Dema Lines

[chua le]

Hi,

I tried to plot three lines, Dema 4 (period =4), Dema 12 (period=12), Wma150 (weighted ,period=150) butit only plot the weighted moving avrage with period 150.

Kindly

//+------------------------------------------------------------------+
//|                       DEMA_RLH                                   |
//|             Copyright © 2006, Robert Hill                        |                                          
//|                http://www.metaquotes.net/                        |
//|                    (With Alterations)                            |
  |               Link to original code:                        |
  |   https://forex-indicators.net/files/indicators/mt4/DEMA_RLH.mq4 |
//| Based on the formula developed by Patrick Mulloy                 |
//|                                                                  |
//| It can be used in place of EMA or to smooth other indicators.    |
//|                                                                  |
//| DEMA = 2 * EMA - EMA of EMA                                      |
//|                                                                  |
//| SkyBlue is DEMA4, White is DEMA12, Yellow is WMA150                 |
//|                                                                  |
//+------------------------------------------------------------------+
#property  link      "http://www.metaquotes.net/"
//---- indicator settings
#property  indicator_chart_window
#property  indicator_buffers 3
#property  indicator_color1  SkyBlue
#property  indicator_color2  White
#property  indicator_color3  Yellow
#property  indicator_width1  2
#property  indicator_width2  2
#property  indicator_width3  2
//----
extern int EMA_Period4=4;
extern int EMA_Period12=12;
extern int WMA_Period150=150;


//---- buffers
double Dema4[];
double Dema12[];
double Ema4[];
double Ema12[];
double EmaOfEma4[];
double EmaOfEma12[];
double Wma150[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- drawing settings
   SetIndexStyle(0,DRAW_LINE);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexStyle(2,DRAW_LINE);
 //---
   SetIndexDrawBegin(0,EMA_Period4);
   IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+2);
//---- 3 indicator buffers mapping
   SetIndexBuffer(0,Dema4);
   SetIndexBuffer(1,Dema12);
   SetIndexBuffer(2,Wma150);
//---- name for DataWindow and indicator subwindow label
   IndicatorShortName("DEMA("+EMA_Period4+")");
//---- initialization done
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int start()
  {
   int i;
   int counted_bars = IndicatorCounted();
   if(counted_bars < 0)  return(-1);
   if(counted_bars > 0)   counted_bars--;
   int limit4 = Bars - counted_bars;
   int limit12 = Bars - counted_bars;
   int limit150 = Bars - counted_bars;
   
   if(counted_bars==0) limit4-=1+EMA_Period4;
   if(counted_bars==0) limit12-=1+EMA_Period12;
   if(counted_bars==0) limit150-=1+WMA_Period150;
   
   
//----
   for(i=limit4; i>=0; i--) Ema4[i]=iMA(NULL,0,EMA_Period4,0,MODE_EMA,PRICE_CLOSE,i);
   for(i=limit4; i >=0; i--) EmaOfEma4[i]=iMAOnArray(Ema4,0,EMA_Period4,0,MODE_EMA,i);              
   for(i=limit4; i >=0; i--) Dema4[i]=2 * Ema4[i] - EmaOfEma4[i];
      
   for(i=limit12; i>=0; i--) Ema12[i]=iMA(NULL,0,EMA_Period12,0,MODE_EMA,PRICE_CLOSE,i);
   for(i=limit12; i >=0; i--) EmaOfEma12[i]=iMAOnArray(Ema12,0,EMA_Period12,0,MODE_EMA,i);              
   for(i=limit12; i >=0; i--) Dema12[i]=2 * Ema12[i] - EmaOfEma12[i];
   
  for(i=limit150; i>=0; i--) Wma150[i]=iMA(NULL,0,WMA_Period150,0,MODE_LWMA,PRICE_CLOSE,i);   
            
   return(0);
  }
//+------------------------------------------------------------------+
//-----------+

help.

[Shino Unada]

chua le:

Hi,

I tried to plot three lines, Dema 4 (period =4), Dema 12 (period=12), Wma150 (weighted ,period=150) butit only plot the weighted moving avrage with period 150.

Kindly

help.

It has only three buffers.

[chua le]

oh, thank you , idontquite understand, how many buffers i require?

[chua le]

Is it correct I only need 3 buffers since I only draw 3 lines, Dema4, Dema12 and Wma150?

[Shino Unada]

No, you also have to prepare buffers for EMA4, EMA12, EmaOfEma4, and EmaOfEma12.

[lippmaje]

chua le:
Is it correct I only need 3 buffers since I only draw 3 lines, Dema4, Dema12 and Wma150?

You have already put your initials on top of this source code, of which you are not the author. And now you come here to have us fix it for you. Is this correct?

[chua le]

Naguisa Unada:
No, you also have to prepare buffers for EMA4, EMA12, EmaOfEma4, and EmaOfEma12.

i see thank you

[chua le]

lippmaje:
You have already put your initials on top of this source code, of which you are not the author. And now you come here to have us fix it for you. Is this correct?

It is altered from the original code, so what shall i do? 

[lippmaje]

chua le:

It is altered from the original code, so what shall i do? 

First of all by adding this:

#property  copyright "Copyright © 2006, Robert Hill "

and then add some remark that it's modified/enhanced by you.

Link to original code:

https://forex-indicators.net/files/indicators/mt4/DEMA_RLH.mq4

[chua le]

ok thanks

[chua le]

Hi,

I added buffers and all the 7 lines (Dema4,  Dema12, Wma150,  Ema4, Ema12, EmaOfEma4, EmaOfEma12 ) are displayed, Ema4, Ema12, EmaOfEma4, EmaOfEma12 in black colors.  I only need to display Dema4, Dema12 and Wma150, how to hide Ema4, Ema12, EmaOfEma4, EmaOfEma12 ?

Regards