[OSM-talk] SRTM contours on Mapnik map

[Nick Whitelegg]

On Friday 19 Jan 2007 21:29, SteveC wrote:
> * @ 19/01/07 08:50:54 PM Andy_J_Robinson at blueyonder.co.uk wrote:
> > Joerg Ostertag (OSM Munich/Germany) wrote:
> > >Sent: 19 January 2007 8:11 PM
> > >To: talk at openstreetmap.org
> > >Subject: Re: [OSM-talk] SRTM contours on Mapnik map
> > >
> > >On Friday 19 January 2007 20:54, matthew-osm at newtoncomputing.co.uk wrote:
> > >> On Fri, Jan 19, 2007 at 07:42:09PM +0000, Nick Whitelegg wrote:
> > >> > Have just now managed to render a Mapnik map containing SRTM
> > >> > contours.
> > >>
> > >> ...
> > >>
> > >> > http://nick.dev.openstreetmap.org/mapnik2/100485125.png
> > >> >
> > >> > Comments on colour scheme of contours welcome - am trying to get
> > >> > something like the OS landranger mapss.
> > >>
> > >> Wow, looks great!
> > >>
> > >> I guess the plan is to keep the contours separate until rendering
> > >> time, rather than to upload them into the database? (That would seem
> > >> to be
> > >
> > >rather
> > >
> > >> a waste of db space.)
> > >
> > >Well i think yes and no. Once you have the countours in the database you
> > >can
> > >correct them and make them more precise. And every editor will display
> > > them without any additional effort. So I would upload them ...
> >
> > I'd agree with you regarding being able to adjust them but if they are in
> > the db and shown in JOSM and the applet by default it's going to confuse
> > the hell out of anyone just starting up.
>
> or any existing users... this and the flight paths make a strong case
> for a sister project - perhaps doing some mass altitude analysis of the
> gps data we've built up.

Would this be more accurate than SRTM though? IMX the altitude readings on GPS 
devices are less accurate than SRTM.

Nick