[OSM-talk] Geofabrik Download Server Update
Frederik Ramm
frederik at remote.org
Tue May 3 19:45:09 BST 2011
Matthias,
Matthias Julius wrote:
> But, I need to point out again that theese extracts are not quite as
> useful as they could be, IMHO. Unless something has been changed,
> ways that cross the bounding polygon are trunkated at the last node
> inside the polygon.
I have started to slowly introduce extracts built with the
--complete-ways option, but not all extracts have that yet. In Europe,
all sub-country extracts have it but countries don't, so you should be
able to join two German Laender or two French regions, but you will
encounter problems when joining a part of Germany with a part of France.
I'm working on that but even a box with 90 GB of RAM disk has a hard
time splitting Europe into countries with --complete-ways.
Note that two other preconditions exist for a successful join of
neighbouring regions. First, the polygons I use for cutting must
actually overlap. They usually do but every now and then I encounter a
little bit of no man's land due to polygon simplification. Second, you
have to use software that properly eliminates the double elements; I'm
not sure if Osmosis does that.
Bye
Frederik
--
Frederik Ramm ## eMail frederik at remote.org ## N49°00'09" E008°23'33"
More information about the talk
mailing list