talib.SUB

Subtracts the second array from the first, element by element (Vector Arithmetic Subtraction).

    
    
    
talib.SUB(inReal0, inReal1)

Examples

Subtract the low price from the high price of each K-line.

    javascript
    
    
function main() {
    var records = exchange.GetRecords()
    if (!records) return
    // high price minus low price
    var highs = records.map(function(r) { return r.High })
    var lows = records.map(function(r) { return r.Low })
    var ret = talib.SUB(highs, lows)
    Log(ret)
}

    python
    
    
import talib
def main():
    records = exchange.GetRecords()
    if not records:
        return
    # high price minus low price
    ret = talib.SUB(records.High, records.Low)
    Log(ret)

Returns

Arguments

See Also

Remarks

TA-Lib equivalent: SUB(Array(inReal0),Array(inReal1)) = Array(outReal).

Calculates inReal0[i] - inReal1[i] element by element.

In JavaScript, both inputs must be numeric arrays (extract a field from the K-line data with map first): if a K-line array is passed, both inputs take the close price of the same K-line data and the result is meaningless; arrays of different lengths raise an error.