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Building a MetaTrader Indicator for Economic News Calendars

Article MQL5 articles
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Summary

The article explains how to build an MT4 indicator that downloads a weekly economic calendar, reads its CSV entries, and marks each event on a price chart with a vertical line and headline. It describes using an external download utility, converting calendar dates and times using GMT functions, assigning colors by event importance, and refreshing the display every 15 minutes.

The method offers a practical way to view past and upcoming releases alongside price data, but it depends on external software, DLL access, and a particular file location and calendar format. The author warns that the CSV can report some events from midnight to 1 a.m. GMT twelve hours later than the calendar webpage. The article provides implementation details rather than evidence of trading performance; displaying events does not establish that the marks generate profitable signals.

Key ideas

  • The indicator downloads a calendar CSV and parses its event date, time, currency, description, and importance.
  • It represents each event with a colored vertical line and a rotated headline on the chart.
  • Calendar timestamps are converted using GMT-related functions and the current week’s start date.
  • The implementation refreshes the file and redraws the events every 15 minutes.
  • The CSV may contain a twelve-hour time discrepancy for some events released shortly after midnight GMT.

Tags

Event-drivenForexExecution

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.