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/////////////////////////////////////////////////////////////////
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//
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// SaherElm IT Center Volume Indicator
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// -------------------------------------------------------------
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// this indicator provides Volume ...
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//
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// Maintainer:
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// ------------
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// Hadi Khazaee Asl (hadi_khazaee_asl@yahoo.com)
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//
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////////////////////////////////////////////////////////////////
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//
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// Global Properties ...
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#property copyright "Copyright 2023, SaherElm IT Center"
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#property link "https://saherelm.ir"
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#property version "1.00"
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#property description "SaherElm Volume Indicator"
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#property strict
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//
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// START Inputs ...
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//
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input int length = 11; // Length
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//
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// END Inputs ...
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//
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//
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// START Global Definitions: Variables, Properties and etc ...
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//
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//
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// Includes our shared library ...
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#include "../Libraries/x-saherelm.lib.mq4"
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//
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#property indicator_separate_window
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//
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// we have 2 buffer in this indicator ...
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#property indicator_buffers 3
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//
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// also we have 2 line for draw on this indicator ...
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#property indicator_plots 3
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//
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// Buy Volume ...
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#property indicator_width1 1
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#property indicator_color1 clrGreen
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#property indicator_type1 DRAW_HISTOGRAM
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#property indicator_style1 STYLE_DOT
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//
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// Sell Volume ...
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#property indicator_width2 1
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#property indicator_type2 DRAW_LINE
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#property indicator_color2 clrRed
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#property indicator_style2 STYLE_DOT
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//
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// Diff ...
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#property indicator_width3 1
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#property indicator_type3 DRAW_HISTOGRAM
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#property indicator_color3 clrYellow
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#property indicator_style3 STYLE_SOLID
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//
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//#property indicator_minimum 0
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//#property indicator_maximum 1
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//
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// set color of horizontal levels ...
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#property indicator_levelcolor clrGray
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//
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// set style of horizontal levels ...
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#property indicator_levelstyle STYLE_DOT
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//
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// Declare Buffers ...
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#define buyVolumeBufferIndex 0
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#define sellVolumeBufferIndex 1
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#define diffBufferIndex 2
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//
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double buyVolumeBuffer[];
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double sellVolumeBuffer[];
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double diffBuffer[];
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//
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// here we specify logging enabled or not ...
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bool enableLogging = true;
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//
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// this is a Tag which attached to our Logger ...
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string logTag = "XS_VOLUME";
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//
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// END Global Definitions: Variables, Properties and etc ...
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//
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//
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// Start Event Handlers ...
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//
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//
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// Initialization ...
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int OnInit() {
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//
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// Initialize what we want ...
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//
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// Validating Input Parameters ...
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if (length < 0) {
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return INIT_PARAMETERS_INCORRECT;
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}
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//
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// set descriptions of horizontal levels ...
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SetLevelValue(0, 0.0);
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IndicatorSetString(INDICATOR_LEVELTEXT,0,"");
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//
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// Buy Volume Buffer ...
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SetIndexBuffer(buyVolumeBufferIndex, buyVolumeBuffer);
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SetIndexLabel(buyVolumeBufferIndex, "Buy Volume");
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//
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// Sell Volume Buffer ...
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SetIndexBuffer(sellVolumeBufferIndex, sellVolumeBuffer);
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SetIndexLabel(sellVolumeBufferIndex, "Sell Volume");
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//
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// Diff Buffer ...
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SetIndexBuffer(diffBufferIndex, diffBuffer);
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SetIndexLabel(diffBufferIndex, "Diff");
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//
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return(INIT_SUCCEEDED);
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}
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//
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// Do Calculation ...
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int OnCalculate(
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const int rates_total,
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const int prev_calculated,
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const datetime &time[],
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const double &open[],
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const double &high[],
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const double &low[],
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const double &close[],
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const long &tick_volume[],
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const long &volume[],
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const int &spread[]
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) {
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//
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// this counts Available Bars ...
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int limit;
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//
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// because in some cases we may have more than one input for
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// calculation and we must prevent any calculation
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// untill we pass the biggest input length, here we get max Input length
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// and then wait until pass it ...
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int maxLength = MathMax(0, length);
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//
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// input variable, we return 0 means nothing passed ...
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if (rates_total < maxLength) {
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return 0;
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}
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//
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// found which candles calculated before ...
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limit = (prev_calculated == 0) ? rates_total - maxLength - 1 : rates_total - prev_calculated + 1;
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//
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// this is the main loop of calculations, for each bar index ...
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for (int i = limit - 1; i >= 0; i--) {
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//
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// Start Calculation here ...
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// i is bar_index ...
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//
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CalculateBuffers(
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open,
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close,
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high,
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low,
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i
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);
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}
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//
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return rates_total;
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}
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//
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// De Initialization ...
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void OnDeinit(const int reason) {
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}
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//
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// END Event Handlers ...
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//
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//
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// START Functions ...
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//
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//
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void CalculateBuffers(
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const double &open[],
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const double &close[],
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const double &high[],
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const double &low[],
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const int &bar_index
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) {
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//
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long volume = iVolume(
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_Symbol,
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_Period,
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bar_index
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);
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//
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double buyVolume = 0.0;
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double sellVolume = 0.0;
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//
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// Up ...
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if (close[bar_index] > open[bar_index]) {
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//
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double cuenta = (high[bar_index] - low[bar_index]) * 10000;
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double cuenta1 = volume - cuenta;
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//
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buyVolume = ((volume - cuenta) / 2) + cuenta;
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//
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buyVolumeBuffer[bar_index] = buyVolume;
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sellVolumeBuffer[bar_index] = volume - buyVolume;
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} else
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//
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// Down ...
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if (close[bar_index] < open[bar_index]) {
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//
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double cuenta1 = (high[bar_index] - low[bar_index]) * 10000;
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double cuenta = volume - cuenta1;
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//
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sellVolume = ((volume - cuenta1) / 2) + cuenta1;
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//
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sellVolumeBuffer[bar_index] = sellVolume;
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buyVolumeBuffer[bar_index] = volume - sellVolume;
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} else
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//
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// Neutral ...
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if (close[bar_index] == open[bar_index]) {
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//
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double cuenta = (volume / 2) * 1.0;
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//
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sellVolumeBuffer[bar_index] = cuenta;
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buyVolumeBuffer[bar_index] = volume - cuenta;
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}
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//
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diffBuffer[bar_index] = MathAbs(buyVolumeBuffer[bar_index]) - MathAbs(sellVolumeBuffer[bar_index]);
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}
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//
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// END Functions ...
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//
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