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Hi,
Still trying to implement Ehler's Center of Gravity indicator. This
requires summing the last n closing prices, with weights of 1..n on
each price. I got it to work perfectly for today, but can't get it
to work for yesterday or any day before. I need to iterate from n
days back to the day of the bar in the backtest. I tried using
barindex(), but putting that into the script doesn't work. Here is
the code that works on today's bar only. What do I need to do to get
this to work on all other bars? Driving me nuts! Thanks in advance.
=========================================================
EnableScript("jscript"); bar_index=BarIndex();
<%
Close=VBArray(AFL("close")).toArray();
bar_index_inscript=AFL("bar_index"); /*this gives error if I try to
use in the loop below*/
numerator=0; period=10;
for( i=0; i<period; i++ )
{
numerator=numerator + ((i+1)*Close[Close.length - i - 1]);
}
AFL("i")=i;
AFL("numerator")=numerator;
AFL("period")=period;
AFL("closelength")=Close.length;
%>
denominator=period*MA(Close,period);
cog=IIf(denominator!=0,-numerator/denominator,0);
cogyest=Ref(cog,-1);
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