Not just text with visualizations, but...

• Can it be modified and reproduced?
• Is the source code available?
• Are the data sources referenced?

Data driven article is really a program!

There is no magic. It is just code and text!

• We see the journalist's story first
• Readers can modify the parameters
• Power users can see and modify the code

Typed functional language with type providers

• Simple code with functional programming
• Editor support via static types
• Data access with F# type providers

One of members of the same type

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2: 
3: 

let co2 =
  world.byYear.``2010``.``Climate Change``
    .``CO2 emissions (kt)``

List with sub-set of properties

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2: 
3: 
4: 

let topCountries =
  [ world.byCountry.China
    world.byCountry.India
    world.byCountry.Japan ]    

Programming experiences research

• Usable literate programming
• Use PL for provenance, context and more!
• Mapping for large-scale open government data
• Grammar of interactive visualizations