[OSM-dev] Cutting up an image into tiles

Artem Pavlenko artem at pavlenko.uklinux.net
Wed Feb 28 13:54:12 GMT 2007


On Wednesday 28 February 2007 13:38, Ludwig M Brinckmann wrote:
> If you want to digitize the image it might be better to leave it in
> whatever projection it is in as the warping process will inevitably degrade
> the image.

This is very true! Trace over NatGrid then project to Mercator or Lat/Long.

Cheers,
Artem

> On 2/28/07, Artem Pavlenko <artem at pavlenko.uklinux.net> wrote:
> > On Wednesday 28 February 2007 13:16, Nick Black wrote:
> > > On 2/28/07, Artem Pavlenko <artem at pavlenko.uklinux.net> wrote:
> > > > Nick,
> > > > Or even better use Mapnik!
> > >
> > > Do you mean use the Mapnik WMS server?  I've never got round to
> > > looking at that.  Kristian is sticking it on his WMS as we speak.
> >
> > I wasn't sure you need WMS. Can you just use gdal to warp this TIFF in
> > one go?
> > Cheers,
> > Artem
> >
> > > > Let me know I'll send you a script.
> > > >
> > > > Cheers,
> > > > Artem
> > > >
> > > > On Wednesday 28 February 2007 11:46, Kristian Thy wrote:
> > > > > On Wed, Feb 28, Nick Black wrote:
> > > > > > I have a TIFF image map of the Isle of Man at approximately
> >
> > 1:25,000
> >
> > > > > > scale.   The IoM Gov have given dervative rights to OSM to use it
> >
> > to
> >
> > > > > > produce data from.  I need to cut the image up into smaller
> > > > > > tiles, which I was then planning on rectifying using the
> > > > > > metacarta rectifier, then using the JOSM WMS plugin the trace the
> > > > > > roads.
> > > > > >
> > > > > > So can anyone point me in the direction of some guidelines about
> > > > > > scripting ImageMagick / Rmagick , or something the cut the image
> >
> > up -
> >
> > > > > > which shouldnt be too hard to do?   I dont have access to the
> > > > > > TIFF right at the moment, but its big.  Over 80mb I think.
> > > > >
> > > > > Cut, tiles, what? If it's georeferenced, put it in MapServer and
> > > > > publish it as a WMS. I can supply the MapServer if needed.
> > > > >
> > > > > \\kristian
> > > >
> > > > _______________________________________________
> > > > dev mailing list
> > > > dev at openstreetmap.org
> > > > http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
> >
> > _______________________________________________
> > dev mailing list
> > dev at openstreetmap.org
> > http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev




More information about the dev mailing list