The following formula seems to do what you want.
X = HHV( Close , 20 ); Sell = 0;Short = 0;Cover = 0;Buy=0; Filter= C >= X; AddColumn(C,"Close",1.2); AddColumn(X,"HHV 20",8.2); Donald F Lindberg _____ From: amibroker@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of burlap58 Sent: Tuesday, September 18, 2007 2:50 PM To: amibroker@yahoogroups.com Subject: [amibroker] 20 Day High In using the following AFL: X = 20; // number of days NewHigh = HHV( Close, X ); // Filter = NewHigh; AddColumn( Close, "Close" ); I'm trying to find symbols in a watch list whose most recent close is a 20 day high. I get an exploration, but many of them are not 20 day highs. I'm using a 20 period Donchian Channel as a comparison. I was expecting all the listed symbol's most recent close to close greater than yesterday's channel. I realize the achannel won't be broken. Any suggestions? Thanks, Lloyd
