I am struggling to convert the ADX indicator code (by Metaquotes) to work with array data instead of MT4 data centre.
I did successfully converted the feed source so it works OK for drawing buffers (for visual indicator purposes),
but when I try to use the buffer arrays just to pull data from (without drawing vectors), I get no values.
I really can't figure out, why the calculation of adx values are accessable only when i draw the visual vectors.
It must be something I don't realy aware of how MQL works!!!
Maybe any of you can help me out with this issue?
I attach original ADX code + my revision intend to work independntly, no drawing, only supply values through arrays.
Will Appreciate any Help.
REVISED CODE:: INTEND TO SUPPLY ADX VALUES FROM ARRAYS:
I did successfully converted the feed source so it works OK for drawing buffers (for visual indicator purposes),
but when I try to use the buffer arrays just to pull data from (without drawing vectors), I get no values.
I really can't figure out, why the calculation of adx values are accessable only when i draw the visual vectors.
It must be something I don't realy aware of how MQL works!!!
Maybe any of you can help me out with this issue?
I attach original ADX code + my revision intend to work independntly, no drawing, only supply values through arrays.
Will Appreciate any Help.
REVISED CODE:: INTEND TO SUPPLY ADX VALUES FROM ARRAYS:
PHP Code
//+------------------------------------------------------------------+ //| ADX.mq4 | //| Copyright © 2004, MetaQuotes Software Corp. | //| http://www.metaquotes.net/ | //+------------------------------------------------------------------+ #property copyright "Copyright © 2004, MetaQuotes Software Corp." #property link "http://www.metaquotes.net/" //---- input parameters extern int ADXPeriod=14; //---- buffers double a_ADX[]; double PlusDi[]; double MinusDi[]; double PlusSdi[]; double MinusSdi[]; double TempBuf[]; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { return(0); } //+------------------------------------------------------------------+ //| Average Directional Movement Index | //+------------------------------------------------------------------+ int start() { double pdm,mdm,tr; double price_high,price_low; int starti,i,counted_bars=IndicatorCounted(); double tempRates[][6]; ArrayCopyRates(tempRates,"EURUSD",60); Comment(ArraySize(tempRates)+" first bar="+tempRates[ArraySize(tempRates)/6-1][3]); //---- i=ArraySize(tempRates)/6-1-2; PlusSdi[i+1]=0; MinusSdi[i+1]=0; if(counted_bars>=i) i=ArraySize(tempRates)/6-1-counted_bars-1; starti=i; //---- while(i>=0) { price_low=tempRates[i][2]; price_high=tempRates[i][3]; //---- pdm=price_high-tempRates[i+1][3]; mdm=tempRates[i+1][2]-price_low; if(pdm<0) pdm=0; // +DM if(mdm<0) mdm=0; // -DM if(pdm==mdm) { pdm=0; mdm=0; } else if(pdm<mdm) pdm=0; else if(mdm<pdm) mdm=0; //---- ????????? ???????? ???????? double num1=MathAbs(price_high-price_low); double num2=MathAbs(price_high-tempRates[i+1][4]); double num3=MathAbs(price_low-tempRates[i+1][4]); tr=MathMax(num1,num2); tr=MathMax(tr,num3); //---- counting plus/minus direction if(tr==0) { PlusSdi[i]=0; MinusSdi[i]=0; } else { PlusSdi[i]=100.0*pdm/tr; MinusSdi[i]=100.0*mdm/tr; } //---- i--; } //---- last counted bar will be recounted if(counted_bars>0) counted_bars--; int limit=ArraySize(tempRates)/6-1-counted_bars; //---- apply EMA to +DI for(i=0; i<=limit; i++) PlusDi[i]=iMAOnArray(PlusSdi,ArraySize(tempRates)/6-1,ADXPeriod,0,MODE_EMA,i); //---- apply EMA to -DI for(i=0; i<=limit; i++) MinusDi[i]=iMAOnArray(MinusSdi,ArraySize(tempRates)/6-1,ADXPeriod,0,MODE_EMA,i); //---- Directional Movement (DX) i=ArraySize(tempRates)/6-1-2; TempBuf[i+1]=0; i=starti; while(i>=0) { double div=MathAbs(PlusDi[i]+MinusDi[i]); if(div==0.00) TempBuf[i]=0; else TempBuf[i]=100*(MathAbs(PlusDi[i]-MinusDi[i])/div); i--; } //---- ADX is exponential moving average on DX for(i=0; i<limit; i++) { a_ADX[i]=iMAOnArray(TempBuf,ArraySize(tempRates)/6-1,ADXPeriod,0,MODE_EMA,i); } // ******* HELP:: WHY I DONT GET VALUES FOR a_ADX array or any other? ***************** // ******* Why if i would draw buffer line as indicator, it would supply values? ****** Comment("ADX Mian="+a_ADX[0]); return(0); }
Attached File(s)
