forked from airat77786/MQL5Book
75 lines
3.8 KiB
MQL5
75 lines
3.8 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| SeriesCopy.mq5 |
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//| Copyright 2021, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#include "..\..\Include\PRTF.mqh"
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// The macro provides more convenient datetime output without seconds
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#define ArrayPrintM(A) \
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ArrayPrint(A, _Digits, NULL, 0, -1, \
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ARRAYPRINT_INDEX | ARRAYPRINT_DATE | ARRAYPRINT_MINUTES)
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//+------------------------------------------------------------------+
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//| Script program start function |
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//+------------------------------------------------------------------+
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void OnStart()
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{
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// Define the array to receive requested data
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datetime times[];
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Print(""); // separator line
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// Request 10 bars from 5-th of September and earlier
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// because it's Sunday, we'll get bars for Friday
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PRTF(CopyTime("EURUSD", PERIOD_H1, D'2021.09.05', 10, times));
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ArrayPrintM(times);
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PRTF(ArraySetAsSeries(times, true)); // switch to timeseries order
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ArrayPrintM(times);
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PRTF(ArraySetAsSeries(times, false)); // restore default ordering mode
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// Request some bars (we can't be sure that all H1 bars exist in the range)
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// between 2 timestamps, and do it in 2 ways:
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// first - from future to past, second - from past to future
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// both results will be the same FROM TO
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PRTF(CopyTime("EURUSD", PERIOD_H1, D'2021.09.06 03:00', D'2021.09.05 03:00', times));
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ArrayPrintM(times); // FROM TO
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PRTF(CopyTime("EURUSD", PERIOD_H1, D'2021.09.05 03:00', D'2021.09.06 03:00', times));
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ArrayPrintM(times);
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// Change direction of indexing
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PRTF(ArraySetAsSeries(times, true));
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ArrayPrintM(times);
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// Despite the fact that 2 timestamps define 24-hour range,
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// the function will return 4 bars, not 25 (25 is expected because FROM/TO are both included)
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// This is because 5-th of September is Sunday,
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// so only early morning of September 6-th is counted
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// Also note that the array was shrinked to 4 elements from 10
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// Request 10 bars from 100-th bar
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PRTF(CopyTime("EURUSD", PERIOD_H1, 100, 10, times));
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// Remember the array is still in timeseries mode
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ArrayPrintM(times);
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}
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//+------------------------------------------------------------------+
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/*
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example output
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CopyTime(EURUSD,PERIOD_H1,D'2021.09.05',10,times)=10 / ok
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[0] 2021.09.03 14:00 2021.09.03 15:00 2021.09.03 16:00 2021.09.03 17:00 2021.09.03 18:00
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[5] 2021.09.03 19:00 2021.09.03 20:00 2021.09.03 21:00 2021.09.03 22:00 2021.09.03 23:00
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ArraySetAsSeries(times,true)=true / ok
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[0] 2021.09.03 23:00 2021.09.03 22:00 2021.09.03 21:00 2021.09.03 20:00 2021.09.03 19:00
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[5] 2021.09.03 18:00 2021.09.03 17:00 2021.09.03 16:00 2021.09.03 15:00 2021.09.03 14:00
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ArraySetAsSeries(times,false)=true / ok
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CopyTime(EURUSD,PERIOD_H1,D'2021.09.06 03:00',D'2021.09.05 03:00',times)=4 / ok
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2021.09.06 00:00 2021.09.06 01:00 2021.09.06 02:00 2021.09.06 03:00
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CopyTime(EURUSD,PERIOD_H1,D'2021.09.05 03:00',D'2021.09.06 03:00',times)=4 / ok
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2021.09.06 00:00 2021.09.06 01:00 2021.09.06 02:00 2021.09.06 03:00
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ArraySetAsSeries(times,true)=true / ok
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2021.09.06 03:00 2021.09.06 02:00 2021.09.06 01:00 2021.09.06 00:00
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CopyTime(EURUSD,PERIOD_H1,100,10,times)=10 / ok
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[0] 2021.10.04 19:00 2021.10.04 18:00 2021.10.04 17:00 2021.10.04 16:00 2021.10.04 15:00
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[5] 2021.10.04 14:00 2021.10.04 13:00 2021.10.04 12:00 2021.10.04 11:00 2021.10.04 10:00
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*/
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//+------------------------------------------------------------------+
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