suppose i have a vector W(idx) = [ …….. 1 4 3 6 7 4 2 6 0 0 0 0 20 6 15 2 3 0 0 0 0 31…… ]
I want to find arrays that have:
- z-score value higher than 3,
- have a value over 15.
- its previous arrays should have at least three times consecutively same value of 0
With the provided exmple vector W(idx), the idx-points that meet above mentioned specifications would be points that has 20 and 31 as W-value.
I have written the first 1 & 2 specifications, but can't figure how to implement the #3.
stdDev = std(W(idx))meanValue = mean(W(idx))zFactor = 3 % arbitrary value to filter only outlier with huge value (usually, z factor of 3 -> outlier)
outliers_1 = find((abs(W(idx)-meanValue) > (zFactor * stdDev)) & (W(idx) > 20) )
#3 –> the final outlier's previous arrays should have at least three consecutive value of 0
Maybe in a similar way like this?
outlier = find(W(outliers_1 - 1) == W(outliers_1 -2) == W(Outliers_1 - 3) == 0)
Please help me out how to find arrays that have consecutively 0 before previously stated outlier_1 position
Thanks
Best Answer