[OSM-dev] Student Project Ideas?

[Peter Körner]

> What you need is to generate a "dirty-tiles" list for every edit-session 
> in the database and only display the edit-sessions whose "dirty-tiles" 
> list includes tiles that you're looking at with slippy-map at that time. 

Such a dirty-tiles list could be used in tile-expiring on the render 
servers as well. The current solutions to this have the same problem as 
the history tab: a change to the german border triggers the whole german 
country to be marked as dirty, because they're inside of the relations.

Such an algorithem would be very useful on all rendering stacks -- and 
it's also a not so easy task (because of various reasons that don't need 
to be mentioned here ;)

Peter