[ gpsdrive ] External program interfacing with gpsdrive

Tue Aug 19 10:19:28 AKDT 2008

On Montag 18 August 2008, stan wrote:
> So what on earth is LatLong-UTM conversion.cpp doing in the svn source? Is
> it there to scare away anyone who wanders in by accident? :) I did a lot of
> digging and couldn't find anything else in there that looks for it but it's
> there so someone must have seen the state of the grid mapping thing and
> decided to throw data that and say a few prayers.

I think we can remove it from the stree, since I didn't find any references 
either.

> Anyway, I'm have been following the docs for pgrouting to the letter to at
> least give it a chance. The database will be a pain, Ireland took around 5
> times longer to set up than with osm2psql 

This is not too much of a problem in the long run. We can think of providing 
sql dumps from the imported Data. This way the import should go flawlessly 
and fast on most machines suitable for gpsdrive with pgroute routing.

> but its spitting out results and 
> if fairly easy to request routes from, how good they are is yet to be seen.
> I'm filtering the output with perl to spit out gpsdrive track files, when
> thats done it can get some real testing. Some earlier hand copied attempts
> didn't look to good but there was a 'high margin of error' there, possibly
> PBKAC ;) @Guenther Meyer, I was guessing there where plans on the cards
> after looking at the source :) 

Cards?

> I'll keep away from that then but may quiz 
> up a friend who has a lot of experience in search engines in case he has
> anything interesting to add.
> I'll keep you posted on how gprouting turns out, it would be great if it
> works as it's just a few more sql statements and a return plot. 

Sounds easy to use ...

> I'll keep 
> my attention on that and try and figure out a point and click way to go
> from an osm file to a configured database. The folks at pgrouting seem very
> helpful and quick to respond 

This is really really helpfull :-)

> so a combined mapnik and pgrouting db 
> shouldn't be too hard to get support for (pgrouting are using a different
> co-ordinate system). Nearly forgot:
> http://pgrouting.postlbs.org/svn/pgrouting/tools/osm2pgrouting/trunk

Did you already ask if there a chance to use a different coordinate system 
with pgroute? I cannot think of too many differences in terms of routing 
depending on the coordinate system. But maybe I'm wrong there.

> Does what it says on the tin :) Has a few small bugs (doesn't like '
> characters in names and needs 'id' changing to 'gid' on the last line of
> Export2DB.cpp) but it gets the data in there, try a small city map first
> though, you would need a calender to time the planet map :) A mix of this
> and osm2pgsql with the option of pretty buttons would make everyone happy.
> cheers
>
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-- 

Jörg

http://www.ostertag.name/
http://www.openbc.com/go/invita/Joerg_Ostertag