Description:
Aroon Up
Formula Parameters:
Length : 14
Notes:
This formula is one of the components of the Aroon and Aroon Oscillator
indicators.
Developed by Tushar Chande in 1995, the Aroon is an indicator system
that can be used to determine whether a stock is trending or not and
how strong the trend is. "Aroon" means "Dawn's Early Light" in Sanskrit
and Chande choose that name for this indicator since it is designed to
reveal the beginning of a new trend.
The Aroon indicator consists of two lines, Aroon(up) and Aroon(down).
The Aroon Oscillator is a single line that is defined as the difference
between Aroon(up) and Aroon(down). All three take a single parameter which
is the number of time periods to use in the calculation. Since Aroon(up) and
Aroon(down) both oscillate between 0 and +100, the Aroon Oscillator ranges
from -100 to +100 with zero serving as the crossover line.
AroonUp indicator is calculated according to formula:
AroonUp = 100 * (Period - PeriodHigh) / Period
where PeriodHigh = Number of bars since highest high of the Period
AroonUp for a given time period is calculated by determining how much time
(on a percentage basis) elapsed between the start of the time period and the point
at which the highest closing price during that time period occurred. When the stock
is setting new highs for the time period, AroonUp will be 100. If the stock has
moved higher every day during the time period, AroonUp will be zero.
Download File:
AroonUp.efs
EFS Code:
PHP Code:
/*********************************
Provided By:
eSignal (Copyright c eSignal), a division of Interactive Data
Corporation. 2009. All rights reserved. This sample eSignal
Formula Script (EFS) is for educational purposes only and may be
modified and saved under a new file name. eSignal is not responsible
for the functionality once modified. eSignal reserves the right
to modify and overwrite this EFS file with each new release.
Description:
AroonUp
Version: 1.0 05/14/2009
Formula Parameters: Default:
Length 14
Notes:
This formula is one of the components of the Aroon and Aroon Oscillator
indicators.
Developed by Tushar Chande in 1995, the Aroon is an indicator system
that can be used to determine whether a stock is trending or not and
how strong the trend is. "Aroon" means "Dawn's Early Light" in Sanskrit
and Chande choose that name for this indicator since it is designed to
reveal the beginning of a new trend.
The Aroon indicator consists of two lines, Aroon(up) and Aroon(down).
The Aroon Oscillator is a single line that is defined as the difference
between Aroon(up) and Aroon(down). All three take a single parameter which
is the number of time periods to use in the calculation. Since Aroon(up) and
Aroon(down) both oscillate between 0 and +100, the Aroon Oscillator ranges
from -100 to +100 with zero serving as the crossover line.
AroonUp indicator is calculated according to formula:
AroonUp = 100 * (Period - PeriodHigh) / Period
where PeriodHigh = Number of bars since highest high of the Period
AroonUp for a given time period is calculated by determining how much time
(on a percentage basis) elapsed between the start of the time period and the point
at which the highest closing price during that time period occurred. When the stock
is setting new highs for the time period, AroonUp will be 100. If the stock has
moved higher every day during the time period, AroonUp will be zero.
**********************************/
function preMain() {
setStudyTitle("Aroon Up");
setCursorLabelName("ArnUp", 0);
setDefaultBarFgColor(Color.red,1);
var fp1 = new FunctionParameter("nInputPeriod", FunctionParameter.NUMBER);
fp1.setName("Length");
fp1.setLowerLimit(1);
fp1.setDefault(14);
}
var bInit = null;
var AryClose;
function main(nInputPeriod){
var vState = getBarState();
if (vState == BARSTATE_ALLBARS || bInit == false){
AryClose = new Array(nInputPeriod+1);
bInit = true;
}
if (vState == BARSTATE_NEWBAR) {
AryClose.pop();
AryClose.unshift(high(0));
} else {
AryClose[0] = high(0);
}
if (AryClose[AryClose.length-1] == null) return;
var vIndex = findHighIndex(AryClose);
return ((nInputPeriod-vIndex)/nInputPeriod)*100;
}
function findHighIndex(AryIn){
var vHighIndex = 0;
var vHigh = 0.0;
vHigh = AryIn[0];
for(var i = 1; i < AryIn.length; i++){
if (vHigh < AryIn[i]) {
vHigh = AryIn[i];
vHighIndex = i;
}
}
return vHighIndex;
}