294 lines
6.0 KiB
Plaintext
294 lines
6.0 KiB
Plaintext
///////////////////////////////////////////////////////
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//
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// SaherElm IT Center XRange Indicator
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// ---------------------------------------------
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// saherelm implementation of above indicator ...
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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 XRange 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 marketLength = 14;
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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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#property indicator_chart_window
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//
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#property indicator_buffers 3
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//
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#property indicator_plots 3
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//
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// Start Define Indicator Buffer Styles ...
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//
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//
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// Highest High Buffer ...
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#property indicator_type1 DRAW_LINE
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#property indicator_color1 clrGreen
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#property indicator_style1 STYLE_DOT
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#property indicator_width1 1
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//
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// Lowest Low Buffer ...
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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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#property indicator_width2 1
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//
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// Middle Buffer ...
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#property indicator_type3 DRAW_LINE
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#property indicator_color3 clrYellow
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#property indicator_style3 STYLE_DASH
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#property indicator_width3 1
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//
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// End Define Indicator Buffer Styles ...
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//
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//
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// Buffers ...
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//
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#define highestHighBufferIndex 0
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#define lowestLowBufferIndex 1
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#define middleBufferIndex 2
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//
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double highestHighBuffer[];
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double lowestLowBuffer[];
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double middleBuffer[];
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//
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datetime startTime;
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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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if (
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marketLength <= 0
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) {
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return INIT_PARAMETERS_INCORRECT;
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}
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//
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string hhLbl = StringConcatenate(
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"XR HH(", marketLength, ")"
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);
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SetIndexBuffer(highestHighBufferIndex, highestHighBuffer);
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SetIndexLabel(highestHighBufferIndex, hhLbl);
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//
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string llLbl = StringConcatenate(
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"XR LL(", marketLength, ")"
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);
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SetIndexBuffer(lowestLowBufferIndex, lowestLowBuffer);
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SetIndexLabel(lowestLowBufferIndex, llLbl);
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//
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string midLbl = StringConcatenate(
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"XR Mid(", marketLength, ")"
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);
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SetIndexBuffer(middleBufferIndex, middleBuffer);
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SetIndexLabel(middleBufferIndex, midLbl);
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//
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return INIT_SUCCEEDED;
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}
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//
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// Calculating what we want ...
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int OnCalculate(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, marketLength);
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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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// Calculations ...
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CalculateBuffers(i);
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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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// 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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// Calculations ...
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void CalculateBuffers(
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const int &bar_index
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) {
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//
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// Retrieve Bar Time ...
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datetime barTime = iTime(
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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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if (startTime == 0) {
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//
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startTime = barTime;
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SetIndicatorBuffersNone(bar_index);
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return;
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}
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//
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int startBarIndex = iBarShift(
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_Symbol,
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_Period,
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startTime
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);
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//
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int startDistance = startBarIndex - bar_index;
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if (startDistance < marketLength) {
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//
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SetIndicatorBuffersNone(bar_index);
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return;
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}
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//
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// Highest High ...
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int hhIdx = iHighest(
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_Symbol,
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_Period,
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MODE_HIGH,
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marketLength,
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bar_index
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);
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double hh = iHigh(
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_Symbol,
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_Period,
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hhIdx
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);
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highestHighBuffer[bar_index] = hh;
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//
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// Lowest Low ...
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int llIdx = iLowest(
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_Symbol,
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_Period,
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MODE_LOW,
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marketLength,
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bar_index
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);
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double ll = iLow(
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_Symbol,
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_Period,
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llIdx
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);
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lowestLowBuffer[bar_index] = ll;
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//
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// Middle Buffer ...
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double mid = (hh + ll) / 2;
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middleBuffer[bar_index] = mid;
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//
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// Reset Start Time ...
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startTime = 0;
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}
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//
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void SetIndicatorBuffersNone(
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const int bar_index
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) {
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//
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int lastBarIndex = bar_index + 1;
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//
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double lastHighestHigh;
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double lastLowestLow;
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//
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// Highest High ...
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if (ArraySize(highestHighBuffer) > lastBarIndex) {
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lastHighestHigh = highestHighBuffer[lastBarIndex];
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} else {
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lastHighestHigh = 0;
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}
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//
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// Lowest Low ...
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if (ArraySize(lowestLowBuffer) > lastBarIndex) {
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lastLowestLow = lowestLowBuffer[lastBarIndex];
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} else {
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lastLowestLow = 0;
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}
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//
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highestHighBuffer[bar_index] = lastHighestHigh;
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lowestLowBuffer[bar_index] = lastLowestLow;
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//
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double mid = (lastHighestHigh + lastLowestLow) / 2;
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middleBuffer[bar_index] = mid;
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}
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//
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// END Functions ...
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// |