//+------------------------------------------------------------------+
//| Price and Volume Trend.mq4 |
//| Copyright © 2007, MetaQuotes Software Corp. |
//| http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2007, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net/"
//----
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 DodgerBlue
//---- input parameters
extern int ExtPVTAppliedPrice = 0;
//---- buffers
double ExtPVTBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
string sShortName;
//---- indicator buffer mapping
SetIndexBuffer(0, ExtPVTBuffer);
//---- indicator line
SetIndexStyle(0, DRAW_LINE);
//---- sets default precision format for indicators visualization
IndicatorDigits(0);
//---- name for DataWindow and indicator subwindow label
sShortName="PVT";
IndicatorShortName(sShortName);
//----
return(0);
}
//+------------------------------------------------------------------+
//| On Balance Volume |
//+------------------------------------------------------------------+
int start()
{
int i, nLimit, nCountedBars;
double dCurrentPrice, dPreviousPrice;
//---- bars count that does not changed after last indicator launch.
nCountedBars = IndicatorCounted();
//---- last counted bar will be recounted
if(nCountedBars > 0)
nCountedBars--;
nLimit = Bars - nCountedBars - 1;
//----
for(i = nLimit; i >= 0; i--)
{
if(i == Bars - 1)
ExtPVTBuffer[i] = Volume[i];
else
{
dCurrentPrice = GetAppliedPrice(ExtPVTAppliedPrice, i);
dPreviousPrice = GetAppliedPrice(ExtPVTAppliedPrice, i + 1);
ExtPVTBuffer[i] = ExtPVTBuffer[i+1] + Volume[i]*(dCurrentPrice -
dPreviousPrice) / dPreviousPrice;
}
}
//----
return(0);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
double GetAppliedPrice(int nAppliedPrice, int nIndex)
{
double dPrice;
//----
switch(nAppliedPrice)
{
case 0: dPrice=Close[nIndex]; break;
case 1: dPrice=Open[nIndex]; break;
case 2: dPrice=High[nIndex]; break;
case 3: dPrice=Low[nIndex]; break;
case 4: dPrice=(High[nIndex] + Low[nIndex]) / 2.0; break;
case 5: dPrice=(High[nIndex] + Low[nIndex] + Close[nIndex]) / 3.0; break;
case 6: dPrice=(High[nIndex] + Low[nIndex] + 2*Close[nIndex]) / 4.0; break;
default: dPrice = 0.0;
}
//----
return(dPrice);
}
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Series array that contains tick volumes of each bar
Series array that contains close prices for each bar
Series array that contains open prices of each bar
Series array that contains the highest prices of each bar
Series array that contains the lowest prices of each bar
Indicator Curves created:
Implements a curve of type DRAW_LINE
Indicators Used:
Custom Indicators Used:
Order Management characteristics:
Other Features: