Tick Compressor
Info
The Tick Compressor is a Script for MetaTrader 5 that in mql ticks are stored in a special structure - mqltick. It's universal but a bit fat.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Script works exclusively on MetaTrader 5 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL5/Scripts folder via File ? Open Data Folder in MetaTrader 5.
How to Install and Use Tick Compressor
1. Installation: Move your script file into the MQL/Scripts directory and restart the platform.
2. Execution: Drag the script onto a chart; it will perform a one-time action, such as closing all open orders or clearing chart objects.
3. Editing: Use MetaEditor (F4) to modify code, click "Compile," and verify no errors appear in the terminal before running.
4. Removing: Scripts stop automatically, but you can remove them manually by right-clicking the chart and choosing "Remove Script."
Frequently Asked Questions
Q: How are scripts different from EAs? A: Scripts execute a single action and then stop; EAs monitor the market and trade continuously.
Q: Can I assign a hotkey to a script? A: Yes, right-click the script in the Navigator, select "Set Hotkey," and define your preferred keyboard shortcut.
Q: Why did my script stop? A: Scripts are designed to stop immediately after finishing their programmed command; this is normal behavior.
What this tool does
In MQL ticks are stored in a special structure - MqlTick.
Typical Use Case
This Script excels in automated trading and technical analysis on MetaTrader 5.
Compatible Platform & Setup
This Script works on MetaTrader 5. Place the file in the MQL5/Scripts folder and restart the terminal.
Description & Settings
Related: Third Party Ticks - another powerful script for MetaTrader 5 traders.
In MQL ticks are stored in a special structure - MqlTick. It's universal but a bit fat. If your algorithm handles large tick arrays it may become a reason of RAM shortage. The class TickCompressor provides a simple solution to minimize memory utilization.
Also recommended: Rates Compressor - similar script with strong performance on MetaTrader 5.
Let us compare the standard MqlTick and the mini-tick structures.The `time` field is excessive because it duplicates `time_msc` with lesser accuracy.
The price fields do not have to be doubles in fact. The type float is sufficient medium for most of symbols. When it comes to price calculations, then indeed double is a must, but as long as it's a matter of passive storage, float can do the job.
Also for symbols of centralized markets (not exchanges) the `last` price is always 0. In addition, `volume` and `volume_real` are also unused.
Finally, the `flags` field can easily fit into ushort.
As a result, MqlTickBidAsk for Forex and CFDs looks quite minified.
MqlTickBidAskLastVolume is more verbose but still compact.
Actually, in both cases we could use `ushort spread` instead of `float ask` and build `ask` from `bid`, but it's left as an option.
The test script outputs original and minified ticks to the log.
For GBPUSD it uses MqlTickBidAsk, and for S&P 500 mini futures - MqlTickBidAskLastVolume.
As you can see, MqlTickBidAsk is 3 times smaller than MqlTick, and MqlTickBidAskLastVolume is 2 times smaller.
One of the areas where the tick compressor can be helpful is virtual testing and optimization using tick arrays. For example, the library provides a method for virtual trading:
where the Ticks array should be provided in-memory by calling code.
If a strategy to be tested on a deep history (several years), the tick array can easily grow up to many Gbs and exceed physical RAM. In such cases one can store minified array (compressed ticks) and then patch the Virtual library to consume mini-ticks via decompression keeping all the internal logic intact (in the same way as with standard ticks).
Also the tick compressor can be used to store tick arrays in files in a more compact way.
You may also like: Tick Speed Indicator - excellent alternative for script users on MetaTrader 5.
⚠ 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.