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<FONT
face="Courier New">SumVol20updays = <FONT
color=#0000ff>Sum((<FONT
color=#0000ff>ROC(<FONT
color=#ff0000>C,<FONT
color=#ff00ff>1)><FONT
color=#ff00ff>0)*<FONT
face="Courier New">V<FONT
color=#000000>,20<FONT
color=#000000>);
<FONT face=Arial color=#0000ff
size=2>
<FONT face=Arial color=#0000ff
size=2>herman
<FONT face=Tahoma
size=2>-----Original Message-----From: kristaura
[mailto:camplevel@xxxxxxxxxxxx]Sent: November 27, 2003 11:31
AMTo: amibroker@xxxxxxxxxxxxxxxSubject: [amibroker] Re:
sum only positive daysSomeday I will learn to write
what I think:"This is my attempt (without using looping) for summing
the volumes on the last N up days:"should read:"over the
last "pds" up days:"Note: N is a variable and is the number of bars
encompassing "pds".kris--- In amibroker@xxxxxxxxxxxxxxx,
"kristaura" <camplevel@xxxx> wrote:> Hello Jason,> This is
my attempt (without using looping) for summing the volumes on > the
last N up days:> > pds=20;> up=C>ref(C,-1);>
N=barindex()-valuewhen(up,barindex(),pds)+1;>
UpVol=sum(up*V,N);> Plot(up*V,"Up Days",1,2);> Plot(UpVol,"Sum
Up Vol",1,1);> > kris> > Send
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