How to get the angle of a moving average?

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4	jretzloff 2007.05.09 10:04 Could you please post some code with context as my code continues to return an angle of 0? For example, find angle of SMA 50 over 10 periods.

1631	DxdCn 2007.05.09 10:36 jretzloff wrote: Could you please post some code with context as my code continues to return an angle of 0? For example, find angle of SMA 50 over 10 periods. :) why do you not post your code continues to return an angle of 0 for other to help you ?

jretzloff 2007.05.09 11:01

DxdCn wrote:

jretzloff wrote:
Could you please post some code with context as my code continues to return an angle of 0? For example, find angle of SMA 50 over 10 periods.

:) why do you not post your code continues to return an angle of 0 for other to help you ?

Basically, because it is full of crap i have been trying to get it to work with. ..full of print statements, etc.. It is a total hack to try and test computation for possible use in visualization later. Anyway, here it is:

//+------------------------------------------------------------------+
//|                                                  Angle of MA.mq4 |
//|                                Copyright © 2007,                 |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2007"
#property link      ""
 
#property indicator_separate_window
#property indicator_minimum -60.0
#property indicator_maximum 60.0
#property indicator_buffers 1
#property indicator_color1 Lime
#property indicator_width1 3
/*#property indicator_color2 Red
#property indicator_width2 3
*/
 
extern int MAPeriod = 50;
extern int SignalPeriod = 10;
 
double posAngle[], negAngle[];
 
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
 
   IndicatorBuffers(1);
   
   SetIndexBuffer(1, posAngle);
   //SetIndexStyle(1, DRAW_ARROW);
   SetIndexStyle(1, DRAW_HISTOGRAM);
   //SetIndexArrow(1, 110);
   SetIndexLabel(1, "Positive Angle");
   SetIndexEmptyValue(1, 0.0);
   
   /*SetIndexBuffer(2, negAngle);
   //SetIndexStyle(2, DRAW_ARROW);
   SetIndexStyle(2, DRAW_HISTOGRAM);
   //SetIndexArrow(2, 110);
   SetIndexLabel(2, "Negative Angle");
   SetIndexEmptyValue(2, 0.0);*/
   
   ArrayInitialize(posAngle, 0.0);
   //ArrayInitialize(negAngle, 0.0);
 
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   
   int counted_bars = IndicatorCounted();
   if(counted_bars < 0) 
       return(-1);
   if(counted_bars > 0) 
       counted_bars--;
   int limit = Bars - counted_bars; 
   
   double angle = 0.0;
   double price1 = 0.0, price2 = 0.0;
//----
   for(int x = 0; x < limit; x++) 
   {
      //if (x >= MAPeriods) 
      //{
         angle = 0.0;
         price1 = iMA(Symbol(),0,MAPeriod,0, MODE_SMA,PRICE_CLOSE,0);
         price2 = iMA(Symbol(),0,MAPeriod,SignalPeriod, MODE_SMA,PRICE_CLOSE,0);
         double test = (SignalPeriod-0.0)/WindowBarsPerChart();
         //Print("test: ", test);
         Print("Price1/2 ", price1, "/", price2, " angle->", angle);
         Print("price1-price2: ", price1-price2);
         //Print("WindowPriceMin(): ", WindowPriceMin());
         //Print("WindowPriceMax(): ", WindowPriceMax());
         //Print("WindowPriceMax()- WindowPriceMin(): ", WindowPriceMax()- WindowPriceMin());
         //Print("WindowBarsPerChart(): ", WindowBarsPerChart());
         //Print("SignalPeriod: ", SignalPeriod);
         //Print("(SignalPeriod-0)/WindowBarsPerChart()): ", (SignalPeriod-0.0)/WindowBarsPerChart());
         
         
         if (price1-price2 > 0)
            angle = MathArctan(MathTan(((price1-price2)/(WindowPriceMax()- WindowPriceMin()))/((SignalPeriod-0.0)/WindowBarsPerChart())))*180/3.14; 
         else
            angle = 0.0;
            
         Print("Angle > 0: ", angle>0.0);
         Print("Angle < 0: ", angle<0.0);
         
         if (angle > 0.0)
         {
            Print("+++++++++++++++++++ ANGLE +++++++++++++++++++");
            posAngle[x] = angle;
            //negAngle[x] = 0.0;
         }
         else if ( angle < 0.0)
         {
            Print("------------------- ANGLE -------------------");
            //negAngle[x] = angle;
            posAngle[x] = 0.0;  
         }
         else // some error occurred
         {
            Print("******************* ANGLE *******************");
            posAngle[x] = 0.0;
            //negAngle[x] = 0.0;
         }
         
      /*}
      else
      {
         posAngle[x] = 0.0;
         negAngle[x] = 0.0;
      }*/
      Print("posAngle[x]: ", posAngle[x]);
      Print("negAngle[x]: ", negAngle[x]);
      Print("Angle [", TimeToStr(Time[x], TIME_DATE|TIME_MINUTES), "] ---------------------------------------------> ", angle);
   }
//----
   
//----
   return(0);
  }
//+------------------------------------------------------------------+

1631

DxdCn 2007.05.10 18:28

NO need so many cdes!
In you cade:
MathArctan(MathTan(((price1-price2)/(WindowPriceMax()- WindowPriceMin()))/((SignalPeriod-0. 0)/WindowBarsPerChart())))*180/3.14;

What is the meaning of "SignalPeriod" and why?

