Finding Absolute Value of a Series

[Colebeach]

Hi Alexis C. Montenegro ,

Thanks for your previous posts on external function.

I am trying to plot a moving average of the absolute value of the difference between 2 moving averages.

in other words a moving average of abs( (sma(100,close(0))-sma(50,close(0))) )
The following program works, but I can not seem to get the absolute function working when it is added.

Thanks




function preMain() {

setStudyTitle("SMA Test");
setCursorLabelName("Zero", 0);
setCursorLabelName("SMA", 1);
setDefaultBarFgColor(Color.blue, 0);
setDefaultBarFgColor(Color.red, 1);

var fp1 = new FunctionParameter("Length", FunctionParameter.NUMBER);
fp1.setLowerLimit(1);
fp1.setDefault(50);
}

function main(Length) {

var vZero = 0;
var nMove = efsInternal("range");
var vSmooth = ema(Length,nMove);

return new Array (vSmooth, vZero);
}

function range () {

return (sma(100,close(0))-sma(50,close(0))); // Actually want abs( (sma(60,close(0))-sma(30,close(0))) );
}

[ACM]

Colebeach
abs() is a method of the JavaScript Math object so you need to write Math.abs(your_expression)
See this article in the EFS KnowledgeBase for the complete description and examples of the Math object
Alex

Hi Alexis C. Montenegro ,

Thanks for your previous posts on external function.

I am trying to plot a moving average of the absolute value of the difference between 2 moving averages.

in other words a moving average of abs( (sma(100,close(0))-sma(50,close(0))) )
The following program works, but I can not seem to get the absolute function working when it is added.

Thanks




function preMain() {

setStudyTitle("SMA Test");
setCursorLabelName("Zero", 0);
setCursorLabelName("SMA", 1);
setDefaultBarFgColor(Color.blue, 0);
setDefaultBarFgColor(Color.red, 1);

var fp1 = new FunctionParameter("Length", FunctionParameter.NUMBER);
fp1.setLowerLimit(1);
fp1.setDefault(50);
}

function main(Length) {

var vZero = 0;
var nMove = efsInternal("range");
var vSmooth = ema(Length,nMove);

return new Array (vSmooth, vZero);
}

function range () {

return (sma(100,close(0))-sma(50,close(0))); // Actually want abs( (sma(60,close(0))-sma(30,close(0))) );
}

[Colebeach]

Thanks

Thanks for that. Set me on the right path !

Colebeach
abs() is a method of the JavaScript Math object so you need to write Math.abs(your_expression)
See this article in the EFS KnowledgeBase for the complete description and examples of the Math object
Alex

[ACM]

Colebeach
You are welcome
Alex

Thanks for that. Set me on the right path !