[NTLUG:Discuss] GPS Mapping Software

[Walter Johnston]

The 2004 TIGER files (2nd edition) were released on 18 Aug 2005.
 Look for them through

http://www.census.gov/geo/www/tiger.html

BTW: The RT1 files will give you all the segments, but the RT6
files provide addresses that are "unusual" - I suggest a good
old RTFM even though the documentation is a bit tedious :-)

Walter Johnston





---- On Mon, 19 Sep 2005, Steve Baker (sjbaker1 at airmail.net)
wrote:

> Kyle Davenport wrote:
> > *** Authentication Certificate ***
> > 
> > Rick Cook wrote:
> > 
> >>I am looking for a way to take the mapping information on
the
> >>laptop and use it to create a detailed map
> > 
> > 
> > wow, I've been looking for this too.  I assumed at this late
stage of the
> > game there would be numerous free sources of maps and
waypoints.  Instead I
> > find all the "rich" detail buried in proprietary and
expensive formats that
> > the open-source community hasn't cracked yet.  Geez, it
reminds me of
> > office software in 1995 [shudder].
> 
> There is one source of clean, free, public mapping information
that was
> gathered by the US goverment for census-taking purposes in
2000.  It hasn't
> been updated since - but one presumes it will be since it's
required for
> census-taking.
> 
> It's called 'TIGER':
> 
>    http://www.census.gov/geo/www/tiger/tgrcd108/tgr108cd.html
>    http://arcdata.esri.com/data/tiger2000/tiger_download.cfm
> 
> It's fully documented and as far as I can tell, it's fairly
complete
> for things that were there in 2000.
> 
> I've written crude programs to extract the road data for some
small area
> and display them as vector data on a Linux PC.  You are
welcome to copies
> of those if you think they'll help...but they aren't in a
state where I'd
> say they were useful for much as-is.
> 
> There is a lot of other data there too.
> 
> However, it's not clear how you'd get it from the TIGER format
into
> whatever format your GPS uses.
> 
> ---------------------------- Steve Baker
-------------------------
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