#' log transforms the expression matrix of a flowframe
#'
#' @param x flowframe to be transformed
#' @param notToTransform columns not to be transformed
#' @return \strong{flowframe} with log transformed expression matrix
#'
#' @examples
#' flowfile_path <- system.file("extdata", "B4_18_1.fcs",
#' package = "cyanoFilter",
#' mustWork = TRUE)
#' flowfile <- flowCore::read.FCS(flowfile_path, alter.names = TRUE,
#' transformation = FALSE, emptyValue = FALSE,
#' dataset = 1)
#' flowfile_nona <- cyanoFilter::noNA(x = flowfile)
#' flowfile_noneg <- cyanoFilter::noNeg(x = flowfile_nona)
#' lnTrans(x = flowfile_noneg, c('SSC.W', 'TIME'))
#'
#' @importFrom methods new
#' @export lnTrans
lnTrans <- function(x, notToTransform = c("SSC.W", "TIME")) {
exx <- cbind(log(flowCore::exprs(x)[, which(!(flowCore::colnames(x) %in%
notToTransform))]),
flowCore::exprs(x)[, which(flowCore::colnames(x) %in%
notToTransform)])
colnames(exx) <- flowCore::colnames(x)
paraa <- flowCore::parameters(x)
describe <- flowCore::keyword(x)
return(flowCore::flowFrame(exprs = exx, parameters = paraa,
description = describe))
}
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.