Likhtar - Indicator

Use custom adapter to retirieve OHLC data

Demo

Code

      let Vue = Likhtar.vue;
      Vue.config.productionTip = false;
      Vue.component(Likhtar.app.name, Likhtar.app);

      let adapter = function() {
        return {
          getData: function (venue,symbol,_from,_to,granularity) {
            let interval = null;
            switch (granularity) {
              case "1m": interval = Likhtar.d3.timeMinute; break;
              case "5m": interval = Likhtar.d3.timeMinute.every(5); break;
              case "15m": interval = Likhtar.d3.timeMinute.every(15); break;
              case "1h": interval = Likhtar.d3.timeHour; break;
              case "1d": interval = Likhtar.d3.timeDay; break;
              default: interval = Likhtar.d3.timeMinute; break;
            }
            let generator = Likhtar.fc
            .randomFinancial()
            .startPrice(8000)
            .interval(interval);
            return { data: generator(40), id: [venue, symbol].join("-") }
          }
        }
      }

      let myIndicatorFunction = function(datum){
        // This increments closing price by a fixed amaount

        let data = datum[0].data;
        let factor = 5;
        data.map(a => {
          a.value = a.close + factor // Default cross value for indicator is `value`
          return a;
        });
        return {data: data};
      }

      let chartApp = new Vue({
        el: '#app',
        data: {
          symbols: "MyExchange:BTCUSD",
          granularity: "1m",
          adapter: adapter(),
          indicators: [
            { id: "delta",
              indicatorFunction: myIndicatorFunction,
              type: "line" },
          ]
        }
      });