AGAIN: Calculate lot size wit fix risk and fix points
Try my examples:
Thank you Fladimir
i tried to understand - m_money.Percent(PercentRisk); // 10% risk
and - #include <Expert\Money\MoneyFixedRisk.mqh>
But it is not clear wat if i want to calculate for a pending order for example? I never
used the cTrade Library i do not feel good when i am not untherstand wath the code does...
Can u please describe me the Idea how you turn the 200USD risk in ammount for new currency in some words so i may find other ideas arround ?
Wath about
F0 = SymbolInfoDouble(Symbol(),SYMBOL_TRADE_TICK_VALUE);
F1 = SymbolInfoDouble(Symbol(),SYMBOL_TRADE_TICK_VALUE_PROFIT);
F2 = SymbolInfoDouble(Symbol(),SYMBOL_TRADE_TICK_VALUE_LOSS);
Is there a usable relation? how is TickValue calculated ??
An interesting problem - I always managed to calculate through the percentage of risk. I'll try to solve the calculation when the loss is set in money.
To calculate, you need two parameters: a loss (set only positive numbers) and a StopLoss level.
//+------------------------------------------------------------------+ //| Money Money Risk.mq5 | //| Copyright © 2017, Vladimir Karputov | //| http://wmua.ru/slesar/ | //+------------------------------------------------------------------+ #property copyright "Copyright © 2017, Vladimir Karputov" #property link "http://wmua.ru/slesar/" #property version "1.00" //--- #include <Trade\SymbolInfo.mqh> #include <Trade\AccountInfo.mqh> CSymbolInfo m_symbol; // symbol info object CAccountInfo m_account; // account info wrapper //--- #property script_show_inputs //--- input parameters input double InpMaxLossMoney = 200.0; // Max Loss Money (Set only positive numbers) input ushort InpStopLoss = 50; // Stop Loss (in pips) //+------------------------------------------------------------------+ //| Script program start function | //+------------------------------------------------------------------+ void OnStart() { //--- Step 1: Get the current price m_symbol.Name(Symbol()); // sets symbol name if(!RefreshRates()) { Print("Error RefreshRates. Bid=",DoubleToString(m_symbol.Bid(),Digits()), ", Ask=",DoubleToString(m_symbol.Ask(),Digits())); return; } m_symbol.Refresh(); //--- Step 2: Tuning for 3 or 5 digits double m_adjusted_point; // point value adjusted for 3 or 5 points int digits_adjust=1; if(m_symbol.Digits()==3 || m_symbol.Digits()==5) digits_adjust=10; m_adjusted_point=m_symbol.Point()*digits_adjust; //--- Step 3: Calculate double volume=m_symbol.LotsMin(); double price=m_symbol.Ask(); double stop_loss=m_symbol.NormalizePrice(price-InpStopLoss*m_adjusted_point); double profit=0.0; while(-profit<InpMaxLossMoney) { profit=m_account.OrderProfitCheck(m_symbol.Name(),ORDER_TYPE_BUY,volume,price,stop_loss); if(profit==EMPTY_VALUE) { Print("Error calculate, volume: ",DoubleToString(volume,2), ", price: ",DoubleToString(price,m_symbol.Digits()), ", stop_loss: ",DoubleToString(stop_loss,m_symbol.Digits())); return; } volume+=m_symbol.LotsMin(); } //--- Step 4: Result Print("Is given: ",DoubleToString(InpMaxLossMoney,2), ", calculate profit: ",DoubleToString(profit,2), ", volume: ",DoubleToString(volume,2), ", price: ",DoubleToString(price,m_symbol.Digits()), ", stop_loss: ",DoubleToString(stop_loss,m_symbol.Digits())); } //+------------------------------------------------------------------+ //| Refreshes the symbol quotes data | //+------------------------------------------------------------------+ bool RefreshRates() { //--- refresh rates if(!m_symbol.RefreshRates()) return(false); //--- protection against the return value of "zero" if(m_symbol.Ask()==0 || m_symbol.Bid()==0) return(false); //--- return(true); } //+------------------------------------------------------------------+
The problem is solved by a simple cycle with a search of all values :)
Cool this looks much easyser
but ther is a followup question on this:
(myRiskPoints * SymbolInfoDouble(_Symbol,SYMBOL_TRADE_TICK_VALUE)
but i want to adjust myRiskMoney from 200USD to XXXGBP //--(example)
mathenaticly it is:
myRiskMoney *(1/SymbolInfoDouble(_Symbol,SYMBOL_TRADE_TICK_VALUE))
if this is right , then i am OK??
And your risk needs to be measured in the currency of your account.
So you do not need to change anything, just use the account currency for all calculations.
Then this is it:
double myBalance = 0; double myRiskMoney = 0; uint myRiskPoints = 500; double myPercent = 2; string AccountCurrency = AccountInfoString(ACCOUNT_CURRENCY); double myLot = 0; void OnTick() { myBalance = AccountInfoDouble(ACCOUNT_BALANCE); myRiskMoney = (myBalance/100)*myPercent; myLot = NormalizeDouble( myRiskMoney / (myRiskPoints * SymbolInfoDouble(_Symbol,SYMBOL_TRADE_TICK_VALUE)), 2); MessageBox( "Balance: " + DoubleToString(myBalance) +"\n"+ DoubleToString(myPercent,2) + "% Risk is: " + DoubleToString(myRiskMoney,2) + " " + AccountCurrency + "\n" "Distance: " + IntegerToString(myRiskPoints,0) +" -> Lot: " + DoubleToString(myLot,2) ); }
@Vlad - looks much easier right :-D
Then this is it:
@Vlad - looks much easier right :-D
Except this is not correct, a tick is not the same as a point.
Forum on trading, automated trading systems and testing trading strategies
Calculating a trade lotsize by Max Loss in base currency
Alain Verleyen, 2017.03.05 16:54
You don't need to use the same approach as WHRoeder (or anyone) but understand it and apply it for your needs.
To calculate a lot size from a risk I am using such code :
double tickSize = SymbolInfoDouble(Symbol(),SYMBOL_TRADE_TICK_SIZE);
double tickValue = SymbolInfoDouble(Symbol(),SYMBOL_TRADE_TICK_VALUE);
double capital = AccountInfoDouble(ACCOUNT_EQUITY);
double tickCount = sldistance/tickSize;
double valueToRisk = capital*risk/100;
double lots = (tickCount*tickValue)!=0 ? valueToRisk/(tickCount*tickValue) : 0;
Obviously you can use Balance or whatever you want for "capital".
"sldistance" is a decimal value like 0.0012 (12 pips). "Risk" is for example 2 (for 2% of capital to use).
@Alain Verleyen
As far as I know for Forex enough "SYMBOL_TRADE_TICK_VALUE".
"SYMBOL_TRADE_TICK_SIZE" is needed for CFDs and Futures - symbols with different margins in different directions.
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i scrolled to many pages but the moor i read them the less i understand.
Basicli it is simple math
Balance in USD
Distance 500 Points
myBalance is 10000 USD myRisk 2% myRiskMoney 200 USD
myLot is then 200USD / 500 Points
Job done! (Help me if the code is wrong so far:)
As long i trade USDXXX - but now i wont to trade EURCHF or so.
How i adjust EURCHF wenn i have 200USD risk how much EUR will it be and how can i then end up with the lots
there must be a easy codeline or a multiplicator ore something - how is the math done??
Scrolled many pages but ended up confused ?!