zScores:
Function to calculate z-scores from p-values
Description
Function to calculate z-score from a normal distribution from a
two-tailed p-value and sign vector (e.g. log2 fold change). To avoid
-Inf/Inf z-scores, p-values < 'limit' are set to 'limit'.
Vector that will be used to determine the sign of
the z-scores. Only the sign of the values is considered, so any
suitable vectors (e.g. log2 fold change) can be supplied.
limit
Numeric (default: .Machine$double.xmin). pvalues < 'limit' will be
set to 'limit' to avoid Inf/-Inf z-scores. Set to NULL to disable.
tails
Numeric, either 1 for p-values from one-tailed or 2 for p-values from two-tailed tests.