I'm trying to translate this if someone could help please? [source http://qusma.com/2012/10/14/the-predictive-value-of-the-number-of-recent-updown-days-udidsri/]
--If the day closes up, movement = 1, otherwise movement = -1.
--Multiply movement by (1 +abs( return))5
--Sum the movements for the last 20 days.
--UDIDSRI is the % rank of today's sum, compared to the last 50 days of sums.
So far I have this:
x = ROC(C,1);
a = x*(1+ABS(x))^5;
b = Sum(a,20);
UDIDSRI = ???
Plot(UDIDSRI ,"",colorBlack);
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Posted by: cam_111000@yahoo.com.au
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