[OSM-dev] Planet dump updates to include relations as an extra file
frederik at remote.org
Sun Apr 13 21:05:01 BST 2008
> | Given that #relations < #ways < #nodes, and you (generally) need to
> | know about all the relations before you process the ways, and you need
> | to know which ways you are interested in before deciding which nodes
> | to keep - would it not make sense to dump the relations into the file
> | first, followed by the ways, then the nodes last?
> The obvious solution to me would be to abandon the monolithic planet
> file altogether or at least provide separate files for nodes and
Do we really need that? My take on this would be:
1. anyone who has not enough hard disk space for a decompressed planet
shouldn't be working with it anyway;
2. once you have a decompressed planet, it is a matter of a few seeks
and reads to find the byte offset in the file where ways and
relations begin (binary search in text file).
Frederik Ramm ## eMail frederik at remote.org ## N49°00'09" E008°23'33"
More information about the dev