Short trades not being taken

Gamestudio Links

Zorro Links

Change chart colours
by 7th_zorro. 05/11/24 09:25

Data from CSV not parsed correctly
by dr_panther. 05/06/24 18:50

AUM Magazine

Latest Screens

1 registered members (AbrahamR), 717 guests, and 4 spiders.

Key: Admin, Global Mod, Mod

Newest Members

Print Thread

Rate Thread

Short trades not being taken #428394 08/26/13 19:30 08/26/13 19:30
Joined: May 2013 Posts: 245 S swingtraderkk OP Member
swingtraderkk OP Member S Joined: May 2013 Posts: 245	OK spent way too long trying to bug hunt this issue. For some reason, long trades only are being taken my scripts. Example script below: Code: function run() { set(LOGFILE); BarOffset = timeOffset(ET,0,17,0); BarPeriod = 1440; StartDate = 2002; vars cl = series(priceClose()); int threshold = 80; int exitbars = 8; ExitTime = exitbars; Stop = 140*PIP; if (cl[0] > MaxVal(cl+1,threshold)) enterLong(); if (cl[0] < MinVal(cl+1,threshold)) enterShort(); }

Re: Short trades not being taken [Re: swingtraderkk] #428401 08/26/13 20:59 08/26/13 20:59
A acidburn Unregistered
acidburn Unregistered A	Add LookBack = 100 (for example), then it works. Although it is a bit strange that M{ax,in}Val functions don't complain about Lookback, but many others do. Probably that fact confused you.

Re: Short trades not being taken [Re: ] #428406 08/27/13 04:51 08/27/13 04:51
Joined: May 2013 Posts: 245 S swingtraderkk OP Member
swingtraderkk OP Member S Joined: May 2013 Posts: 245	Thanks acidburn! This was driving me crazy! Especially because MaxVal seemed to cope just fine without LookBack. Another strange issue is why a LookBack of 80 doesn't work. BTW does this code successfully use daily bars with a daily close of 5pm ET?

Re: Short trades not being taken [Re: swingtraderkk] #428416 08/27/13 08:24 08/27/13 08:24
Joined: Jul 2000 Posts: 27,986 Frankfurt jcl Chief Engineer
jcl Chief Engineer Joined: Jul 2000 Posts: 27,986 Frankfurt	No, for daily bars starting and closing at 17:00 ET, you need this: BarOffset = (ET+17)*60; And the short trade problem was indeed tricky, I had to look twice until I saw the reason. You're shifting the series by 1 and use 80 bars, so your lookback period must be 1+80 = 81 at least. The default is 80. The too short lookback period caused the first value of the series to be wrong, therefore the short trade condition was never met. The computer can not detect this kind of error, so you get no error message.

Re: Short trades not being taken [Re: jcl] #428453 08/27/13 16:51 08/27/13 16:51
Joined: May 2013 Posts: 245 S swingtraderkk OP Member
swingtraderkk OP Member S Joined: May 2013 Posts: 245	Thanks jcl. Much appreciated on both counts.

Moderated by Petra