MT4智能交易编程示例 Bears指标

MT4智能交易

MT4智能交易编程示例 Bears指标

1. #property copyright   "路路发智能交易研发中心"
   
2. #property link        "http://www.ea668.com"
   
3. #property description "Bears Power"
   
4. #property strict
   
5. 
   
6. //--- indicator settings
   
7. #property indicator_separate_window
   
8. #property indicator_buffers 1
   
9. #property indicator_color1 Silver
   
10. //--- input parameter
    
11. input int InpBearsPeriod=13; // Bears Period
    
12. //--- buffers
    
13. double ExtBearsBuffer[];
    
14. double ExtTempBuffer[];
    
15. //+------------------------------------------------------------------+
    
16. //| Custom indicator initialization function                         |
    
17. //+------------------------------------------------------------------+
    
18. void OnInit(void)
    
19.   {
    
20.    string short_name;
    
21. //--- 1 additional buffer used for counting.
    
22.    IndicatorBuffers(2);
    
23.    IndicatorDigits(Digits);
    
24. //--- indicator line
    
25.    SetIndexStyle(0,DRAW_HISTOGRAM);
    
26.    SetIndexBuffer(0,ExtBearsBuffer);
    
27.    SetIndexBuffer(1,ExtTempBuffer);
    
28. //--- name for DataWindow and indicator subwindow label
    
29.    short_name="Bears("+IntegerToString(InpBearsPeriod)+")";
    
30.    IndicatorShortName(short_name);
    
31.    SetIndexLabel(0,short_name);
    
32.   }
    
33. //+------------------------------------------------------------------+
    
34. //| Bears Power                                                      |
    
35. //+------------------------------------------------------------------+
    
36. int OnCalculate(const int rates_total,
    
37.                 const int prev_calculated,
    
38.                 const datetime &time[],
    
39.                 const double &open[],
    
40.                 const double &high[],
    
41.                 const double &low[],
    
42.                 const double &close[],
    
43.                 const long &tick_volume[],
    
44.                 const long &volume[],
    
45.                 const int &spread[])
    
46.   {
    
47.    int limit=rates_total-prev_calculated;
    
48. //---
    
49.    if(rates_total<=InpBearsPeriod)
    
50.       return(0);
    
51. //---
    
52.    if(prev_calculated>0)
    
53.       limit++;
    
54.    for(int i=0; i<limit; i++)
    
55.      {
    
56.       ExtTempBuffer[i]=iMA(NULL,0,InpBearsPeriod,0,MODE_EMA,PRICE_CLOSE,i);
    
57.       ExtBearsBuffer[i]=low[i]-ExtTempBuffer[i];
    
58.      }
    
59. //---
    
60.    return(rates_total);
    
61.   }
    
62. //+------------------------------------------------------------------+
    

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