[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 Hughes (tom at compton.nu)

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