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Questions from Beginners MQL5 MT5 MetaTrader 5 - page 419

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-Aleks-:
Two years - in tester :) Well, it's been running for a year on the demo... A lot of bugs there, when I had to connect it because of external classes... And now there's such a bug, which I don't know how to fix - I'll just increase array's size by one digit, for now. Why isn't there an auto-size, like for a graphical buffer, or is there?

Try it like this.

Initialize the array OrderBU[1].

First increase the size of the array ( ArrayResize(OrderBU,NorderBU+1) ), then OrderBU[NorderBU]=OrderTicket();NorderBU++;

new-rena:

Try it like this.

Initialize the array OrderBU[1].

First increase the size of the array ( ArrayResize(OrderBU,NorderBU+1) ), then OrderBU[NorderBU]=OrderTicket();NorderBU++;

Thanks - I'll experiment at my leisure.
Please advise how to implement the following thing in the code.
There is a base variable A, if it is less than zero, then we use five more variables - the values are assigned from the indicator call function - iCustom.
Having received the values, we should rank them - find values above and below the A variable and define from the two groups - maximum, minimum, average value.
I think that it is necessary to use an array, but I don't quite understand how.

Could you please advise us on this point?

For example, we have a Williams Percent Range (%R) indicator on a chart and we drag the On Balance Volume (OBV) indicator into its window from the navigator.

https://charts.mql5.com/8/675/xauusd-h4-metaquotes-software-corp.png

The %R works in the range 0 -100%, the OBV does not have a specific binding.

When OBV is in the %R window, we visually see that it goes beyond -20 or -80%.

How can we get OBV above -20% or below -80% in our EA?

How to bind the OBV in the custom indicator to the range of 0 -100%? Normalize it to it (range)? How can this be done?

I understand you don't need to normalize OBV to %R (the picture will be different).

Maybe it's elementary, I just haven't encountered it.

-Aleks-:
Please advise how to implement the following thing in the code.
There is a base variable A, if it is less than zero, then we use five more variables - the values are assigned from the indicator call function - iCustom.
Having received the values, we should rank them - find values above and below the A variable and define from the two groups - maximum, minimum, average value.
I think that we should use the array but I do not quite understand how.

if (p1>p2&&p1>p3) , if (p2>p1&&p2>p3) , if (p3>p2&&p3>p1)

I do it this way,

I need a floating lot parameter, the first lot is set by the user, then this parameter is no longer needed and the EA works itself and in case of a loss it is raised by the maximum lot specified in the program (or an external variable), in case of a profit it is decreased by the specified amount .

If I write the parameter in the "Init ", the EA will stop accessing the external variable lot ?

or how do I do it ?

this is an approximate expression .

Hello. Can you please tell me how to use news data in my EA? Do I need an indicator for this, or can the EA find important news by itself?
Leanid Aladzyeu:

if (p1>p2&&p1>p3) , if (p2>p1&&p2>p3) , if (p3>p2&&p3>p1)

I do it this way,

It's not convenient, especially with a large number of parameters...

The solution via array is interesting. Especially interesting how to find the closest value of a variable when averaging the total number of values.

first_may:

Good evening. Trying to write a simple EA on tenkan and kinjun crossing. Here is the code:

void OnTick()

void OnTick()

{

TradeSignal_20();

}


int TradeSignal_20()

{

int sig=0;


if(h_ich==INVALID_HANDLE)

{

h_ich=iIchimoku(Symbol(),Period(),IKHtenkansen,IKHkijunsen,IKHsenkouspanb);

return(0);

}

else

{

if (CopyBuffer(h_ich,0,0,3,ich1_buffer)<2) return(0); // TENKANSEN_LINE

if (CopyBuffer(h_ich,1,0,3,ich2_buffer)<2) return(0); // KIJUNSEN_LINE

if (!ArraySetAsSeries(ich1_buffer,true)) return(0);

if (!ArraySetAsSeries(ich2_buffer,true)) return(0);

}

//--- check condition and set value for sig

if(ich1_buffer[1]>ich2_buffer[1]) sig=1;

else if(ich1_buffer[1]<ich2_buffer[1]) sig=-1;

else sig=0;

if (ich1_buffer[1]>ich2_buffer[1])

if (ich1_buffer[2]<ich2_buffer[2])

Alert(Symbol()+": purchase");

if (ich1_buffer[1]<ich2_buffer[1])

if (ich1_buffer[2]>ich2_buffer[2])

Alert(Symbol()+": sale");

//--- return trade signal

return (sig);

}

//+------------------------------------------------------------------+

How can I make the alert be called only once and not constantly?

Run it not every tick, but as needed.
Vasiliy Smirnov:
Run not every tick, but as needed.
And how should it be? When a new bar opens - then make a check for a new bar...
1...412413414415416417418419420421422423424425426...1605
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