2009/9/8 Grant Slater <openstreet...@firefishy.com> > What is next? What are we going to need next?
Last night I dreamed about a solution to the cc-by-sa attribution problem. It would be soo nice to have appropriate attribution displayed in OpenLayer while browsing the map. There it goes.. A server calculates user contribution for sets of 3x3 tiles (supertiles) for each zoom level 12-18. The calculation is done once a week (maybe done by t...@h clients). Users adding ways/pois get a score of 3 per way/poi added, users adding more tags to existing way/pois get a score-point of 1 for each edit. Import sources get a 0.1 score-point per way/poi. Score-points get calculated per supertile, top 4 contributors for each supertile including their score-points get stored in a database, the attribution-db. Keys and indexes on zoom level and new supertile index (maybe central tile x/y). OpenLayer gets extended in a way that while requesting tiles an additional request to the attribution-db is issued, contributors for the corresponding supertile get loaded and nicely presented in the lower right corner of the view. OSM runs the attribution-db and spreads the extended OpenLayer lib. * Information which user created a way is only available in history, so initial calculation is heavy-load, but must only be done once. * attribution information for mutliple supertiles could be aggregated into attribution-pages which are stored in the attribution-db. this attribution-pages are sent to the client, which sorts out the appropriate attribution with some .js magic for the current displayed view. This could save the attribution-db from load. * attribution score-point changes could be calculated on-the-fly, once an initial load of the attribution-db is done. :D Need more sleep, now. Regards Micha
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