curvPeaks {flowStats} | R Documentation

## Parse curv1Filter output

### Description

Parse the output of `curv1Filter` and find modes and midpoints of the high-density regions. This function is considered to be internal.

### Usage

    curvPeaks(x, dat, borderQuant = 0.01, n = 201, from, to, densities=NULL)

### Arguments

`x` | A `multipleFilterResult` produced by a `curv1Filter` operation.
`dat` | The corresponding `flowFrame`.
`borderQuant` | A numeric in `[0,1]` giving the extreme quantiles for which high-density regions are ignored.
`n, from, to` | