Two problems with EA, IsConnected() - (SOLVED) and NormalizeDouble

[GrumpyDuckMan]

Hello everyone,

I have internet connection problems in my area, so I am interested in IsConnected(). I was trying to test this today, but after disconnecting my WiFi and cables from internet and restarting my computer. MetaTrader was telling me it is still connected. Should I add a delay before EA starts again? 

   if(!IsConnected())
     {
      Alert("No connection!");
      return;
     }

I don't understand why all variables aren't debugging at four decimal places. I noticed some are only showing three decimal places, not the four decimal places expected.

void ReadAppliedIndictors(){
double
       StochMain=iStochastic(NULL,TIMEFRAME,SIGNAL,MAIN,Slowing,MODE_SMA,0,MODE_MAIN,0),ValueStochMain=NormalizeDouble((StochMain),4),
       StochSignal=iStochastic(NULL,TIMEFRAME,SIGNAL,MAIN,Slowing,MODE_SMA,0,MODE_SIGNAL,0),ValueStochSignal=NormalizeDouble((StochSignal),4),
       READplus=iADX(NULL,TIMEFRAME,8,PRICE_OPEN,MODE_PLUSDI,0),PlusADX=NormalizeDouble((READplus),4),
       READminus=iADX(NULL,TIMEFRAME,8,PRICE_OPEN,MODE_MINUSDI,0),MinusADX=NormalizeDouble((READminus),4),
       CurrentADX=iADX(NULL,TIMEFRAME,8,PRICE_OPEN,MODE_MAIN,0),ADX=NormalizeDouble((CurrentADX),4),
       CurrentRSI=iRSI(NULL,TIMEFRAME,8,PRICE_OPEN,0),RSIvalue=NormalizeDouble((CurrentRSI),4),
       CurrentiMA=iMA(NULL,TIMEFRAME,8,3,MODE_EMA,PRICE_OPEN,0),IMA=NormalizeDouble((CurrentiMA),4),
       iMoneyFlow=iMFI(NULL,TIMEFRAME,8,0),MoneyFlow=NormalizeDouble((iMoneyFlow),4);}

[Carl Schreiber]

1. IsConnected(): check when the status at the right site of the bottom line changes.
2. Decimals: Try to understand the indicators you request! E.g. iStochastic varies between +100 and 0! 4 decimals simply do not make sense!
   

[William Roeder]

1. Do NOT use NormalizeDouble, EVER. For ANY Reason. It's a kludge, don't use it. It's use is always wrong

   • SL/TP (stops) need to be normalized to tick size (not Point.) (On 5Digit Broker Stops are only allowed to be placed on full pip values. How to find out in mql? - MQL4 and MetaTrader 4 - MQL4 programming forum) and abide by the limits Requirements and Limitations in Making Trades - Appendixes - MQL4 Tutorial and that requires understanding floating point equality Can price != price ? - MQL4 and MetaTrader 4 - MQL4 programming forum
   • Open price for pending orders need to be adjusted. On Currencies, Point == TickSize, so you will get the same answer, but it won't work on Metals. So do it right: Trailing Bar Entry EA - MQL4 and MetaTrader 4 - MQL4 programming forum or Bid/Ask: (No Need) to use NormalizeDouble in OrderSend - MQL4 and MetaTrader 4 - MQL4 programming forum
   • Lot size must also be adjusted to a multiple of LotStep and check against min and max. If that is not a power of 1/10 then NormalizeDouble is wrong. Do it right.

2. GrumpyDuckMan: I don't understand why all variables aren't debugging at four decimal places. I noticed some are only showing three decimal places, not the four decimal places expected.

   If you want to see 4 places, print them out to 4, not normalize them.
   

[GrumpyDuckMan]

Hello again,

I am trying to test the strengths versus weakness of NULL pair.

[GrumpyDuckMan]

Hello everyone,

my first attempt at using DoubletoString. I am not sure this code is written correctly.