You know,generally, an angle is the realtion betweent a line and X axes, that line is defined by two points.
In your calculation , price2 and price1 are two values at same X coordinate,

In my formula, use (delt Y) / (delt X) to calculate angle :
MathArctan(MathTan(
((price1-price2)/(WindowPriceMax()- WindowPriceMin())) // is delt Y
/
((shift2-shift1)/WindowBarsPerChart()) // is delt X
))
*180/3.14

4	jretzloff 2007.05.10 21:13 what would be the values for shift1 and shift2? or where are they calculated from? i know this has been my problem but don't understand how to apply with the moving average.

1631

DxdCn 2007.05.11 07:47

here, an angle is the realtion betweent a line and X axes,
a line is defined by two points.
(price1,shift1), (price2,shift2) are that two points' coordinate. shift same as x in you code.
---------------------------------------------------
other words, if you need to calculate the angle of any two lines, you need 3 or 4 points ( two line need 3 or 4 points to define) , and need more knowlesge of trigonometric functions.
from you code , I guess you want to calculate the angle of any two lines (like two lines of MACD), not the angle of one line and X axes.
So you need 3 or 4 points , should review more knowlesge of trigonometric functions, maybe law of cosines.
--------------------------
Or , 1st , calculate each angle of one of lines and X axes, 2nd, their difference is the angle of that two lines .

jretzloff 2007.05.11 08:47

thank you for your response, i am only trying to calculate the angle of a single line, i.e. a moving average and the x-axis. i do know enough about trig to perform the calculations, just not with what is available through MT.

very simply, i would like to calculate the current angle of the MA at shift 0 with the second reference point being the MA at SignalPeriod or MA at ? bars earlier. the other reference point would be the intersect of the shift 0 y and the SignalPeriod x.

1631

DxdCn 2007.05.11 10:45

If so, price2 should change to :
price2 = iMA(Symbol(),0,MAPeriod,0, MODE_SMA,PRICE_CLOSE,SignalPeriod);

X coordinate (SignalPeriod) should be last parameter of iMA(....) function, not 4th parather. (4th parather: ma_shift is another meaning, not use it except you know what it is !!!!)
Now Ok, try again!

109

kurkafund 2007.05.11 12:54

  Whats Wrong with this code ? ? ? 
  I am trying to 4 angles but I keep getting a divide 0 error ? 
  Thanks, 
  KK
  
 
  VectorPer = 16;
 
  HighStartPoint       = iHigh(Symbol(),0,VectorPer);
  PreviousBarHigh      = iHigh(Symbol(),0,SIGNALCANDLE+1);
  HighestPoint         = High[iHighest(Symbol(),0,MODE_HIGH,VectorPer,SIGNALCANDLE+1)];
  HighestAngle         = MathArctan(MathTan(((HighStartPoint-HighestPoint)/(WindowPriceMax()- WindowPriceMin()))/((VectorPer-SIGNALCANDLE+1)/WindowBarsPerChart())))*180/3.14;
  PreviousHighBarAngle = MathArctan(MathTan(((HighStartPoint-PreviousBarHigh)/(WindowPriceMax()- WindowPriceMin()))/((VectorPer-SIGNALCANDLE+1)/WindowBarsPerChart())))*180/3.14;
 
  pHighStartPoint       = iHigh(Symbol(),0,VectorPer+1);
  pPreviousBarHigh      = iHigh(Symbol(),0,SIGNALCANDLE+2);
  pHighestPoint         = High[iHighest(Symbol(),0,MODE_HIGH,VectorPer+1,SIGNALCANDLE+2)];
  pHighestAngle         = MathArctan(MathTan(((pHighStartPoint-pHighestPoint)/(WindowPriceMax()- WindowPriceMin()))/((VectorPer+1-SIGNALCANDLE+2)/WindowBarsPerChart())))*180/3.14;
  pPreviousHighBarAngle = MathArctan(MathTan(((pHighStartPoint-pPreviousBarHigh)/(WindowPriceMax()- WindowPriceMin()))/((VectorPer+1-SIGNALCANDLE+2)/WindowBarsPerChart())))*180/3.14;
  
  LowStartPoint        = iLow(Symbol(),0,VectorPer);
  PreviousBarLow       = iLow(Symbol(),0,SIGNALCANDLE);
  LowestPoint          = Low[iLowest(Symbol(),0,MODE_LOW,VectorPer,SIGNALCANDLE+1)];
  LowestAngle          = MathArctan(MathTan(((LowStartPoint-LowestPoint)/(WindowPriceMax()- WindowPriceMin()))/((VectorPer-SIGNALCANDLE+1)/WindowBarsPerChart())))*180/3.14;
  PreviousLowBarAngle  = MathArctan(MathTan(((LowStartPoint-PreviousBarLow)/(WindowPriceMax()- WindowPriceMin()))/((VectorPer-SIGNALCANDLE+1)/WindowBarsPerChart())))*180/3.14;
 
  pLowStartPoint        = iLow(Symbol(),0,VectorPer+1);
  pPreviousBarLow       = iLow(Symbol(),0,SIGNALCANDLE+2);
  pLowestPoint          = Low[iLowest(Symbol(),0,MODE_LOW,VectorPer,SIGNALCANDLE+2)];
  pLowestAngle          = MathArctan(MathTan(((pLowStartPoint-pLowestPoint)/(WindowPriceMax()- WindowPriceMin()))/((VectorPer+1-SIGNALCANDLE+2)/WindowBarsPerChart())))*180/3.1415;
  pPreviousLowBarAngle  = MathArctan(MathTan(((pLowStartPoint-pPreviousBarLow)/(WindowPriceMax()- WindowPriceMin()))/((VectorPer+1-SIGNALCANDLE+2)/WindowBarsPerChart())))*180/3.1415;

109	kurkafund 2007.05.11 12:56

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How to get the angle of a moving average?