inverseLogicleTransform {flowCore} | R Documentation |
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.)
inverseLogicleTransform(trans,transformationId,...)
trans |
An object of class 'transform' created using the 'logicleTransform' function or class 'transformList' created by 'estimateLogicle'. The parameters w, t, m, a for calculating the inverse are obtained from the 'trans' input passed to the 'inverseLogicleTransform' function. |
transformationId |
A name to assigned to the inverse transformation. Used by the transform routines. |
... |
not used. |
Wayne Moore, N. Gopalakrishnan
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.
data(GvHD) samp <- GvHD[[1]] #########inverse the transform object############### logicle <- logicleTransform(t = 10000, w = 0.5, m = 4.5 , a =0 ,"logicle") ## transform FL1-H parameter using logicle transformation after <- transform(samp, transformList('FL1-H', logicle)) ## Inverse transform the logicle transformed data to retrieve the original data invLogicle <- inverseLogicleTransform(trans = logicle) before <- transform (after, transformList('FL1-H', invLogicle)) #########inverse the transformList object############### translist <- estimateLogicle(samp, c("FL1-H", "FL2-H")) after <- transform(samp, translist) ## Inverse invLogicle <- inverseLogicleTransform(translist) before <- transform (after, invLogicle)