flowCore (version 1.32.2)

inverseLogicleTransform: Computes the inverse of the transform defined by the 'logicleTransform' function

Description

inverseLogicleTransform can be use to compute the inverse of the Logicle transformation. The parameters w, t, m, a for calculating the inverse are obtained from the 'trans' input passed to the 'inverseLogicleTransform' function. (The inverseLogicleTransform method makes use of the C++ implementation of the inverse logicle transform contributed by Wayne Moore et al.)

Usage

inverseLogicleTransform(transformationId, trans)

Arguments

transformationId

A name to assigned to the inverse transformation. Used by the transform routines.

trans

An object of class 'transform' created using the 'logicleTransform' function. The parameters w, t, m, a for calculating the inverse are obtained from the 'trans' input passed to the 'inverseLogicleTransform' function.

References

Parks D.R., Roederer M., Moore W.A.(2006) A new "logicle" display method avoids deceptive effects of logarithmic scaling for low signals and compensated data. CytometryA, 96(6):541-51.

See Also

logicleTransform

Examples

data(GvHD)
samp <- GvHD[[1]] 
logicle  <- logicleTransform(t = 10000, w = 0.5, m = 4.5 , a =0 ,"logicle")
## transform FL1-H parameter using logicle transformation
after <- transform(samp, `FL1-H` = logicle(`FL1-H`))

## Inverse transform the logicle transformed data to retrieve the original data
invLogicle <- inverseLogicleTransform(trans = logicle)
before <- transform (after,  `FL1-H`= invLogicle(`FL1-H`))