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Jayson, this will sum the last 20 bars for x which will either be zero or
the volume.
x=iif(c>ref(c,-1),v,0)
Y = sum(x,20);
Cheers,
Graham
http://groups.msn.com/ASXShareTrading
http://groups.msn.com/FMSAustralia
> -----Original Message-----
> From: Jayson [mailto:jcasavant@xxxxxxxxxxx]
> Sent: Thursday, 27 November 2003 3:18 AM
> To: 1ami
> Subject: [amibroker] sum only positive days
>
> I cannot seem to get my mind around what should be a fairly simple thing
> to code. Perhaps someone could nudge me in the right direction.
>
> I want to sum the volume of the last 20 up days and compare it to the last
> 20 down days. This is not to be confused with summing the up days of the
> last 20 bars, Simple code such as plot( c>ref(c,-1)"",4,2); will plot
> just the up days and x=iif(c>ref(c,-1),v,0) can calculate the volume but
> how do I sum the last 20 bars where x>0 as opposed to summing the last 20
> bars of X ?
>
> TIA
>
> Regards,
> Jayson
>
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