R: Cohort Heatmap of Neo4j London Meetup

See the original posting on DZone Python

A few months ago I had a go at doing some cohort analysis of the Neo4j London meetup group which was an interesting experiment but unfortunately resulted in a chart that was completely illegible.

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A few months ago I had a go at doing some cohort analysis of the Neo4j London meetup group which was an interesting experiment but…