RCI
Rank Correlation Index. The calculation algorithm may not be optimal.
//
// @author Jadbrother
//
//@version=2
study(title = "RCI", shorttitle = "RCI")
itv = input(12, "interval")
src = input(close, "source")
ord(seq, idx, itv) =>
p = seq[idx]
o = 1
for i = 0 to itv - 1
if p < seq[i]
o := o + 1
o
d(itv) =>
sum = 0.0
for i = 0 to itv - 1
sum := sum + pow((i + 1) - ord(src, i, itv), 2)
sum
rci(itv) => (1.0 - 6.0 * d(itv) / (itv * (itv * itv - 1.0))) * 100.0
plot(rci(itv), title = "RCI")
I want to have three RCI lines (9, 26,52) on the same chart.
I tried to make my own script and have been struggling for a while, but couldn't make it.
It would be very grateful if you made the three-period version.