PassInputsToStudy.efs

PassInputsToStudy.efs    

File Name: PassInputsToStudy.efs

Description:
This help formula outlines a method for passing user inputs from the "Edit Studies" option to change the parameters of a Moving Average study.

Formula Parameters:

• Input Parameter: Default value
• nLength: 21
• nOffset: 0
• nPriceSorce: C
• valid iputs: O, H, L and C
• nType: MAStudy.SIMPLE
• valid inputs: MAStudy.SIMPLE, MAStudy.EXPONENTIAL, MAStudy.WEIGHTED and MAStudy.VOLUMEWEIGHTED

Notes:

NA

Download File:
PassInputsToStudy.efs


EFS Code:

/*****************************************************************
Provided By : eSignal. (c) Copyright 2003
*****************************************************************/

function preMain() {
    setPriceStudy(true);
}

var study = null;

function main(nLength, nOffset, nPriceSource, nType) {
	if (study == null) {
		//check for valid inputs
		if (nLength == null)
			nLength = 21;
		if (nOffset == null) {
			nOffset = 0;
        } else {
            nOffset = Math.round(nOffset);
        }
		if (nPriceSource == null) {
			nPriceSource = "C";
		} else if(nPriceSource == "C" || nPriceSource == "O" || nPriceSource == "H" || nPriceSource == "L") {
			nPriceSource = nPriceSource;
		} else {
			nPriceSource = "C";
		}
		if (nType == null) {
			nType = "MAStudy.SIMPLE";
		} else if(nType == "MAStudy.EXPONENTIAL" || nType == "MAStudy.SIMPLE" || nType == "MAStudy.WEIGHTED" || nType == "MAStudy.VOLUMEWEIGHTED") {
			nType = nType;
		} else {
			nType = "MAStudy.SIMPLE";
		}
		study = new MAStudy(nLength, nOffset, nPriceSource, eval(nType));
	}
	
    var vValue = study.getValue(MAStudy.MA);
    if (vValue == null)
        return;
    
    return vValue;
}