//A simple bar chart structure 4

let chart = d3_rs_bars.html()
                      .labelTime('%a'); //format the epoch time using string specifiers

//datum using epoch time dataset 
let data = [{"l":1466511212000,"v":[5,4,2]},{"l":1466856812000,"v":[2,2,4]},{"l":1466684012000,"v":[3,1,2]}]

d3.select('body')
  .datum(data) 
  .call(chart);