Math Functions

var result = abs(-10);  // Returns 10
var result = abs(10);   // Returns 10

var result = round(3.7);      // Returns 4
var result = round(3.14159, 2);  // Returns 3.14

var result = floor(3.9);  // Returns 3
var result = floor(-3.1); // Returns -4

var result = ceil(3.1);   // Returns 4
var result = ceil(-3.9);  // Returns -3

var result = max(10, 20);       // Returns 20
var result = max(5, 10, 15);    // Returns 15

var result = min(10, 20);       // Returns 10
var result = min(5, 10, 15);    // Returns 5

var result = sqrt(16);  // Returns 4
var result = sqrt(2);   // Returns 1.414...

var result = pow(2, 3);   // Returns 8 (2^3)
var result = pow(10, 2);  // Returns 100

var result = log(Math.E);  // Returns 1
var result = log(10);      // Returns 2.302...

var result = log10(100);  // Returns 2
var result = log10(1000); // Returns 3

var result = exp(1);  // Returns 2.718... (e^1)
var result = exp(0);  // Returns 1

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);
var totalVolume = sum(source=ohlcvData.volume, period=20);

var average = avg(10, 20, 30);  // Returns 20

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);
var volatility = stdev(source=ohlcvData.close, period=20);

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);
var priceVariance = variance(source=ohlcvData.close, period=20);

//@version=2

define(title="Volatility Bands", position="onchart", axis=false);

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);

var smaValue = sma(source=ohlcvData.close, period=20);
var stdDev = stdev(source=ohlcvData.close, period=20);

var upperBand = smaValue + (2 * stdDev);
var lowerBand = smaValue - (2 * stdDev);

plotLine(value=upperBand, width=1, colors=["red"], label=["Upper"], desc=["Upper Band"]);
plotLine(value=smaValue, width=2, colors=["blue"], label=["SMA"], desc=["Middle Band"]);
plotLine(value=lowerBand, width=1, colors=["green"], label=["Lower"], desc=["Lower Band"]);

//@version=2

define(title="Percent Change", position="offchart", axis=true);

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);

var currentClose = ohlcvData.close[0];
var previousClose = ohlcvData.close[1];
var percentChange = ((currentClose - previousClose) / previousClose) * 100;

var colorIndex = percentChange > 0 ? 0 : 1;

plotBar(value=percentChange, width=1, colors=["green", "red"], colorIndex=colorIndex, label=["% Change"], desc=["Percentage Change"]);

//@version=2

define(title="ATR Indicator", position="offchart", axis=true);

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);

// True Range calculation
var highLow = ohlcvData.high[0] - ohlcvData.low[0];
var highClose = abs(ohlcvData.high[0] - ohlcvData.close[1]);
var lowClose = abs(ohlcvData.low[0] - ohlcvData.close[1]);
var trueRange = max(highLow, max(highClose, lowClose));

// ATR as RMA of True Range
var atrValue = rma(source=trueRange, period=14);

plotLine(value=atrValue, width=2, colors=["orange"], label=["ATR"], desc=["Average True Range"]);

var result = denominator != 0 ? numerator / denominator : 0;