AFL Coding Help NEEDED

I

inPeace

hi , i like to write a order-cancelling action with two chained conditions but dont know how.

it's like this:
given : A, B, C

conidtion 1:
IF last-price = A+ B, trigger condition 2
condition 2:
when last-price = A+C , Cancel buy or sell order

in the above, condition1 must precede condition2 (OR without condition1, condition2 will not be triggerred)


i'm using TWS platform.

thanks!
 
They wont reject your post... It's an honest question....

Beware, C = Close in AFL

the basic syntax is this

a1 = value;
b1 = value;
c1 = value;
lastprice = Close;

if lastprice = (a1+b1);
{
condition 2;
}

That is the basic syntax.... Need the rest of the formula to properly write condition 2

In order for condition 2 to exist where are you generating the buy/sell order????
 
Quote from giles117:

They wont reject your post... It's an honest question....

Beware, C = Close in AFL

the basic syntax is this

a1 = value;
b1 = value;
c1 = value;
lastprice = Close;

if lastprice = (a1+b1);
{
condition 2;
}

That is the basic syntax.... Need the rest of the formula to properly write condition 2

In order for condition 2 to exist where are you generating the buy/sell order????
More...




Thanks :)
i still cannot see my post at the yahoo group. well never mind.

So do you mean i can put another "if" statement inside the first one?

llike this:


if lastprice = (a1+b1);
{
if LASTPRICE = (a1+B1);

{ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

}


}


THE REST OF THE FORMULA IS LIKE THIS:




_SECTION_BEGIN("SYS50");

//SETTING
A1 = 50;
B1 = 50;
C1 = 50;
D1 = 50;

//param trigger button to reset status
resetStatus = ParamTrigger("resetStatus","resetStatus");

//START
DateNumNow = Now(3);
DN = DateNum();
TN = TimeNum();

//check if order placed
OrderPlaced = StaticVarGet("OrderPlaced");

if(resetStatus)
{
StaticVarSet("OrderPlaced",0);
}

OrderPlaced = StaticVarGet("OrderPlaced");




//check if order is triggered, place order if condition fullfiled
if( (IsEmpty(OrderPlaced) OR OrderPlaced==0) )
{


ibc = GetTradingInterface("IB");
IBcStatus = ibc.IsConnected();

if( IBcStatus )
{
//Long side, place order

StaticVarSet("OrderPlaced",1);

LimitBuy = D1+A1;
parentIDLong = ibc.PlaceOrder(Name(), "BUY", 1, "LMT", LimitBuy, 0, "DAY", False );
ibc.PlaceOrder(Name(), "SELL", 1, "LMT", LimitBuy+B1, 0, "DAY", False, 1, "", parentIDLong );
ibc.PlaceOrder(Name(), "SELL", 1, "TRAIL", C1, C1, "DAY", True, 1, "", parentIDLong );

//short side, place order

LimitSell = D1+B1;
parentIDShort = ibc.PlaceOrder(Name(), "SELL", 1, "LMT", LimitSell, 0, "DAY", False );
ibc.PlaceOrder(Name(), "BUY", 1, "LMT", LimitSell-D1, 0, "DAY", False, 1, "", parentIDShort );
ibc.PlaceOrder(Name(), "BUY", 1, "TRAIL", C1, C1, "DAY", True, 1, "", parentIDShort );

}
}
 
I see you are working on AT with ibc.....

Refer to the ref guide for proper formatting of an if-else loop as it will not work on arrays...

And yes, you can nest if-else statements. Be aware, if the variables inside the if-else loops are need elswhere you have to ensure they are static variables .... StaticVarSet, etc....


iif works on arrays.....

ex...

Try this...


Lastprice=C;
Condition1 = Lastprice == (a1+b1);
Condition2 = Lastprice == (a1+C1);
Cancel=0;
for ( i = 1; i < BarCount; i++ )
{
if (Condition1)
{
if (Condition2)
{
StaticVarSet("Cancel",1);
}
}
}

Cancel=StaticVarGet("cancel");

Then use the cancel variable to initiate a cancel order. I dont see a cancel submission order in your AT code....

Or you could write it like this


cancel = iif(lastprice==(a1+b1),iif(lastprice==(a1+c1),True,False),False);

Much simpler and more compact....

Just to confirm, you are looking for when c1 and c2 are both met at the same time, correct?
 
Quote from giles117:

I see you are working on AT with ibc.....

Refer to the ref guide for proper formatting of an if-else loop as it will not work on arrays...

And yes, you can nest if-else statements. Be aware, if the variables inside the if-else loops are need elswhere you have to ensure they are static variables .... StaticVarSet, etc....


iif works on arrays.....

ex...

Try this...


Lastprice=C;
Condition1 = Lastprice == (a1+b1);
Condition2 = Lastprice == (a1+C1);
Cancel=0;
for ( i = 1; i < BarCount; i++ )
{
if (Condition1)
{
if (Condition2)
{
StaticVarSet("Cancel",1);
}
}
}

Cancel=StaticVarGet("cancel");

Then use the cancel variable to initiate a cancel order. I dont see a cancel submission order in your AT code....

Or you could write it like this


cancel = iif(lastprice==(a1+b1),iif(lastprice==(a1+c1),True,False),False);

Much simpler and more compact....

Just to confirm, you are looking for when c1 and c2 are both met at the same time, correct?
More...



You cant see any "cancel submission" because i dont have any. i still a code idiot. just pick up somebody's creation and modify to see if it works for my need. kind of stealth-diy, hahaa

so you mean it needs a "cancel variable" for the whole thing to work?


i'm not sure the meaning of "both met at the same time" ...
it should be like "without condition1, condition2 will not be triggered" or the condition for condition2 is condition1...

precisely speaking, condition1 must be met BEFORE condition2 in time.. if condition1 is not met, even condition2 is met, it will not be triggered.

nevertheless, i like the succint version very much. it is beautiful.
 
Herman is the author of this code, and very helpful I might add. I was having issues with it sending multiple orders and he kindly recoded it on his end to eliminate the duplicates...

Perhapsby contacting herman via email, he can add the cancellation code in it for you.....
 
I'm finding he is getting very hard to get a hold of Jake. Other people have complained on this board in the past, though I can vouch for the high quality of his work.

I just hope this is temporary.
 
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