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Post From: wave trend oscillator

[2022-07-13 20:20:00]
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User411320 - Posts: 289
any way the wave trend oscillator can be put in SC? this is code from Tradeovate.

const predef = require("./tools/predef");
const meta = require("./tools/meta");
const EMA = require("./tools/EMA");
const SMA = require("./tools/SMA");
const typicalPrice = require("./tools/typicalPrice");
const p = require("./tools/plotting");

class waveTrendOscillator {
init() {
this.c1 = EMA(this.props.channelLength);
this.c2 = EMA(this.props.channelLength);
this.a = EMA(this.props.averageLength);
this.s = SMA(this.props.smoothLength);

this.pWt1 = 0.0;
this.pWt2 = 0.0;

this.obIndex = 0;
this.osIndex = 0;

this.crossunderIndex = 0;
this.crossoverIndex = 0;
}

map(d, i, history) {
const typ = typicalPrice(d);

let esa = this.c1(typ);
let dist = this.c2(Math.abs(typ - esa));

let ci = (typ - esa) / (this.props.cciConstant * dist);
let ci2 = Number.isNaN(ci) ? 0 : ci

let wt1 = this.a(ci2);
let wt2 = this.s(wt1);

const obValue = Math.min(this.props.overbought1, this.props.overbought2)
const osValue = Math.max(this.props.oversold1, this.props.oversold2);

// save index of where ob/os condition occurred

if (this.pWt1 obValue) {
this.obIndex = i;
}

if (this.pWt1 >= osValue && wt1 < osValue) {
this.osIndex = i;
}

// crossunder from overbought

let sell = false;
let buy = false;

if (this.pWt1 >= this.pWt2 && wt1 < wt2) {
if (this.obIndex < i && this.obIndex > this.crossunderIndex) {
this.crossunderIndex = i;
sell = true;
}
}

// crossover from oversold

if (this.pWt1 wt2) {
if (this.osIndex < i && this.osIndex > this.crossoverIndex) {
this.crossoverIndex = i;
buy = true;
}
}

this.pWt1 = wt1;
this.pWt2 = wt2;

return {
waveTrend: wt1,
waveTrendSmooth: wt2,
ob1: this.props.overbought1,
ob2: this.props.overbought2,
os1: this.props.oversold1,
os2: this.props.oversold2,
mid: 0,
buy,
sell,
buyColor: this.props.buyColor,
sellColor: this.props.sellColor,
}
}

filter(_, i) {
return i >= this.props.averageLength && i >= this.props.channelLength;
}
}

function tradePlotter(canvas, indicatorInstance, history) {
for(let i=0; i 0) {
if (item.buy || item.sell) {
const x = p.x.get(item);

const item1 = history.get(i - 1);
const x1 = p.x.get(item1);

const y = item.buy ? Math.min(item.waveTrend, item.waveTrendSmooth) : Math.max(item.waveTrend, item.waveTrendSmooth)

canvas.drawLine(
p.offset(x1, y),
p.offset(x, y),
{
color: item.buy ? item.buyColor : item.sellColor,
relativeWidth: 2,
opacity: 1.0
});
}
}
}
}

module.exports = {
name: "waveTrendOscillator",
description: "Wave Trend Oscillator",
calculator: waveTrendOscillator,
params: {
channelLength: predef.paramSpecs.period(10),
averageLength: predef.paramSpecs.period(21),
smoothLength: predef.paramSpecs.period(4),
cciConstant: predef.paramSpecs.number(0.015, 0.001, 0.001),
overbought1: predef.paramSpecs.period(60),
overbought2: predef.paramSpecs.period(53),
oversold1: predef.paramSpecs.period(-60),
oversold2: predef.paramSpecs.period(-53),
buyColor: predef.paramSpecs.color('cyan'),
sellColor: predef.paramSpecs.color('magenta'),
},
tags: [predef.tags.Oscillators],
areaChoice: meta.AreaChoice.NEW,
inputType: meta.InputType.BARS,
plots: {
waveTrend: { title: "Wave Trend"},
waveTrendSmooth: { title: "Wave Trend Smoothed"},
ob1: { title: "Overbought 1", displayOnly: true},
ob2: { title: "Overbought 2", displayOnly: true},
os1: { title: "Oversold 1", displayOnly: true},
os2: { title: "Oversold 2", displayOnly: true},
mid: { title: "Mid", displayOnly: true},
},
plotter: [
predef.plotters.singleline("waveTrend"),
predef.plotters.singleline("waveTrendSmooth"),
predef.plotters.singleline("ob1"),
predef.plotters.singleline("ob2"),
predef.plotters.singleline("os1"),
predef.plotters.singleline("os2"),
predef.plotters.singleline("mid"),
predef.plotters.custom(tradePlotter),
],
schemeStyles: {
dark: {
waveTrend: predef.styles.plot("#00C0C0"),
waveTrendSmooth: predef.styles.plot("#C000C0"),
ob1: predef.styles.plot("#FF0000"),
ob2: predef.styles.plot({ color: "#FF0000", lineStyle: 3 }),
os1: predef.styles.plot("#00FF00"),
os2: predef.styles.plot({ color: "#00FF00", lineStyle: 3 }),
mid: predef.styles.plot("#707070"),
}
}
};