[OSM-dev] Augmented Diffs

[andrzej zaborowski]

Hi,

On 7 September 2012 08:26, Komяpa <me at komzpa.net> wrote:
> Augmented diffs is one of the most awaited features for me, thanks for
> implementing :3
>
> It makes possible to eliminate the need for slim tables in osm2pgsql
> database.

It doesn't seem that this was specifically the purpose of Roland's
augmented diffs, but this a very good idea too.  Implemented naively
as someone mentioned such diffs could be huge, so I'm thinking that
rather than include the WKT of the new geometry with every element,
perhaps you need some form of geometry diff description.  When a node
is added or moved in a way, it makes sense to only include the part of
the WKT that has changed, both for the way element, and any relations
containing that way.

Cheers