How to code? - Page 68

ableze_joepardy · #**671** (**permalink**) 02-08-2008, 06:52 AM

hi.. im new here n new to mql4 coding.. i've construct few codes based on specific condition.. hope u guys can help me to correct if theres any mistake..

okay.. lets begin

1) EMA CROSS
BUY if:
- EMA 5 > EMA 18
- both of the line is upward
- different between current n previous price for EMA5 >= 10pips

Attachment 53944

currently im using this:

Code:

double EMA5 = iMA(NULL, 0, 5, 0, MODE_EMA, PRICE_CLOSE, 0);
double EMA5_prev = iMA(NULL, 0, 5, 0, MODE_EMA, PRICE_CLOSE, 1);

double EMA18 = iMA(NULL, 0, 18, 0, MODE_EMA, PRICE_CLOSE, 0);
double EMA18_prev = iMA(NULL, 0, 18, 0, MODE_EMA, PRICE_CLOSE, 1);

if (EMA5 > EMA18) {

     if ( EMA5 - EMA5_prev >= 10 && EMA18 > EMA_prev) {

           Order = BUY;

     }

}


<-- BUY CODE -->

2) RSI

Code:

double RSI = iRSI(NULL, 0, 18, PRICE_CLOSE, Current + 0);
double RSI_prev = iRSI(NULL, 0, 18, PRICE_CLOSE, Current + 1);

if (RSI > 50 && RSI > RSI_prev) {
    
     Order = BUY;

}

<-- BUY CODE -->

3) STOCH

Buy when the Oscillator (either %K or %D) falls below a specific level (e.g., 20) and then rises above that level. Sell when the Oscillator rises above a specific level (e.g., 80) and then falls below that level

Code:

double STOCH_K = iStochastic(NULL, 0, 5, 3, 3, MODE_SMA, 0, MODE_MAIN, 0);
double STOCH_D = iStochastic(NULL, 0, 5, 3, 3, MODE_SMA, 0, MODE_SIGNAL, 0);

if (STOCH_K < 20 || STOCH_D < 20) {

     Order = BUY;

}
<--- BUY CODE --->

* i think i've skipped the red one.. dont know how to do that part..

Buy when the %K line rises above the %D line and sell when the %K line falls below the %D line

Code:

double STOCH_K = iStochastic(NULL, 0, 5, 3, 3, MODE_SMA, 0, MODE_MAIN, 0);
double STOCH_D = iStochastic(NULL, 0, 5, 3, 3, MODE_SMA, 0, MODE_SIGNAL, 0);

if (STOCH_K > STOCH_D) {

    Order BUY;

} else 

if {STOCH_K < STOCH_D) {

    Order SELL;

}

<--- BUY & SELL CODE --->

4) In Stoc coding, MODE_MAIN indicates for what? MODE_SIGNAL indicates for what?

5) how to put auto close and auto on timer for EA?
eg: set open at 8am and close at 5pm

6) how to put disable EA on other chart when a post is opened?
such as use an EA on 2 pairs (GU and EJ) when a post on GU is opened then disable EA on EJ..

sorry if this question is quite basic.. hope u guys can teach me.. thx

Big Be · #**672** (**permalink**) 02-10-2008, 08:19 PM

I have put together a trend riding EA. When profit hits a certain level, I want to move the stoploss for PART of the open lots, to that profit level. I would let the rest of the lots be (or move the stoploss for the rest up to break even).
I am not using a Take Profit.

How do I code this?

Thanks,
Big Be

Michel · #**673** (**permalink**) 02-10-2008, 09:32 PM

Quote:

Originally Posted by Big Be

... When profit hits a certain level, I want to move the stoploss for PART of the open lots, to that profit level. ..
How do I code this?

Thanks,
Big Be

You cannot do that unless you have multiple positions : there may be only one SP/TP by position. But you can close a part of a position : just put the number of lots you want to close in the OrderClose(..) function.
What you also can do (it depends of your broker) is to place a pending stop (hedge) for the part you want : then later you have to do a "CloseBy" command or function.

la totona · #**674** (**permalink**) 02-10-2008, 11:10 PM

Quote:

Originally Posted by SIDDESH

Hi,

Can you please give the code for previous bar.

