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What is magic number in expert advisor

The Use of ORDER_MAGIC for Trading with Different Expert Advisors on a Single Instrument,Magic number factoids

All our expert advisors are capable of using magic numbers for assigning to orders, for filtering orders, or for both. Conclusion A magic number is an order parameter that helps MetaTrader 05/01/ · The magic number is a MetaTrader concept used to track the open positions of an expert advisor. The concept allows the EA to distinguish the trades that it opened versus 20/03/ · Setting every Expert advisor to emply an unique magic number disallows the robots from interfering with the others. Magic number factoids. The magic number of a manually 24/07/ · The assisting expert must modify only those positions having MagicNumber equal to 0. All three examples are quite realistic, and the users could probably have set such problems 20/07/ · I propose to prescribe in the code of the Magic number, not only the ID of the Expert Advisor, but also the instrument, on which it is running. The fact that the Expert ... read more

Next follow two similar functions, which are in their essence switches switch , and differ only in the type of the output values:. Functions return the portion of the Magic, which specifies the parameter of type Emagic, with the first one giving the result in the form of ulong , which is used in calculations, and the second one giving the results of type string , which can be used for visualization.

Each branch case calls up a table function, which transfers the value of the structure into a visual form. Thus, if the value mag. If it is easier to write a table of states, then there is no need to complicate matters. But if the writing of the table will take up a lot of time, then, obviously, the preference should be given to the procedural methods. I am not providing the tables in order to save up space they can be found in the attached files. Basically this is it, our class is developed, however, there are still the four remaining functions that we used in the development of the previous Expert Advisor.

I simply redeclared them in a new class, especially considering that they needed to be slightly modified. not only is declared as a method of class Cmagic but also has a different set of parameters. Instead of the Magic, it now gets the identification by the field of the Magic, which the position was calculated. Besides, even though the symbol was present in the last option, it was only used for obtaining information about the step of the lot by the symbol. And now it is prescribed in the filter, and can participate, on an equal with others basis, in the filtration of position counting.

What does this give us? Now we can simultaneously filter the transactions, which were open on a different instrument, but by the same Expert Advisor. In doing so they will not be confused with other, similar Expert Advisors, running on a different instrument. To be honest, it is very difficult to describe all of the different ways of using this new system of calculations.

And the reader can personally decide what he needs such a complicated system for. I only strongly advise you not to complicate instances, where you can write simply, and not to fear such complications when there is an obvious need for it.

Well, since the class has been designed, it is time to test it on a new Expert Advisor:. As mentioned earlier, this Expert Advisor is extremely simple and was created only to demonstrate the different capabilities, run it three times on a single instrument:. Figure 6. Installation of three Expert Advisors, with different magics on different graphs.

Figure 7. The result is conflict-free trading of three Expert Advisors with different magics. As can be seen from the printouts of the Expert Advisors' messages, all three participants were launched successfully and demonstrated no conflicts. By providing the opportunity to assign magical orders to trading operations, the creators of MQL5, have greatly facilitated the life of Expert Advisor writers. But developers can only provide you with instruments - you need to be the one to actually obtain the diamonds.

Translated from Russian by MetaQuotes Software Corp. I have to try something similar to your code here to discriminate operations and positions of different EAs.

I have several doubts. Is this code optimized? I think this code could really slow down the computer if you have a long history of trades and several eas running this code -alghough I haven't yet proved it, that's only what I think. Wouldn't it be better for performance if we stored only the last DEAL IN not yet filled by a DEAL OUT? Maybe I haven't understood really what the code does. If the volume of the SELLs is higher than the volume of BUYs, then we have a general SELL position, and a BUY position if the volume of the BUYs is higher than that of the SELLs.

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Do you like the article? Share it with others — post a link to it! Use new possibilities of MetaTrader 5. Similar articles DoEasy. Controls Part 8 : Base WinForms objects by categories, GroupBox and CheckBox controls Complex indicators made easy using objects Developing a trading Expert Advisor from scratch Part 17 : Accessing data on the web III DoEasy.

Controls Part 7 : Text label control DoEasy. Controls Part 6 : Panel control, auto resizing the container to fit inner content. Русский 中文 Español Deutsch 日本語 Português 한국어 Français Italiano Türkçe. to pocket. MetaTrader 5 — Examples. Nikolay Demko. Introduction In MQL5 we have a capability to assign a magic number to each pending order, in order to use this information to identify the order. Properties of data types long and ulong but the type ulong outdid him by combining the positive and negative mantissa.

What does Wikipidia say about the word code : The Code - rule algorithm , the comparison for each individual message of a strictly particular combination of symbols characters or signals. The possibility of two or more Expert Advisors to work on a single instrument and not interfere. The possibility of two or more Expert Advisors to work on different instruments and complement each other. The ability to identify the order by the instrument, working with the Expert Advisor.

Attached files Download ZIP. mq5 8. mq5 Warning: All rights to these materials are reserved by MetaQuotes Ltd. Copying or reprinting of these materials in whole or in part is prohibited. Last comments Go to discussion 1. Joaquin Poudereux. Processing of trade events in Expert Advisor using the OnTrade function MQL5 gave a mass of innovations, including work with events of various types timer events, trade events, custom events, etc.

