[aprssig] KS9N's USA Map for APRSdroid

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Wed Aug 21 22:31:58 CDT 2013


It's a MapsForge formatted map and includes ALL of the POI data from the 
OpenStreetMaps project, not only roads, but details including railways, 
power lines, bridge types, and in some areas even signal lights, bike 
paths, culverts, building outlines, and in extreme areas even individual 
tree placements.  The current OSM planet definition is 29GB as XML and 
bz2 compression or 21GB as a binary PBF file.  It's not inefficient, 
it's detailed.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 8/21/2013 11:19 PM, Stephen H. Smith wrote:
> On 8/21/2013 8:55 PM, Andrew P. wrote:
>> Well. That kind of explains how he gets the whole USA in half the 
>> storage YAAC needed a year ago when I was burning demo DVD's for the 
>> 2012 DCC. :-)
>>
>
> Sounds as through this file must be using rather inefficient 
> coding/compression, if it's only getting part of the US into 2.3 GB.
>
>
>
> I just installed the 2013 MapPoint North America which somehow gets 
> complete street-level detail for ALL of Canada, the US and Mexico into 
> 1.2 GB of data.
>
> Precision Mapping 9.0 gets all of Canada and the US at street level 
> (but not Mexico, along with 5 million points of Interest into about 3 GB.
>
> Garmin City Navigator North America (the database in Nuvi car 
> navigators) gets street level for all of the US & Canada plus 
> major-roads-only in Mexico plus POIs into 2.4 GB.
>
>
> ________________________________________
>
>
> -- 
>
> Stephen H. Smith    wa8lmf (at) aol.com
> Skype:        WA8LMF
> EchoLink:   14400  [Think bottom of the 2-meter band]
> Home Page:          http://wa8lmf.net
>
>
>  Long-Range APRS on 30 Meters HF
>     http://wa8lmf.net/aprs/HF_APRS_Notes.htm
>
> High Performance Sound Systems for Soundcard Apps
>    http://wa8lmf.net/ham/imic.htm
>    http://wa8lmf.net/ham/uca202.htm
>
> "APRS 101"  Explanation of APRS Path Selection & Digipeating
>   http://wa8lmf.net/DigiPaths
>
>
>
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