[Openstreetmap] How do we handle large amount of GPS points?
Matt Amos
matt at matt-amos.uklinux.net
Sun Dec 5 19:24:29 GMT 2004
On Saturday 04 December 2004 21:45, Petter Reinholdtsen wrote:
> Next step is to write the GPX import tool to store the points into
> your database. Unless someone is already working on this, I will
> have a look later. But I suspect the import should be done
> locally, as the amount of data is huge, and it will take forever to
> insert 7 million GPS points using XML-RPC over the Internet.
i agree it should be done locally to the server, as the GPX file will
be a more compact storage form than XML-RPC. also, the web uploader
could quite easily read .gpx.gz/bz2 files.
my thinking was that people would upload to a web site, which would
validate the file against the schema for gpx, do a number of basic
checks on the usability (i.e: lack of noise and fubar'ed points) of
the file and then import it to the database.
but i havent started working on this yet (still getting gpx files out
of my SiRF program ;-)), so please have a look later!
> (I tried to import the files into qgis, but ran out of memory. :(
> ))
it seems to me that qgis is very memory hungry, even on quite small
files.
cya,
matt
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