removeLowDensSections {flowCut} | R Documentation

## Remove low density regions of a flowFrame.

### Description

Remove low density regions of a flowFrame.

### Usage

        removeLowDensSections (f, Time.loc, Segment=500, LowDensityRemoval=0.1, Verbose=FALSE)

### Arguments

`f` | A single flowFrame to be processed.
`Time.loc` | An positive interger value for the location of the time channel.
`Segment` | An integer value that specifies the number of events in each segment to be analyzed. A single segment is defaulted to contain 500 events.
`LowDensityRemoval` | An numeric value between 0 and 1 that specifies the proportion cut-off of the low density region. All events with less density than LowDensityRemoval will be removed. The default is 0.1.
`Verbose` | A logical value that dictates if computational information is printed while the code is running. The default is FALSE.

### Details

removeLowDensSections removes low density regions of a flowFlame. The flowFrame must have a time channel.

### Value

A list containing two elements. The first element, $frame, is the flowFrame file returned after removeLowDensSections has removed the low density sections. The second element, $rem.ind, is a vector containing indices of events being removed.

### Author(s)

Maintainer: Justin Meskas justinmeskas@gmail.com, Sherrie Wang swang@bccrc.ca

### Examples

    data(flowCutData)
    res_lowDens <- removeLowDensSections(flowCutData[[1]], LowDensityRemoval=0.1, Time.loc=which(parameters(flowCutData[[1]])$name == "Time"))
    library(flowDensity)
    plotDens(flowCutData[[1]], c("Time","FL1-H"))
    points(exprs(flowCutData[[1]])[res_lowDens$rem.ind, c("Time","FL1-H")],
        pch=".", col="grey")

[Package flowCut version 1.4.0 Index]