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BBands | Shift
http://www.dukascopy.com/swiss/english/forex/jforex/forum/viewtopic.php?f=141&t=50284		 Page 1 of 1
Author:  sakud [ Sun 27 Oct, 2013, 20:25 ]
Post subject:  BBands | Shift
Although shifting by 1 candle back seems to work fine, setting longer distance gives wrong values.
I'm not sure, but I've noticed that probably it gives values of candle twice older. Tried for instance 4 and got values of 8 candles back.

Anyone can confirm?

Attached strategy :
Attachment:
BbandsShift.vfs [15.62 KiB]
Downloaded 190 times

It's not the strategy however, I just recreated this issue with two bbands indicator blocks only. If you put them into any strategy the output is the same wrong.

Pictures showing the issue : bbands1 showing values of 1 candle back, bbands4 - 4 candles, and bbands8 - 8 candles
Attachment:
bbands1.jpg [285.1 KiB]
Downloaded 307 times

Attachment:
bbands4.jpg [282.86 KiB]
Downloaded 283 times

Attachment:
bbands8.jpg [286.61 KiB]
Downloaded 198 times
Author:  dirk_r1 [ Mon 28 Oct, 2013, 10:01 ]
Post subject:  Re: BBands | Shift
Could you please attach the strategy for further investigation?

Thx in advance!
Author:  sakud [ Mon 28 Oct, 2013, 17:03 ]
Post subject:  Re: BBands | Shift
Added to my 1st post.
Author:  dirk_r1 [ Wed 30 Oct, 2013, 18:00 ]
Post subject:  Re: BBands | Shift
Ok thank you.

Could you please check with the strategy attached?

These filters I add were essential in order to minimize errors.
Please note that when testing with debug variables it may occur that the flash-player (the workspace from VJF) is slower than JAVA (source code) hence it follows that the variables can vary from each other.

Bye

Attachments:
BbandsShift1.vfs [22.1 KiB]
Downloaded 196 times
Author:  sakud [ Thu 31 Oct, 2013, 08:15 ]
Post subject:  Re: BBands | Shift
I don't get it.
Why should you add extra 'if' blocks, while these filters are already built into 'bbands' block? (you must specify period and instrument there anyway)
Is it a beta isuue or it will remain like this?
Author:  dirk_r1 [ Thu 31 Oct, 2013, 09:41 ]
Post subject:  Re: BBands | Shift
It is because you wanted to set up the strategy like this:

Quote:
Although shifting by 1 candle back seems to work fine, setting longer distance gives wrong values.


To add filters means in that case that you will minimize errors - both will work. But as you might know you have to be precise in coding something. If a user just want to filter or check different values - he can.

There are many functions working without the filters - but we do not recommend them.

Cheers
Author:  sakud [ Sat 02 Nov, 2013, 14:18 ]
Post subject:  Re: BBands | Shift
Adding filters didn't help.
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