afl volume spike indicator

["David Holzgrefe" <dtholz@xxxx>]

Hi all here another basic afl search to find stocks 
with volume spikes above that average, adjust the number in the buy field to 
suit your criteria 
 
/*volume average of 250 periods divided by52 to 
give a weekly volume  with a buy signal for stocks trading over 1,000,000 
shares per week and the n days greater than average.By David Holzgrefe 
16.02.2001*/
 
annvol =  sum(v,250)/52 ;
 
 
 
buy =annvol>1000000and v>annvol 
;