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our contribution to the music hack day amsterdam 2009
JavaScript Ruby
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app adapting to API V4 and rails 2.3.14
config fixing
db adding index for performance increase
doc we can haz streamgraphing
lib/tasks cron task
public showing articles
script we can haz streamgraphing
test showing articles
.gitignore showing articles
Gemfile trying to fix this
Gemfile.lock trying to fix this
README.textile fixing readme, dummy commit
Rakefile we can haz streamgraphing


This is our (Jan Krutisch and Wolfgang Wopperer of mindmatters) contribution to the music hack day amsterdam 2009.

It visualizes

The visualisation follows the Streamgraph pattern as described by Lee Byron and Martin Wattenberg
If you are interested, this currently uses the “wiggle” correction, as we have some problems with the “weighted wiggle” algo if the dataset is as sparse as ours.
The graph is rendered using a self written g.raphael plugin which is not quite finished yet.

Get it to work

You’ll need an echonest api key and either set an environment variable ECHONEST_API_KEY or create config/api_keys.yml which contains an echonest: entry.

Calling rake cron once a day is a good idea to populate the database.

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