invprobit: Inverse probit function

In proDA: Differential Abundance Analysis of Label-Free Mass Spectrometry Data

Description

Calculate the values of the sigmoidal function that is defined by the cumulative normal distribution function (pnorm). This method provides a convenient wrapper for the pnorm that automatically handles negative zeta and is more consistent in its naming.

Usage

invprobit(x, rho, zeta, log = FALSE, oneminus = FALSE)

Arguments

x	numeric vector
rho	numeric vector of length 1 or the same length as x. Specifies the inflection point of the inverse probit curve.
zeta	numeric vector of length 1 or the same length as x. Specifies the scale of the curve at the inflection point of the inverse probit curve.
log	boolean if the log of the result is returned
oneminus	boolean if one minus the result is returned

Value

a numeric vector of length(x).

Examples

 xg <- seq(-5, 5, length.out=101)
 plot(xg, invprobit(xg, rho=-2, zeta=-0.3))

proDA documentation built on Nov. 8, 2020, 5:01 p.m.