[OSM-talk] [OSM-dev] Software development - most pressing issues

[Robert (Jamie) Munro]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Richard Fairhurst wrote:
> Guess we should probably agree to have this conversation on dev rather  
> than three lists at once, but until then:
> 
> Martijn van Exel wrote:
> 
>> But these are just some issues that arise in the specific Dutch
>> context. I really would like to see a kind of 'top 3' of concrete
>> software-related issues to include in the funding proposal.
> 
> For me, it's pretty easy:
> 
> 1. Near-instant updating of Mapnik layer to show user's changes

This should be fairly simple:

1. Figure out how to efficiently apply osmosis changesets to the postgis
database (probably based on keeping a copy of the OSM database using
osm2pgsql's database intermediate storage thing, then maybe using
triggers to pass changes to the postgis geometry tables)
2. Figure out which tiles have been changed in the osmosis changeset and
expunge them from the cache.
3. Repeat hourly

Someone the other day (half jokingly) suggested porting the mapnik
infrastructure to the PS3, where it will have a cell processor and lots
of graphics specific hardware to play with. This should make it possible
to increase performance hugely. This may allow on-line generation of
maps with no caching (except maybe at low zoom levels), which would make
it possible to have maps customised for each user, for example, in
different languages, with different style etc.

Robert (Jamie) Munro
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (Darwin)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFHTuSdz+aYVHdncI0RAtNEAJ9K0Mal+ipkaJmOtNQAIeSlgIK58QCg7O7f
ZFW1xQYCcGjEjCLzTSm+wrk=
=Oyuv
-----END PGP SIGNATURE-----