//+------------------------------------------------------------------+
int A(){
   double StochMain=iStochastic(NULL,TIMEFRAME,SIGNAL,MAIN,Slowing,MODE_SMA,0,MODE_MAIN,0);
   string sm=DoubleToString(StochMain,0);
   return(SM);}
//+------------------------------------------------------------------+
int B(){
   double StochSignal=iStochastic(NULL,TIMEFRAME,SIGNAL,MAIN,Slowing,MODE_SMA,0,MODE_SIGNAL,0);
   string ss=DoubleToString(StochSignal,0);
   return(SS);}
//+------------------------------------------------------------------+
int C(){
   double READplus=iADX(NULL,TIMEFRAME,8,PRICE_OPEN,MODE_PLUSDI,0);
   string rp=DoubleToString(READplus,0);
   return(RP);}
//+------------------------------------------------------------------+
int D(){   
   double READminus=iADX(NULL,TIMEFRAME,8,PRICE_OPEN,MODE_MINUSDI,0);
   string rm=DoubleToString(READminus,0);
   return(RM);}
//+------------------------------------------------------------------+   
int E(){   
   double CurrentADX=iADX(NULL,TIMEFRAME,8,PRICE_OPEN,MODE_MAIN,0);
   string ca=DoubleToString(CurrentADX,0);
   return(AM);}
//+------------------------------------------------------------------+
int F(){
   double CurrentRSI=iRSI(NULL,TIMEFRAME,8,PRICE_OPEN,0);
   string cr=DoubleToString(CurrentRSI,0);
   return(RSI);}
//+------------------------------------------------------------------+
int G(){
   double CurrentiMA=iMA(NULL,TIMEFRAME,8,3,MODE_EMA,PRICE_OPEN,0);
   string ci=DoubleToString(CurrentiMA,0);
   return (IMA);}
//+------------------------------------------------------------------+
int H(){
   double iMoneyFlow=iMFI(NULL,TIMEFRAME,8,0);
   string mf=DoubleToString(iMoneyFlow,0);
   return(MF);}
//+------------------------------------------------------------------+

[William Roeder]

GrumpyDuckMan: my first attempt at using DoubletoString. I am not sure this code is written correctly.

Your functions are declared to return a int not a string.

[GrumpyDuckMan]

whroeder1:

Your functions are declared to return a int not a string.

I was fairly sure it was incorrectly coded, on the other hand all returns equal closely to values I expected them to be.

I'm experiencing a problem with return values for (RSI) and (IMA). Both of these appear to be returning a true/false indication and not a true value.

[GrumpyDuckMan]

//+------------------------------------------------------------------+
string A(){
   double StochMain=iStochastic(NULL,TIMEFRAME,SIGNAL,MAIN,Slowing,MODE_SMA,0,MODE_MAIN,0);
   SM=DoubleToString(StochMain,0);
   return(SM);}//Main_Stoch_Return
//+------------------------------------------------------------------+
string B(){
   double StochSignal=iStochastic(NULL,TIMEFRAME,SIGNAL,MAIN,Slowing,MODE_SMA,0,MODE_SIGNAL,0);
   SS=DoubleToString(StochSignal,0);
   return(SS);}//Signal_Stoch_Return
//+------------------------------------------------------------------+
string C(){
   double READplus=iADX(NULL,TIMEFRAME,8,PRICE_OPEN,MODE_PLUSDI,0);
   RP=DoubleToString(READplus,0);
   return(RP);}//ADX_Plus_Return
//+------------------------------------------------------------------+
string D(){   
   double READminus=iADX(NULL,TIMEFRAME,8,PRICE_OPEN,MODE_MINUSDI,0);
   RM=DoubleToString(READminus,0);
   return(RM);}//ADX_Minus_Return
//+------------------------------------------------------------------+   
string E(){   
   double CurrentADX=iADX(NULL,TIMEFRAME,8,PRICE_OPEN,MODE_MAIN,0);
   AM=DoubleToString(CurrentADX,0);
   return(AM);}//ADX_adx_Return
//+------------------------------------------------------------------+
string F(){
   double CurrentRSI=iRSI(NULL,TIMEFRAME,8,PRICE_OPEN,0);
   RSI=DoubleToString(CurrentRSI,0);
   return(RSI);}//RSI_Return
//+------------------------------------------------------------------+
string G(){
   double CurrentiMA=iMA(NULL,TIMEFRAME,8,0,MODE_SMMA,PRICE_OPEN,0);
   IMA=DoubleToString(CurrentiMA,0);
   return (IMA);}//MA_Return
//+------------------------------------------------------------------+
string H(){
   double iMoneyFlow=iMFI(NULL,TIMEFRAME,8,0);
   MF=DoubleToString(iMoneyFlow,0);
   return(MF);
   }//Money_flow_Return
//+------------------------------------------------------------------+