Description Usage Arguments Details Value See Also Examples
View source: R/PreparingTheIndexes.R
Takes a numeric vector and return an expression index (i.e., a sequence of 1,-1, and 0)
1 | index(x, cutoff)
|
x |
A numeric |
cutoff |
A numeric, dermine the threshold for indexing |
The function defines limits around the center (median or mean), +/- cutoff value in median absolute deviation (MAD) or standard deviation (SD) units respectively.The user defines a parameter cutoff that determines the limits around the gene-expression center. Then the function calculates the index value at each time point according to:
0: standardized value is within the limits (+/- cutoff)
1: standardized value exceeds the upper limit (+ cutoff)
-1: standardized value exceeds the lower limit (- cutoff)
Gene expression index
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