How to code UNTIL?

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  • 11/19/2019 at 4:44 AM #113082 quote
    sulimaster
    Participant
    Average

    Hi

    I’m trying to code UNTIL using the below example. I used IF, WHILE and BREAK but an infinite loop was detected and stopped the backtest. Help please to correct my code.

    If my long trade closes early due to a stop loss, then I don’t want the system to enter into another long trade while x is still greater than y UNTIL  y > x i.e. exit long position condition is met which should reset a back to zero.

    I have tried to code a = 1 whilst x is still greater than y when my long trade closes early due to a stop loss.

    x = AroonUp[10]
y = AroonDown[10]

a = 0

IF PositionPerf(1) < 0 AND TRADEPRICE(1) < TRADEPRICE(2) THEN
WHILE (x > y)
a = 1
IF (y > x) THEN
BREAK
ENDIF
WEND
ENDIF

// Conditions to enter long positions
//
IF a = 0 AND (x > y) AND (x > 70) THEN
BUY 1 PERPOINT AT MARKET
ENDIF

// Conditions to exit long positions
//
IF (y > x) THEN
SELL AT MARKET
ENDIF

    Thanks

    Sachin

    11/19/2019 at 8:25 AM #113084 quote
    robertogozzi
    Moderator
    Master

    It’s an infinite loop, in between WHILE ….WEND initial conditions  never change.

    Indeed there’s no need for an iteration, another IF…ENDIF will do.

    Replace lines 7-12 with:

    If x > y then
   a = 1
ENDIF
    Nicolas and sulimaster thanked this post
    11/19/2019 at 6:25 PM #113144 quote
    sulimaster
    Participant
    Average

    Thanks Roberto

    However, wouldn’t the suggested code change prevent the next long trade even after y becomes greater than x if there is no other trade executed after the stop loss exit trade?

    11/19/2019 at 6:42 PM #113147 quote
    robertogozzi
    Moderator
    Master

    You’ll have to assign a different value to a when it’s time to, not always.

    Replace line 4 with:

    ONCE a = 0

    Then you’ll need to add:

    a = 0

    somewhere in the code to reenable trading when you want to, according to your conditions.

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How to code UNTIL?


ProOrder: Automated Strategies & Backtesting

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sulimaster @sulimaster Participant
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This topic contains 3 replies,
has 2 voices, and was last updated by robertogozzi
6 years, 3 months ago.

Topic Details
Forum: ProOrder: Automated Strategies & Backtesting
Language: English
Started: 11/19/2019
Status: Active
Attachments: No files
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