lee.bengston at gmail.com
> > >
> > >>> wrote:
> > >>>
> > >>> On Sun, Dec 13, 2015 at 12:23 AM, Tom Russo <russo at bogodyn.org>
> wrote:
> > >>>>
> > >>>> ​<snip>​
> > >>>>>
> > >>>>
> > >>> Without the imagery, you don't need the high DPI that will be used by
> > >>>>> default,
> > >>>>> and so the thing processes much, much quicker (less than a minute,
> > vs.
> > >>>>> more
> > >>>>> than 40 minutes).  And instead of a 100+MB file, you get a 26MB
> file.
> > >>>>> The result looks very, very nice.
> > >>>>>
> > >>>>>
> > >>>>> ​
> > >>>> Thanks, Tom, for all the detailed feedback, which is not out of
> > >>>> character
> > >>>> :-)
> > >>>>
> > >>>> I thought building gdal from source might be required given I had to
> > do
> > >>>> that last time.​
> > >>>>
> > >>>> ​ Back then I had aspirations of documenting step by step what it
> took
> > >>>> to
> > >>>> convert and use those maps but never got to it.  At that time they
> > came
> > >>>> out
> > >>>> a little dark but were still very usable.  It sounds like the newer
> > >>>> geoPDF's may convert into nicer looking maps.  I'm off to try the
> FTP
> > >>>> site
> > >>>> from your other message so I can take a look.
> > >>>>
> > >>>> ​I took a look, and the map does look great.  The goal now is to get
> > >>> conversion working for me and plug them into Xastir.  I'll post a
> link
> > >>> to a
> > >>> screen shot of Xastir using them when
> > >>>
> > >>> ​I have it up and running.​
> > >>>
> > >>> ​
> > >>>
> > >>> ​BR,
> > >>> Lee - K5DAT​
> > >>>
> > >>>
> > >>> _______________________________________________
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> >
> >
> > >>
> > >
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