[OSM-dev] Lite OSM backend
ranaldo at unina.it
Thu Sep 7 09:01:18 BST 2006
> Oliver has probably thought of this, but there are substantial further
> savings using offsets.
To have a plug&play binary file we need indexes on lat/lon to fast filter
bounding boxes. We could release two packages, data only or data + indexes.
Users could choose and run the full package or the partial (generating
About flags, i think 32 bits are not sufficient. We should think about a
system to extend tags. For example if the 32th is set to 1 then software may
lookup a special file to find the other tags.
To avoid a large use of this overload area, generating tools should sort tags
by usage, assign the 31 most used to bits and generate a configuration file
to get mapping.
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