[eSIGNAL] StiffnessIndicator指标[eSIGNAL]

For this month’s Traders’ Tip, we’ve provided the StiffnessIndicator.efs study based on the article by Markos Katsanos in this issue, “The Stiffness Indicator.” This study attempts to determine if markets are in a strong price trend.

The study contains formula parameters that may be configured through the edit chart window (right-click on the chart and select “edit chart”). A sample chart is shown in Figure 2.

[attach]5571[/attach]

1. /*********************************
   
2. Provided By:  
   
3. eSignal (Copyright c eSignal), a division of Interactive Data
   
4. Corporation. 2016. All rights reserved. This sample eSignal
   
5. Formula Script (EFS) is for educational purposes only and may be
   
6. modified and saved under a new file name.  eSignal is not responsible
   
7. for the functionality once modified.  eSignal reserves the right
   
8. to modify and overwrite this EFS file with each new release.
   
9. 
   
10. Description:        
    
11.     The Stiffness Indicator by Markos Katsanos
    
12.    
    
13. 
    
14. Version:            1.00  9/14/2018
    
15. 
    
16. Formula Parameters:                     Default:
    
17. Period                                  60
    
18. MA DAYS                                 100
    
19. STIFFNESS CRITICAl                      90
    
20. 
    
21. Notes:
    
22. The related article is copyrighted material. If you are not a subscriber
    
23. of Stocks & Commodities, please visit www.traders.com.
    
24. 
    
25. **********************************/
    
26. 
    
27. var fpArray = new Array();
    
28. 
    
29. function preMain(){
    
30.     setPriceStudy(false);
    
31.     setStudyTitle("Stiffness Indicator");
    
32.     setCursorLabelName("STIFFNESS");
    
33.     setPlotType(PLOTTYPE_HISTOGRAM);
    
34.    
    
35.     var x = 0;
    
36.     fpArray[x] = new FunctionParameter("Period", FunctionParameter.NUMBER);
    
37.         with(fpArray[x++]){
    
38.         setName("STIFFNESS PERIOD");
    
39.         setLowerLimit(1);
    
40.         setDefault(60);
    
41.         
    
42.     }
    
43. 
    
44.     fpArray[x] = new FunctionParameter("MAB", FunctionParameter.NUMBER);
    
45.         with(fpArray[x++]){
    
46.         setName("MA DAYS");
    
47.         setLowerLimit(1);
    
48.         setDefault(100);
    
49.       
    
50.     }
    
51.     fpArray[x] = new FunctionParameter("STIFFCRIT", FunctionParameter.NUMBER);
    
52.         with(fpArray[x++]){
    
53.         setName("STIFFNESS CRITICAl");
    
54.         setLowerLimit(1);
    
55.         setDefault(90);
    
56.         
    
57.     }
    
58. }
    
59. 
    
60. var bInit = false;
    
61. var bVersion = null;
    
62. var xClose = null;
    
63. var xMA2 = null;
    
64. var nEntryPrice = null;
    
65. var xLow = null;
    
66. var xHigh = null;
    
67. var vStopPrice = null;
    
68. var bIsLong = null;
    
69. var xCloseSPY = null;
    
70. var xEMA = null;
    
71. var xStiffness = null;
    
72. var bWasLong = false;
    
73. 
    
74. 
    
75. function main(Period, MAB, STIFFCRIT){
    
76.     if (bVersion == null) bVersion = verify();
    
77.     if (bVersion == false) return;
    
78.         
    
79.     if (getBarState() == BARSTATE_ALLBARS){
    
80.         bInit = false;
    
81.         bIsLong = false;
    
82.     }
    
83. 
    
84.     if (getCurrentBarCount() < Period) return;
    
85.    
    
86.     if (!bInit){
    
87.         
    
88.         xCloseSPY = close("SPY");
    
89.         xClose = close();
    
90.         xHigh = high();
    
91.         xLow = low();
    
92.         bIsLong = false;
    
93.         bWasLong = false;
    
94.             
    
