[OSM-dev] [OSM-talk] New Export Tab

Tom Hughes tom at compton.nu
Tue Apr 22 00:09:01 BST 2008


In message <513489.85647.qm at web30804.mail.mud.yahoo.com>
          Mikel Maron <mikel_maron at yahoo.com> wrote:

> From: Tom Hughes <tom at compton.nu>
> 
> > > I'd like to see GPS export. Anyone want to work together on a mkgmap
> > > service? Or does one exist already?
> > 
> > I don't understand what you mean? What is GPS export?
> 
> I want to put a map on my Garmin GPS.
> 
> http://wiki.openstreetmap.org/index.php/Mkgmap

Hmm... Well if it has to start by getting API data then it's not going
to be that fast - export XML data from the API is already about the slowest
option on the export tab even before we start adding any extra conversion
on top of that.

> > Thinking about it more, if you allow requests that are so slow they
> > have to be queued then you things get vastly more complicated because
> > you have to start worrying about how to manage the queue and ensure
> > you don't accept more requests than you can actually process.
> 
> This wouldn't need to be something OSM export itself would need to worry
> about, but the third party service.

Well you could just have it submit jobs to an external queuing system
but it would need quite a bit of work to integrate neatly, and I'm not
sure I would to tie an external service like that tightly into the
official main site.

> However if export to Garmin could run on the OSM servers, that would be
> easiest. Afaik, it's not terribly computationally intensive.

Presumably you usually want quite a large area though? Which is going
to make even getting the source data an issue due to the limit on how
large an area you can fetch.

Tom

-- 
Tom Hughes (tom at compton.nu)
http://www.compton.nu/




More information about the dev mailing list