Average True Range (SDK Trading)
The Average true range does not provide an indication of market trend, simply the degree of market volatility. The average true range is usually measured by an N-period smoothed moving average of the true range values.
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Average True Range (SDK Trading)
registerIndicator("atr", "Average True Range(v1.0)", function (context) {
var dataInputClose = getDataInput(context, 0)
var dataInputHigh = getDataInput(context, 1)
var dataInputLow = getDataInput(context, 2)
var tmpLine = getDataOutput(context, "tmp")
var dataOutput = getDataOutput(context, "atr")
var period = getIndiParameter(context, "period")
var calculatedLength = getCalculatedLength(context)
var i = calculatedLength
var high = null
var low = null
var prevClose = null
if (i > 0) {
i--
} else {
tmpLine[i] = 0
i = 1
}
while (i < dataInputClose.length) {
high = dataInputHigh[i]
low = dataInputLow[i]
prevClose = dataInputClose[i - 1]
tmpLine[i] = Math.max(high, prevClose) - Math.min(low, prevClose)
i++
}
sma(tmpLine, dataOutput, calculatedLength, period)
},[{
name: "period",
value: 14,
required: true,
type: PARAMETER_TYPE.INTEGER,
range: [1, 100]
}],
[{
name: DATA_NAME.CLOSE,
index: 0
},{
name: DATA_NAME.HIGH,
index: 1
},{
name: DATA_NAME.LOW,
index: 2
}],
[{
name: "tmp",
visible: false
},{
name: "atr",
visible: true,
renderType: RENDER_TYPE.LINE,
color: "steelblue"
}],
WHERE_TO_RENDER.SEPARATE_WINDOW)