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Peter,
AA window:
Monthly rate of change
You can use the Param button in AA to select number of months
n last quotations
n=1
//Monthly Rate of Change summed
MROC = ROC( C, 21 );//approx 21 trading days per month
Months=Param("Months",6,1,12,1);
function GetSumOfMonthlyROC( array, howmanyMonths )
{
MonthlyROC = ROC( C, 21 );
MonthlySum = 0;
for( i = 0; i < howmanyMonths; i++ )
{
MonthlySum = MonthlySum + Ref( MonthlyROC, -21 * i );
}
return MonthlySum;
}
Filter=1;
AddColumn(GetSumOfMonthlyROC(C, Months ),WriteVal(Months,1)+"_Months");
Anthony
----- Original Message -----
From: "lamplowman" <lamplowman@xxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Tuesday, August 31, 2004 6:33 AM
Subject: [amibroker] Draw a line in AFL
>
> I would like to draw a line in AFL from the close say six months ago
> to close today and also calculate the % gain over that period.
>
> I've looked at LineArray but don't seem to be able to work it out.
>
> Has anyone already done this?
>
> Thanks
> Peter
>
>
>
>
> Check AmiBroker web page at:
> http://www.amibroker.com/
>
> Check group FAQ at:
http://groups.yahoo.com/group/amibroker/files/groupfaq.html
> Yahoo! Groups Links
>
>
>
>
>
>
>
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