Historical Data Loader for Multi-Currency Expert Advisors
Info
The Historical Data Loader for Multi-Currency Expert Advisors is a Library for MetaTrader 5 that this functional module allows the uploading of historical data based on requests from multi-currency expert advisors. When only one chart is open in a client terminal with a functioning multi-currency Expert Advisor, historical data is typically limited to that single chart.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 5 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL5/Libraries folder via File ? Open Data Folder in MetaTrader 5.
How to Install and Use Historical Data Loader for Multi-Currency Expert Advisors
1. Storage: Place library files in the MQL/Libraries directory to ensure they are accessible to your projects.
2. Implementation: Include the library in your code using the #import directive, ensuring you match the exact function names and parameters.
3. Compilation: Ensure the library is present in the directory before you compile your main EA or script, as the compiler links them during this phase.
4. Management: Keep libraries organized in sub-folders if you manage many custom functions to maintain a clean project structure.
Frequently Asked Questions
Q: What is a library file used for? A: Libraries store reusable code modules, allowing you to centralize common logic used by multiple EAs or indicators.
Q: Is a library executable? A: No, libraries are non-executable files containing functions; they must be imported into an EA, indicator, or script to function.
Q: Can I update a library while the platform is running? A: You should compile your EA or script after updating a library to ensure the latest code changes are integrated.
What this tool does
This functional module allows the uploading of historical data based on requests from multi-currency Expert Advisors.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 5.
Compatible Platform & Setup
This Library works on MetaTrader 5. Place the file in the MQL5/Libraries folder and restart the terminal.
Description & Settings
Related: cdownloadhistory class: historical data download utility - another powerful library for MetaTrader 5 traders.
This functional module allows the uploading of historical data based on requests from multi-currency Expert Advisors. When only one chart is open in a client terminal with a functioning multi-currency Expert Advisor, historical data is typically limited to that single chart. This module is designed to address this limitation.Also recommended: Moving Average Calculation on Array Data - similar library with strong performance on MetaTrader 5.
To use the module:
- Place the historyloader.mqh file into the terminal_data_folder\mql5\include directory.
- Add the command to include this file at the global level in your Expert Advisor's code:
#include
- Make the necessary loadHistory() function calls before the main Expert Advisor code within the function body.
You may also like: Momentum Calculation on Data Arrays - excellent alternative for library users on MetaTrader 5.
Source Code
int checkloadhistory(string symbol,enum_timeframes period,datetime start_date)
{
datetime first_date=0;
datetime times[100];
if(symbol == null || symbol == "") symbol = symbol();
if(period == period_current) period = period();
if(!symbolinfointeger(symbol,symbol_select))
{
if(getlasterror()==err_market_unknown_symbol) return(-1);
if(!symbolselect(symbol,true)) print(__function__,"(): ",symbol," marketwatch!!!");.......
⚠ Limitations & Risk Warning
- This tool is provided for educational and testing purposes only.
- Past performance does not guarantee future results.
- Trading involves substantial risk of loss. Use on a demo account first.
- Results may vary depending on market conditions, broker, and settings.
- We recommend thorough backtesting and forward testing before using with real funds.