Cumulative_Delta_Bars

function CumulativeDeltaBarsCalculator(data, options){
  var deltaOpen = 0
  data.forEach(function(d, idx){
    var delta = d.buyVolume - d.sellVolume
    delta = delta
    var deltaClose = parseFloat((deltaOpen+delta).toFixed(2))


    data[idx].cdbars = [deltaOpen, Math.max(deltaOpen, deltaClose), Math.min(deltaOpen, deltaClose), deltaClose];

    deltaOpen = deltaClose
  });

  return data;
}

plotStudy({
    type: "candlesticks",
    name: "Cumulative Delta Bars",
    fill: function(d){ return  d.close<d.open ? "#00ff00" : "#ff0000"},
    stroke: function(d){ return  d.close<d.open ? "#00ff00" : "#ff0000"},
    valueColor:"#ffffff",
    calculator: CumulativeDeltaBarsCalculator,
    options:{
        yAccessor: function(d){return { open: d.cdbars[0], high: d.cdbars[1], low: d.cdbars[2], close: d.cdbars[3] }},
    },
    chartId: "cdbars"

})