How do you calculate the Coppock Curve in Esignal ?

[Digs]

http://www.paritech.com/paritech-site/education/technical/custom/indicators/coppock.asp

http://www.safehaven.com/article-1766.htm

Code in metastock pro software

/* CCT Coppock Curve
**
** Originally developed by Steve Karnish
** http://www.cedarcreektrading.com
**
** AFL translation by Peter Gialames
**
** Set scaling: Automatic
** Grid: Middle, Level 0
*/

graph0=(ROC(CLOSE,14 )*10 + ROC(CLOSE,11)*10 +
ROC(Ref(CLOSE,-1),14)*9 + ROC(Ref(CLOSE,-1),11)*9 +
ROC(Ref(CLOSE,-2),14)*8 + ROC(Ref(CLOSE,-2),11)*8 +
ROC(Ref(CLOSE,-3),14)*7 + ROC(Ref(CLOSE,-3),11)*7 +
ROC(Ref(CLOSE,-4),14)*6 + ROC(Ref(CLOSE,-4),11)*6 +
ROC(Ref(CLOSE,-5),14)*5 + ROC(Ref(CLOSE,-5),11)*5 +
ROC(Ref(CLOSE,-6),14)*4 + ROC(Ref(CLOSE,-6),11)*4 +
ROC(Ref(CLOSE,-7),14)*3 + ROC(Ref(CLOSE,-7),11)*3 +
ROC(Ref(CLOSE,-8),14)*2 + ROC(Ref(CLOSE,-8),11)*2 +
ROC(Ref(CLOSE,-9),14) + ROC(Ref(CLOSE,-9),11))/2;

[dloomis]

By modifing Alex' code from MAofROC located

http://share.esignal.com/groupcontents.jsp?folder=Formulas&groupid=10

/************************************************** *******
Alexis C. Montenegro © April 2003
Use and/or modify this code freely. If you redistribute it
please include this and/or any other comment blocks and a
description of any changes you make.
************************************************** ********/

var vROC = null;
var vMAofROC = null;

function preMain() {
setStudyTitle("MAofROC");
setCursorLabelName("ROC", 0);
setDefaultBarFgColor(Color.blue, 0);
setCursorLabelName("MAofROC", 1);
setDefaultBarFgColor(Color.red, 1);
checkVersion(2,"http://share.esignal.com/ContentRoot/ACM%20Test/Formulas/MAofROC.efs"); //Comment this line out if modifying the code

var fp1 = new FunctionParameter("ROCLength", FunctionParameter.NUMBER);
fp1.setLowerLimit(1);
fp1.setDefault(10); //Edit this value to set a new default

var fp2 = new FunctionParameter("ROCSource", FunctionParameter.STRING);
fp2.setName("ROCSource");
fp2.addOption("Close");
fp2.addOption("High");
fp2.addOption("Low");
fp2.addOption("Open");
fp2.addOption("HL/2");
fp2.addOption("HLC/3");
fp2.addOption("OHLC/4");
fp2.setDefault("Close"); //Edit this value to set a new default

var fp3 = new FunctionParameter("MALength", FunctionParameter.NUMBER);
fp3.setLowerLimit(1);
fp3.setDefault(5); //Edit this value to set a new default

var fp4 = new FunctionParameter("MAType", FunctionParameter.STRING);
fp4.setName("MAType");
fp4.addOption("MAStudy.SIMPLE");
fp4.addOption("MAStudy.EXPONENTIAL");
fp4.addOption("MAStudy.WEIGHTED");
fp4.addOption("MAStudy.VOLUMEWEIGHTED");
fp4.setDefault("MAStudy.SIMPLE"); //Edit this value to set a new default
}

function main(){//ROCLength, ROCSource, MALength, MAType) { dont use the fps

if (vROC11 == null) vROC11 = new ROCStudy(11, close() );//set to 11
if (vROC14 == null) vROC14 = new ROCStudy(14, close() );//set to 14
if (vMAofROC11 == null) vMAofROC11 = new MAStudy(10, 0, vROC11, MAStudy.MA, MAStudy.SIMPLE);//ma of roc11
if (vMAofROC14 == null) vMAofROC14 = new MAStudy(10, 0, vROC14, MAStudy.MA, MAStudy.SIMPLE);//ma of roc14
avg = (vMAofROC14 + vMAofROC11) / 2;//avg the two

/******************************************
Insert your code following this text block
Use vROC.getValue(ROCStudy.ROC) and
vMAofROC.getValue(MAStudy.MA) for your code
*******************************************/



return (avg);//plot them
}