Check for no exit in prior period

[jackie540]

Hi, everyone:

Can anyone help me with how to code conditon for no exit in the prior period?

Thanks

 

[StratOpt]

I would try, but I have not the slightest clue what you are even talking about here ???

 

[jackie540]

I'm attempting to code in EL how to check that I haven't exited a position in the prior period/bar/interval. If marketposition = 1 or 0, or -1 tells me if I have a long, no or short position respectively for the current bar, then marketposition(1) tells me if I have a position for the prior bar. BUT, would I simply check marketposition(1) = 0 to see if I exited the prior period, thinking that if marketposition(1) = 0 I have no position therefore I didn't exit a position? Thanks to all my readers.

 

[StratOpt]

A common coding concept in EL is to do the following

variables:
MP ( 0 ) ;

MP = MarketPosition ;

if MP <> MP [ 1 ] and MP = 0 then ... This says that I have just changed position but now am flat
if MP <> MP[ 1] and MP[ 1 ] = -1 then ... This says I have just changed position and I WAS short
if MP <> MP[ 1 ] and MP[ 1 ] = 1 then ... This says I have just changed position and I WAS long
if MP <> MP[ 1] and MP = -1 then ... This says I have just changed position and I AM short
if MP <> MP[ 1 ] and MP = 1 then ... This says I have just changed position and I AM long


MarketPosition( 1 ) is not as you describe it. That would say that your last closed out trade was ??? That could be one bar or 100 bars ago.

Greg

 

[jackie540]

StratOpt/Greg:

First, thank you so much!

Can you help me with how MP[1] relates to bar interval? If I'm trying to check if my MP occured one bar ago, can I do that? Or can you potentially get multiple MPs in one bar interval?

Thanks!

 

[StratOpt]

Sure the square brackets in EL is called an executive offset. What this basically means is that it will check N bars back from the current bar so if you put in a [ 1 ] then that refers to the value of the variable on the previous bar. If you use a [ 5 ] then this refers to the bar 5 bars before the current bar. The only way you can get more than one MP in a bar interval with your strategy is if you write it that way using intrabarpersistant variables. The [ 1 ] works wonders and you will use this sort of thing so often in your code writing that it will become second nature

want to check to see if a bar is the first bar of a new day .... if date <> date[ 1 ] then begin ....

 

[jackie540]

StratOpt, again thank you so very much! I truly appreciate all your help!

 

[StratOpt]

Anytime pal