This can be used in the EA to limit placing the orders when the previous bar is more than certain height.

Regards,

SIDDESH

Siddesh and others that can help:

The code for the previous bar is below:

//to buy
double indicatorpast = icustom(....................,1);
double indicatornow = icustom(....................,0);

if (close[1]<indicatorpast && close[0]>indicatornow) OpenBUY();
if (close[1]>indicatorpast && close[0]<indicatornow) OpenSELL();

but with this satatement, the expert opens positions not only when the price cross the indicator, it opens position above the indicator too. I want that the expert open position ONLY when it cross the indicator, so i tried that:

//to buy
double indicatorpast = icustom(....................,1);
double indicatornow = icustom(....................,0);

if (close[1]<indicatorpast && close[0]==indicatornow) OpenBUY();
if (close[1]>indicatorpast && close[0]==indicatornow) OpenSELL();

But this statement it is not performing.

Do you know what is happen? Because i think there arent errors in the statement.

The question is why is not opening at the exact point of cross when close[0]==Indicatornow? If the function would be with ==, we will prevent the open of orders above the point of crooss between the indicator and the close of the present bar but is not funtioning with this type of relationship between the variables.

DooMGuarD · #**675** (**permalink**) 02-11-2008, 11:58 PM

hi all

i ned to cal this API function in MT4

int GetMouseMovePoints(
UINT cbSize // size of the MOUSEMOVEPOINT struct
LPMOUSEMOVEPOINT lppt, // pointer to current mouse move point
LPMOUSEMOVEPOINT lpptBuf, // buffer to store the points
int nBufPoints, // how many points the buffer can store
DWORD resolution // resolution of the points
);

please tell me the #import clausule

thanks

Linuxser · #**676** (**permalink**) 02-12-2008, 01:08 AM

Quote:

Originally Posted by DooMGuarD

hi all

i ned to cal this API function in MT4

int GetMouseMovePoints(
UINT cbSize // size of the MOUSEMOVEPOINT struct
LPMOUSEMOVEPOINT lppt, // pointer to current mouse move point
LPMOUSEMOVEPOINT lpptBuf, // buffer to store the points
int nBufPoints, // how many points the buffer can store
DWORD resolution // resolution of the points
);

please tell me the #import clausule

thanks

Moved your question to this thread.

wolfe · #**677** (**permalink**) 02-12-2008, 01:53 AM

I know this has been covered before, but can someone show me some code to allow only 1 trade per bar?

Thanks.

Big Be · #**678** (**permalink**) 02-12-2008, 02:28 AM

Michel,
Thanks.
I was afraid of that.

Now I have to learn "fun with Magic Numbers".

Big Be

Dan7974 · #**679** (**permalink**) 02-12-2008, 09:03 AM

How do I code this?
If previous 6 trades were a loss, I tried this, and it won't work!!!

PHP Code:


			
int MTL;

extern MaxTradeLoss=6;



int start()

 {

    for(int b=0;b<MaxTradeLoss;b++)

     {

      if(OrderSelect(b,SELECT_BY_POS,MODE_HISTORY)==true)

       {

        if(OrderSymbol()==Symbol() && OrderProfit()<0)

         { 

          MTL++;

         }

       }

     }

   MTL=0;



  return(0);

 }

azmel · #**680** (**permalink**) 02-12-2008, 09:15 AM

Quote:

Originally Posted by Dan7974

How do I code this?
If previous 6 trades were a loss, I tried this, and it won't work!!!

PHP Code:


			
int MTL;

extern MaxTradeLoss=6;



int start()

 {

    for(int b=0;b<MaxTradeLoss;b++)

     {

      if(OrderSelect(b,SELECT_BY_POS,MODE_HISTORY)==true)

       {

        if(OrderSymbol()==Symbol() && OrderProfit()<0)

         { 

          MTL++;

         }

       }

     }

   MTL=0;



  return(0);

 }

your statement MTL=0; pretty much sets MTL to zero regardless what it counted in the "for" loop. That line should be before the "for" loop and not after.

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