PassInputsToStudy.efs

[eSignal_JasonK]

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:

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;
}