[OSM-dev] planet diff and excerpts
lists at julius-net.net
Thu Oct 11 18:50:08 BST 2007
Frederik Ramm <frederik at remote.org> writes:
> Say I have a planet extract containing Germany, and I want to keep
> that up to date using the planet diffs.
> Then I'll just apply the normal (full planet) diffs to my extract and
> run a new polygon extraction on the result which will give me the
> updated excerpt, right?
> And afterwards I could diff my old data and my new data and thus
> create a diff that is limited to the excerpted area.
> I don't suppose it would be possible to make something like a polygon
> excerpt from a diff, because the diff doesn't necessarily contain the
> location where a change occurred (if the change is e.g. in a way).
I think you will have the same problem with your extract. All new ways
referencing existing nodes will end up in it without the nodes. I
guess you will need to plug a filter in between to get rid of
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