[amibroker] help coding AFL regarding prior low

["nguyen_atd" <nguyen_atd@xxxxxxxxx>]

Hi, 

I'm trying to learn more about AFL and would like to code the following 
from Turtle Soup:

1. Today's low must make a new 20-day low.
 i.e
Perlow =Ref( LLV( Low , 20 ) , -1 ); 
Newlo= Low > Perlow;

2. The previous 20-day low must have occurred at least four trading 
sessions earlier. 

Tried various combinations of barsince, and read about trough but don't 
understand enough of it to figure this out. Can someone help?

Thanks.

Andy


------------------------------------

Please note that this group is for discussion between users only.

To get support from AmiBroker please send an e-mail directly to 
SUPPORT {at} amibroker.com

For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/

For other support material please check also:
http://www.amibroker.com/support.html
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/amibroker/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/amibroker/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:amibroker-digest@xxxxxxxxxxxxxxx 
    mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    amibroker-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/