[OSM-dev] Newby question
Dave Stubbs
osm.list at randomjunk.co.uk
Mon May 12 15:51:48 BST 2008
On Mon, May 12, 2008 at 3:22 PM, Shaun McDonald
<shaun at shaunmcdonald.me.uk> wrote:
>
>
> On 12 May 2008, at 15:13, Alex Wilson wrote:
>
> > Hi,
> >
> > I'm new to this mailing list but have been following the good work
> > at OSM for a while and have been very heartened by the project's
> > growth. I have a simple question: I'm interested in the relative
> > runtime of the sub-components of the Osmarender-based tile
> > generation process. Specifically the relative time for running the
> > Osmarender code itself (the XSLT+Perl) versus rendering the
> > resultant svg as a tile? I am presuming the former is a small
> > proportion of the total runtime whilst the svg rendering dominates?
> >
> > If not, I was wondering if there's any interest in developing a
> > version of the code in a compiled language for efficiency reasons?
>
> Take a look at mapnik. I think that it does what your looking for. The
> problems that I know of with Mapnik are that it can take a bit to
> setup, and you can't do incremental updates of the database that it
> works off (hence why there are only weekly updates to the map).
>
Although if you're only interested in small sections of data
retrievable with an api map call then there is no reason you couldn't
download the data T at H style, and import to postgis/shape and render
using mapnik. This would all happen very quickly -- probably faster
than the T at H equivalent (I haven't tested, so I couldn't guarantee
that).
Dave
More information about the dev
mailing list