[Xastir] v 1.5.1 and hacked gpsd 2.23 - and a question

[Richard Polivka]

Well, if I can find an average offset of the main
roads by doing a grid drive (great way to see the
sites and relieve boredom), I may be able to come up
with a "fudge factor" that I may try to integrate into
Gerry's conversion software. 

Maybe my next project when I get gpsd working stable
for my application - hack on the software and
reprocess the shapefiles. I may have to get Gerry's
assistance on this task.

Thanks to all for the help.

Richard, N6NKO

--- "Curt, WE7U" <archer at eskimo.com> wrote:
> On Wed, 8 Jun 2005, Richard Polivka wrote:
> 
> > I am running Tiger 2004 shapefiles
> > and I appear to have a consistent offset of a few
> > hundreths of a degree. Is there a way of
> programming
> > in a fixed map offset to minimize the route
> errors,
> > both N/S and E/W?
> 
> Nope.  About the only answer we can give is that the
> Tiger data is
> not intended for this type of usage, but only for
> census data
> collection.  Of course their data is a free source
> of street maps so
> it is getting used in ways that were unintended by
> the census folks.
> 
> The offset varies in different areas.  They are
> working on making
> this situation better, but I'm not sure we'll see
> accurate maps from
> them within the next 5 or 10 years, if ever.  It's
> really not in
> their charter, and the people collecting the data
> are really not
> trained properly to do so.  I've seen Gerry talk
> about this before
> and I was amazed at just how unprepared these people
> were to be
> collecting geographic data.
> 
> --
> Curt, WE7U.   APRS Client Comparisons:
> http://www.eskimo.com/~archer
> "Lotto:    A tax on people who are bad at math." --
> unknown
> "Windows:  Microsoft's tax on computer illiterates."
> -- WE7U
> "The world DOES revolve around me:  I picked the
> coordinate system!"