https://github.com/tmcw/sometimemachine
openstreetmap history analysis
https://github.com/tmcw/sometimemachine
Last synced: 4 months ago
JSON representation
openstreetmap history analysis
- Host: GitHub
- URL: https://github.com/tmcw/sometimemachine
- Owner: tmcw
- License: bsd-2-clause
- Created: 2012-09-17T22:07:40.000Z (almost 14 years ago)
- Default Branch: master
- Last Pushed: 2016-12-16T02:56:35.000Z (over 9 years ago)
- Last Synced: 2025-10-20T14:57:16.014Z (9 months ago)
- Language: HTML
- Homepage:
- Size: 937 KB
- Stars: 23
- Watchers: 4
- Forks: 9
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: changesets_2012.png
- License: LICENSE
Awesome Lists containing this project
README
# sometimemachine
Analysis of OpenStreetMap History.
[Latest weekly changesets](http://planet.openstreetmap.org/) on
`planet.openstreetmap.org` includes all changesets for the recorded
history of OpenStreetMap as a 4.2G XML file.
Changesets have:
* uid
* id
* bbox
* num_changes
* date_opened
* date_closed
This code is inspired by [ChangesetMD](https://github.com/ToeBee/ChangesetMD),
with a few differences:
* SQLite instead of Postgres
* expat instead of sax.handler
* more compact schema for smaller databases
* BSD instead of GPL
Initialize an SQLite file:
cat schema.sql | sqlite3 changesets.sqlite
Import a changeset dump into sqlite:
python stm.py changesets-latest.osm[.bz2] changesets.sqlite
Indexes
create index uid_idx on osm_changeset (user_id);
## Products
Videos: [OSM Edits](http://vimeo.com/53991791), [centers of OSM edits](http://vimeo.com/53021947).
`unique_per_day.js`
* [Active Contributors Per Month](http://bl.ocks.org/3750490)
* [Active Contributors Per Day](http://bl.ocks.org/3750519)
`two_edit_per_month.js`
* [Contributors by Level By Month](http://bl.ocks.org/3751212)
* [up to 10 edits](http://bl.ocks.org/3751255)
## Graphs
These guys you can generate with scripts but are too heavy to put on gist.
When users register versus how likely they are to contribute for more than
a year. Nearly all of the early users of OpenStreetMap contributed more
than a year, while users who started contributing 2 years ago are much
less likely.
Changesets in the last 3 months (dark red), last year (orange), all time
(light orange)
User lives histogram. Of course, the vast majority of users last less than
two days. It's an exponential distribution from there on with no clear peaks.
