How to code UNTIL?

sulimaster · 2019-11-19T03:44:46+00:00

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) 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

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

Legend
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
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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

Legend
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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