Ability to handle events allows you to create completely new type of programs for automatic and semi-automatic trading. In this article we will consider trade events and write some code for the OnTrade function, that will process the Trade event. A Library for Constructing a Chart via Google Chart API The construction of various types of diagrams is an essential part of the analyses of the market situation and the testing of a trading system. Frequently, in order to construct a nice looking diagram, it is necessary to organize the data output into a file, after which it is used in applications such as MS Excel.

This is not very convenient and deprives us of the ability to dynamically update the data. Google Charts API provided the means for creating charts in online modes, by sending a special request to the server. In this article we attempt to automate the process of creating such a request and obtaining a chart from the Google server.

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Advertisements: EXNESS: low spreads - just excellent! Please disable AdBlock or whitelist EarnForex. Thank you! EarnForex Education Guides. Contents What Is Magic Number? Why Use Magic Numbers? How to Use Magic Numbers in MT4? How to Use Magic Numbers in MQL4? This is good to know hen you write your Expert Advisor. The main purpose of tagging your trade with a Magic number is so you can manage the trade based upon the circumstances under which it was opened. For example, suppose you have this situation:.

Aside from the standard stoploss and takeprofit exit, you may want to run a trailing-stop on one trade and a channel-stop on the other. This is where the magic number comes in. If a unique magic number was used when these trades were opened, it can now be used to identify what EA opened the trade. For example, the scalping EA could use a magic number of , and the trend-following EA can use a magic number of There is an MQL function named OrderMagicNumber that will get the magic number of a trade.

The function OrderMagicNumber must be run in an order selection loop. The MQL function OrderSelect is used to select a trade. After a trade has been selected, the OrderMagicNumber function is used to get the magic number. Typically the MQL function OrdersTotal is used to cycle through all of the open trades for the account.

Here is an MQL code sample:. Incidentally, this same technique is used to get just about any information about a trade: stoploss, takeprofit, open time, open price, etc. Also, the trade history of an account can be queried in the same way. You can get all of the same information about closed trades. You can do this using basic if-then logic:. In VTS, an input variable named MagicNumber is created with every system.

See this link for an example of the EA input window and the VTS Input Manager window. Here is an image of the magic parameter on the VTS fnOpenOrder function configuration. Note, it is on the advanced tab:. Since you can set the magic parameter on the VTS fnOpenOrder function to any value, not just the MagicNumber variable, the capability to utilize a magic number within VTS is very flexible.

You may have noticed the comment parameter. The comment parameter of OrderSend is used to add a text comment to a trade. Note: you have to be careful if you want to use the comment value to identify a trade because the value can be change by the broker.

The magic number is a Metatrader concept used to track the open positions of an EA. The concept allows the Ea to distinguish the trades that it opened versus those that it did not. Each car uses a license plate. When you detect a car in a different state or even a different country, you observer that every plate that you come across is unique.

Law enforcement can utitlize the number to determine who owns the car. Magic numbers function like the license plates for expert advisors. When an expert advisor detects an open trade, called a ticket, it repeatedly asks for its magic number.

If the magic number of the ticket is identical to the number that the expert advisor expects, then it knows to manage the position.

Magic numbers are helpful, particularly when you want to trade multiple time frames of the same forex pair. Traders often use settings that differ from those on M1 prices versus those that they would use on the daily chart. If they used the Expert advisor with the same magic number on all different time frames, the result would be chaos.

The expert advisor would open and close positions with no rhyme or reason. Setting every Expert advisor to emply an unique magic number disallows the robots from interfering with the others. The magic number of a manually opened trade is 0. The number that you use for a magic number must be a number ranging from 0 and com is a company that specializes in programming an expert advisor for traders. Shaun Overton is the company owner.

Expert Magic Number in MT4,Magic number facts

05/01/ · The magic number is a MetaTrader concept used to track the open positions of an expert advisor. The concept allows the EA to distinguish the trades that it opened versus 24/07/ · The assisting expert must modify only those positions having MagicNumber equal to 0. All three examples are quite realistic, and the users could probably have set such problems 20/07/ · I propose to prescribe in the code of the Magic number, not only the ID of the Expert Advisor, but also the instrument, on which it is running. The fact that the Expert 20/03/ · Setting every Expert advisor to emply an unique magic number disallows the robots from interfering with the others. Magic number factoids. The magic number of a manually All our expert advisors are capable of using magic numbers for assigning to orders, for filtering orders, or for both. Conclusion A magic number is an order parameter that helps MetaTrader ... read more

Here, the first EA will be trend following as it is tracking the one-hour chart and the other one is scalping as it is chasing a minuet chart. I will not provide its code, because it is very long and is given in the attached file. The MagicNumber variable appears on the input tab when you start the EA, so it can be set each time the EA is run. Are PAMM Accounts Safe? In my experience of working in mql 4, I often noticed the senselessness of coding the Magic number by many developers. Privacy Policy Risk Disclosure. I think this will be enough to create a very complex system.

The same magic number can be used in many orders. Forex Books for Beginners General Market Books Trading Psychology Money Management Trading Strategy Advanced Forex Trading. Now we will try to eliminate this shortcoming. Let me just say that this method is basically just a table, which assigns every symbol from the "market view" window a corresponding number: for EURUSD, for example, it's 1, etc. but the type ulong outdid him by combining the positive and negative mantissa.

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