[OSM-dev] planet_osm2txt with planet-060818?

Joerg Ostertag (OSM Munich/Germany) openstreetmap at ostertag.name
Mon Aug 21 21:00:47 BST 2006


On Monday 21 August 2006 21:40, Joerg Ostertag (OSM Munich/Germany) wrote:
> On Monday 21 August 2006 17:47, Nick Whitelegg wrote:
> > > There is I think a strong need for a utility to only put a given tile
> > > of planet.osm into a database, that way people can easily set up
> > > localised planet-based databases. The trouble is a) the checks slow it
> > > down significantly, (e.g. using REXML and the July planet.osm took a
> > > day to put the UK OSM data into Freemap) and b) reading in all the
> > > nodes into memory (necessary for filtering out segments) takes up a lot
> > > of memory - by my estimation 320MB, requiring a 512MB box, so doable on
> > > the average newish desktop PC but not, say, a 128MB virtual machine :-|
> >
> > Sorry - don't think the memory requirements would actually be that high,
> > as only those nodes from the bounding box really need to be read in, then
> > their *existence* could be checked when it comes to segment filtering.
> >
> > As Steve says libxml is probably the way to go here, if I get a spare few
> > hours the next week or so I'll give it a go, based on Dee's VB solution
> > and others.
>
> I just checked the new area filter support in planet_osm2txt.pl into svn.
> The memory footage now is 150MB for europe. Does that sound better than
> before ;-)

Ups that was UK and germany. But nevertheless it now seems to be a working 
version again.

> Comments welcome.
>
> -
> Joerg
>
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-- 
Jörg (Germany, Munich)

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