Looping Questions

[RobGiles]

Re the following piece of looping code:

BuyPrice[j] = LEPrice[j]; //I get BuyPrice is set as LEPrice which is an identifier in the general code

PriceAtBuy = LEPrice[j]; //What I don’t get is why this piece of code holds the buy price??

[LeeDanello]

BuyPrice holds the variable LEPrice and is used in plotting the entry price on the chart while PriceAtBuy is used in the looping code to check to see if you’re in the trade.

ie

Code:

if(PriceAtBuy > 0 )
{
if( LBIT[j] > 1 AND (LEx[j] OR OnSecondLastBarOfDelistedSecurity[j]))
{
Sell[j] = True;
SellPrice[j] = LExPrice[j];
PriceAtBuy = 0;
}
}

PlotShapes(shapeHollowSmallSquare*Buy,TextColour,0,BuyPrice,0); //plots a small hollow square right at the buy price

[SaidBitar]

Just iterating with Maurice said
Every time you have Buy/Sell/Short or cover in your code you need to mention the BuyPrice,..
otherwise how the system will know what is the price required to buy is it the open , the close, high ,…
if you fail to mention this price Amibroker will take the default one that is found in the settings

PriceAtBuy is a variable that you can hold a value in side it and think of it more like a flag
if this flag is up i.e has value then you are in trade if it is down i.e. 0 then you are not in the trade and this flag will be used to eliminate the probability of having multiple entries on the same stock
if you do not like to use it you can use if (LBIT > 1) same results

[RobGiles]

Thanks Maurice & Said

Apologies for repeating your comments, but I’m just going to note a summary of what you’ve kindly shared with me:

PriceAtBuy:
– used in the Looping Code (not used in normal code) to see if you’re in the trade.
– a variable or flag that you can hold a value inside.
– the value per se doesn’t matter other than it needs to be > 1 to indicate that there’s a position on, or 0 if no position.
– no bar reference is given to it as we’re not looking for a bar by bar value, just a constant value until position is exited.

BuyPrice:
– Holds the variable LEPrice and is used to plot the entry price on the chart
– as it is black bold text, it must be a built in identifier (array)??

[LeeDanello]

I think you’re right. Anything that turns blue in the code is an inbuilt identifier or array that AMIBROKER recognises.

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