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Anyone has Price Headley's Momentum Divergence Indicator in
metastock?
Here is esignal format. Don't know how to translate to metastock.
********************************************************************
Title: MomentumDivergence Script for eSignal 7.x
By: Chris D. Kryza (Divergence Software, Inc.)
Email: c.kryza@xxxxxxx
Incept: 03/17/2003
Version: 1.0.0
=====================================================================
Fix History:
03/17/2003 - Initial Release
1.0.0
=====================================================================
Project Description:
Price Headley's Momentum Divergence Indicator. This study normalizes
MACD and price and can help to identify periods of strong momentum.
See
http://bigtrends.iqchart.com/partner/bigtrends/education/technical_di
vergance.asp
for a more in-depth description.
Recommended Period values are 15 or 40.
=====================================================================
Various parameters can be adjusted via the eSignal Edit Studies
option:
frFast: Fast component of the MACD calculation.
Default value
is 12.
frSlow: Slow component of the MACD calculation.
Default value
is 26.
frPeriod: Lookback period for the combined
calculation. Default
value is 40.
If you come across any fixes or have any ideas on how to spruce it
up, I
would appreciate it if you would let me know (c.kryza@xxxxxxx).
Dislaimer: For educational purposes only! Obviously, no guarantees
whatsoever and use at your own risk.
*********************************************************************
*/
//Global Variables
var grID = 0;
var stFast = null;
var stSlow = null;
var nMA1 = 0;
var nMA2 = 0;
var nBarcount = 0;
var oHiLo = null;
var oClose = null;
var bInitialized = false;
var aFast = new Array();
var aSlow = new Array();
//== PreMain function required by eSignal to set things up
function preMain() {
var x;
setPriceStudy(false);
setStudyTitle("MOMDiv Plot");
setCursorLabelName("MACD%", 0);
setCursorLabelName("Close%", 1);
setDefaultBarFgColor( Color.red, 0 );
setDefaultBarFgColor( Color.blue, 1 );
//plot the buy/sell bands
addBand( 90.0, PS_SOLID, 2, Color.black );
addBand( 30.0, PS_SOLID, 2, Color.black );
//setComputeOnClose();
//Initialize the arrays
for (x=0; x<205; x++) {
aFast[x] = 0.0;
aSlow[x] = 0.0;
}
grID = 0;
}
//== Main processing function
function main( frFast, frSlow, frPeriod ) {
var x;
var nRet1, nRet2;
var nPlot1, nPlot2;
if (frPeriod==null) {
frPeriod = 40;
}
//if not-a-number, return an error
if (isNaN( frPeriod ) ) {
displayError("Error: Invalid frPeriod setting. Must
be a positive integer value.");
return;
}
//period should be between 2 and 200
frPeriod = Math.max( Math.min( frPeriod, 200 ), 2 );
if (frFast==null) {
frFast = 12;
}
//if not-a-number, return an error
if (isNaN( frFast ) ) {
displayError("Error: Invalid frFast setting. Must
be a positive integer value.");
return;
}
if (frSlow==null) {
frSlow = 26;
}
//if not-a-number, return an error
if (isNaN( frSlow ) ) {
displayError("Error: Invalid frSlow setting. Must
be a positive integer value.");
return;
}
if (getBarState() == BARSTATE_ALLBARS) {
return null;
}
//Set up our studies on the first pass through
if (bInitialized==false) {
bInitialized = true;
stFast = new MAStudy(frFast, 0, "Close",
MAStudy.EXPONENTIAL);
stSlow = new MAStudy(frSlow, 0, "Close",
MAStudy.EXPONENTIAL);
//initialize our objects
oHiLo = new Object();
oHiLo.Val1 = 0.0;
oHiLo.Val2 = 0.0;
oClose = new Object();
oClose.Val1 = 0.0;
oClose.Val2 = 0.0;
}
nBarcount++;
if (nBarcount < Math.max(frFast, frSlow)+frPeriod+5) return;
//cycle the arrays on new bar
if (getBarState() == BARSTATE_NEWBAR) {
aFast.unshift( 0 );
aSlow.unshift( 0 );
aFast.pop();
aSlow.pop();
}
//get our MA values
nMA1 = stFast.getValue( MAStudy.MA );
nMA2 = stSlow.getValue( MAStudy.MA );
aFast[0] = nMA1;
aSlow[0] = nMA2;
getHiLoMACD( frPeriod, oHiLo );
getHiLoClose( frPeriod, oClose );
nRet1 = oHiLo.Val1 - oHiLo.Val2;
if (nRet1==0) nRet1 = 50;
nRet2 = oClose.Val1 - oClose.Val2;
if (nRet2==0) nRet2 = 50;
//macd divergence plot
nPlot1 = 100 * ((nMA1-nMA2) - oHiLo.Val2) / nRet1;
//close divergence plot
nPlot2 = 100 * (close() - oClose.Val2) / nRet2;
if ((!isNaN( nPlot1 )) && (!isNaN( nPlot2 ))) {
return new Array( nPlot1, nPlot2 );
}
}
function getHiLoMACD( nPeriod, oReturn ) {
var x;
var HH = -999999999.0;
var LL = 999999999.0;
for(x=0; x<nPeriod; x++) {
HH = Math.max( aFast[x]-aSlow[x], HH );
LL = Math.min( aFast[x]-aSlow[x], LL );
}
oReturn.Val1 = HH;
oReturn.Val2 = LL;
return;
}
function getHiLoClose( nPeriod, oReturn ) {
var x;
var HH = -999999999.0;
var LL = 999999999.0;
for(x=0; x<nPeriod; x++) {
HH = Math.max( close(-x), HH );
LL = Math.min( close(-x), LL );
}
oReturn.Val1 = HH;
oReturn.Val2 = LL;
return;
}
/*************************************************
SUPPORT FUNCTIONS
**************************************************/
//== gID function assigns unique identifier to graphic/text routines
function gID() {
grID ++;
return( grID );
}
//== displayError function displays an error to the user
function displayError( ErrStr ) {
clearText();
drawTextRelative(20, 50, ErrStr, Color.maroon, Color.lightgrey,
Text.FRAME | Text.ONTOP | Text.RELATIVETOLEFT |
Text.RELATIVETOBOTTOM, null, 16, gID());
}
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