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Here is an eSignal script of MACD similar to the one contained in
nexgen software that costs over $10,000 which is a bollinger band
study on macd. What changes should I make to have this run in AB?
Thanks for any suggestions.
Dennis
eSignal Formula Script --- Printed on: 12/1/2007, 11:14:53 PM ---
Page 1
1 /*
2 MACD BB
3 Developed by David Laffineuse, December 2007
4 http://tradersguild.wordpress.com
5 trader2be@xxxxxxxxx
6 */
7
8 var gUpperBoll = null;
9 var gLowerBoll = null;
10 var gMACD = null;
11 var gTagID = null;
12
13 function preMain() {
14
15 setPriceStudy(false);
16 setStudyTitle("DL_MACD_BB");
17 setCursorLabelName("DL_MACD_UB",0);
18 setCursorLabelName("DL_MACD_LB",1);
19 setDefaultBarFgColor(Color.yellow,0);
20 setDefaultBarFgColor(Color.yellow,1);
21 setPlotType(PLOTTYPE_LINE,0);
22 setPlotType(PLOTTYPE_LINE,1);
23 setDefaultBarThickness(1,0);
24 setDefaultBarThickness(1,1);
25
26 fp1 = new FunctionParameter( "MACD_FL", FunctionParameter.NUMBER);
27 with(fp1) {
28 setName("MACD Fast Length");
29 setDefault(12);
30 }
31 fp2 = new FunctionParameter( "MACD_SL", FunctionParameter.NUMBER);
32 with(fp2) {
33 setName("MACD Slow Length");
34 setDefault(26);
35 }
36 fp3 = new FunctionParameter( "MACD_SM", FunctionParameter.NUMBER);
37 with(fp3) {
38 setName("MACD Smoothing");
39 setDefault(9);
40 }
41 fp4 = new FunctionParameter( "Boll_Length",
FunctionParameter.NUMBER);
42 with(fp4) {
43 setName("Bollinger Length");
44 setDefault(20);
45 }
46 fp5 = new FunctionParameter( "Boll_STD", FunctionParameter.NUMBER);
47 with(fp5) {
48 setName("Bollinger Standard Deviation");
49 setDefault(2);
50 }
51
52 }
53
54 function main(MACD_FL,MACD_SL,MACD_SM,Boll_Length,Boll_STD){
55
56 var dblMACD = null; // MACD value @ current bar
57 var dblMACD_1 = null; // MACD value @ previous bar
58 var dblUpperBoll = null; // Upper BB value
59 var dblLowerBoll = null; // Lower BB value
60 var strBasisColor = null; // Basis color
61 var strCircleColor = null; // Circle Color
62
63 // Instantiations of studies (done once)
64
65 if (gMACD == null) {
66 gMACD = macd(MACD_FL,MACD_SL,MACD_SM);
67 gUpperBoll = upperBB(Boll_Length,Boll_STD,gMACD);
68 gLowerBoll = lowerBB(Boll_Length,Boll_STD,gMACD);
69 }
70
71 // Rounding required to enable proper white circle assessment
72 dblMACD = Math.round((gMACD.getValue(0))*10000)/10000;
73 dblMACD_1 = Math.round((gMACD.getValue(-1))*10000)/10000;
74 dblUpperBoll = Math.round((gUpperBoll.getValue(0))*10000)/10000;
75 dblLowerBoll = Math.round((gLowerBoll.getValue(0))*10000)/10000;
C:\Program Files\eSignal\Formulas\DL_Formulas\DL_MACD_BB.efs --- File
time: 10:55:42 PM
eSignal Formula Script --- Printed on: 12/1/2007, 11:14:53 PM ---
Page 2
76
77 // MACD plot
78 if (dblMACD > dblMACD_1) strCircleColor = "Color.green";
79 else if (dblMACD == dblMACD_1) strCircleColor = "Color.white";
80 else if (dblMACD < dblMACD_1) strCircleColor = "Color.red";
81
82 drawShapeRelative(0, dblMACD, Shape.CIRCLE, null, eval
(strCircleColor), Shape.ONTOP );
83
84 // changes the color of the band based on the value of the MACD
85 if (dblMACD >= 0) strBasisColor = "Color.green"; else
strBasisColor = "Color.red";
86
87 drawLineRelative(-1,0,0,0, PS_SOLID, 2, eval
(strBasisColor),fnGetTagID());
88 addBand(0,PS_SOLID,2,eval(strBasisColor),"0line");
89
90 return new Array (dblUpperBoll,dblLowerBoll);
91
92 }
93 function fnGetTagID() {
94 gTagID += 1;
95 return gTagID;
96 }
C:\Program Files\eSignal\Formulas\DL_Formulas\DL_MACD_BB.efs --- File
time: 10:55:42 PM
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