95.         xMA2 = efsInternal("Calc_MA2", xClose, MAB);
    
96.         xEMA = efsInternal("Calc_Ema", xCloseSPY, MAB);
    
97.         xStiffness = efsInternal("Calc_Stif", xClose, Period, xMA2);
    
98.         
    
99.         addBand(STIFFCRIT, PS_DASH, 1, Color.grey, 2);
    
100.         
     
101.         bInit = true;
     
102.     }
     
103. 
     
104.    
     
105.     if (getBarState() == BARSTATE_NEWBAR && xStiffness.getValue(-1) != null)  {   
     
106.          if ((xStiffness.getValue(0)<= STIFFCRIT) && bIsLong){      
     
107.             
     
108.             if (xStiffness.getValue(-1) > STIFFCRIT){
     
109.                 drawTextRelative(0, TopRow1, "\u00EA", Color.red, null, Text.PRESET|Text.CENTER, "Wingdings", 10, "Exit"+rawtime(0));
     
110.                 bIsLong = false;                    
     
111.             }
     
112.             else {
     
113.                 removeText("Long"+rawtime(0));
     
114.                 removeText("Text"+rawtime(0));
     
115.             }
     
116.             bIsLong = false;
     
117.         }
     
118.    
     
119.         if (xEMA.getValue(0) >= xEMA.getValue(-2) && !bIsLong && (xStiffness.getValue(-1) < STIFFCRIT)){                  
     
120.             
     
121.             if ((xStiffness.getValue(1) > STIFFCRIT)){
     
122.                  
     
123.                 drawTextRelative(0, TopRow1, "\u00E9", Color.green, null, Text.PRESET|Text.CENTER, "Wingdings", 10, "Long"+rawtime(0));
     
124.                 bIsLong = true;
     
125.                 bWasLong = true;
     
126.             }      
     
127.             else {
     
128.                 removeText("Exit"+rawtime(0));
     
129.                 removeText("TextExit"+rawtime(0));
     
130.                 if (bWasLong)
     
131.                     bIsLong = true;
     
132.                     
     
133.             }
     
134.         }
     
135.     }
     
136.     return (xStiffness.getValue(0))
     
137. }
     
138. 
     
139. var P = null;
     
140. 
     
141. function Calc_Stif (xClose, Period, xMA2){
     
142.     if (xClose.getValue(-Period) == null || xMA2.getValue(-Period) == null) return;
     
143.    
     
144.     P = 0;
     
145.     for (var i = 0; i < Period; i++) {
     
146.         
     
147.         if (xClose.getValue(-i) > xMA2.getValue(-i)) P++;
     
148.     }
     
149.     return (P * 100 / Period);
     
150. }
     
151. 
     
152. function Calc_MA2(xClose, MAB){   
     
153.     if (xClose.getValue(-MAB) == null) return;
     
154.     return (sma(MAB) - 0.2 * stdDev(MAB));
     
155. }
     
156. 
     
157. function Calc_Ema(xCloseSPY, MAB){
     
158.     if (xCloseSPY.getValue(-MAB) == null) return;
     
159.     return ema(MAB, sym("SPY," + getInterval()));
     
160. }
     
161. 
     
162. function verify(){
     
163.     var b = false;
     
164.     if (getBuildNumber() < 3756){
     
165.         
     
166.         drawTextAbsolute(5, 35, "This study requires version 10.6 or later.",
     
167.             Color.white, Color.blue, Text.RELATIVETOBOTTOM|Text.RELATIVETOLEFT|Text.BOLD|Text.LEFT,
     
168.             null, 13, "error");
     
169.         drawTextAbsolute(5, 20, "Click HERE to upgrade.@URL=http://www.esignal.com/download/default.asp",
     
170.             Color.white, Color.blue, Text.RELATIVETOBOTTOM|Text.RELATIVETOLEFT|Text.BOLD|Text.LEFT,
     
171.             null, 13, "upgrade");
     
172.         return b;
     
173.     }
     
174.     else
     
175.         b = true;
     
176.    
     
177.     return b;
     
178. }

复制代码

下载 (70.73 KB)

2018-11-27 16:45