[OSM-dev] [Geowanking] shortestpathtree.org - a tool for quickly checking OSM data integrity
Peter.Rushforth at NRCan-RNCan.gc.ca
Mon Mar 12 18:24:56 GMT 2012
Very very cool.
Especially the tiled vectors!
> -----Original Message-----
> From: geowanking-bounces at geowanking.org
> [mailto:geowanking-bounces at geowanking.org] On Behalf Of
> Brandon Martin-Anderson
> Sent: March 12, 2012 12:12
> To: osm-dev; geowanking at geowanking.org
> Subject: [Geowanking] shortestpathtree.org - a tool for
> quickly checking OSM data integrity
> Behold! I made a thing.
> It creates shortest path trees, which are pretty, and have a
> variety of uses. My favorite use is quickly and
> phenomenologically checking OSM referential integrity across
> entire cities. Also, potentially, it can tell you how to get
> places. Tell me how you like it.
> Colophon, for the interested:
> Server and client-side code is at
> https://github.com/bmander/vtp. I took Migurski's city
> extracts in PBF format and popped them into a Mongodb
> instance using a homebrew script in node.js. Then I applied a
> series of map-reduce runs to slice the ways at shared
> intersections, and to collect them into tiles. This is slow,
> but there's some home of parallelization. A simple node.js
> script serves the vector tiles to the client, where all
> routing is done; printed to a homebrew canvas-based client.
> The disadvantage is that routing is slow for you.
> The advantage is the server doesn't have to do anything
> except hand out tiles, which, ideally, should be pretty small.
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