dxScript JS API

1.js

input.n = 9
const n = input.n

let logPrice = ResultSeries.apply("logPrice", () => { return Math.log(close.last()) })
let logPrevPrice = ResultSeries.apply("logPrevPrice", () => { return Math.log(close.last(1)) })

let triple = trix(logPrice, n);
let triplePrev = trix1(logPrevPrice, n)

output.TRIX = (triple - triplePrev) * 10000


function trix(x, n) {
    let ema1 = ResultSeries.apply("compute", () => {
        return Ema1.init("ema1").compute(x, n);
    });
    let ema2 = ResultSeries.apply("compute2", () => {
        return Ema1.init("ema2").compute(ema1, n);
    })
    return Ema1.init("ema3").compute(ema2, n);
}

function trix1(x, n) {
    let ema1 = ResultSeries.apply("compute_", () => {
        return Ema1.init("ema1_").compute(x, n);
    });
    let ema2 = ResultSeries.apply("compute2_", () => {
        return Ema1.init("ema2_").compute(ema1, n);
    })
    return Ema1.init("ema3_").compute(ema2, n);
}

2.js

const useInput = (name, def, desc) => input[name] === undefined ? def : input[name]
let seriesCounter = 0
const useSeries = (value) => {
    const series = ResultSeries.apply(seriesCounter.toString(), () => value)
    seriesCounter++;
    return series
}
const useOutput = (name, value) => output[name] = value
const ema = (series, n) => {
    const value = Ema1.init(seriesCounter.toString()).compute(series, n)
    seriesCounter++;
    return value
}

// script code
const n = useInput("n", 9, "Depth")

const logPrice = useSeries(Math.log(close.last()));
const logPrevPrice = useSeries(Math.log(close.last(1)));

const triple = trix(logPrice, n);
const triplePrev = trix(logPrevPrice, n)

useOutput("TRIX", (triple - triplePrev) * 10000)

function trix(x, n) {
    const ema1 = useSeries(ema(x, n));
    const ema2 = useSeries(ema(ema1, n));
    return ema(ema2, n)
}

original.dxsp

in n = 9

def logPrice = close.ln()
def logPricePrev = close[1].ln()

def triple = trix(logPrice, n)
def triplePrev = trix(logPricePrev, n)

out TRIX = (triple - triplePrev) * 10000

fun trix {
  in x: number
  in n: const number
  def ema1 = x.ema(n)    // 9
  def ema2 = ema1.ema(n) // 18
  out = ema2.ema(n)      // 27
}

original.js

input.n = 9
const n = input.n

let logPrice = ResultSeries.apply("logPrice", () => { return Math.log(close.last()) })
let logPrevPrice = ResultSeries.apply("logPrevPrice", () => { return Math.log(close.last(1)) })

let triple = trix(logPrice, n);
let triplePrev = trix1(logPrevPrice, n)

output.TRIX = (triple - triplePrev) * 10000


function trix(x, n) {
    let ema1 = ResultSeries.apply("compute", () => {
        return Ema1.init("ema1").compute(x, n);
    });
    let ema2 = ResultSeries.apply("compute2", () => {
        return Ema1.init("ema2").compute(ema1, n);
    })
    return Ema1.init("ema3").compute(ema2, n);
}

function trix1(x, n) {
    let ema1 = ResultSeries.apply("compute_", () => {
        return Ema1.init("ema1_").compute(x, n);
    });
    let ema2 = ResultSeries.apply("compute2_", () => {
        return Ema1.init("ema2_").compute(ema1, n);
    })
    return Ema1.init("ema3_").compute(ema2, n);
}