Summer Hacks :)

CopenhagenJS   August 2013

Skolevej   •   BibGraph

CoffeeScript • D3.js • Leaflet • LevelDB

Rasmus Erik .com

Skolevej

Hammertime

• Map route editor
• Start frontend freelancing
• Leaflet + Leaflet.draw
• CoffeeScript

Skolevej

Hammertime

DEMO

BibGraph

Dansk BiblioteksCenter

• Got data: millions of library coloans
• Calculate "relevance" between books
• Visualise using D3.js, DOM and Canvas
• Backend with node.js + LevelDB

BibGraph

Dansk BiblioteksCenter

DEMO

BibGraph details

Dansk BiblioteksCenter

Link weigth P(A|B)P(B|A)

Pseudo-random (deterministic) graph traversal with noise and pre-branching

Out-of-memory data processing and sorting

Mobile DOM-change missing touchend

Questions

• BibGraph heuristics/algorithm details?
• LevelDB - what/why?
• CoffeeScript - good and bad
• Co-hacking?
• ...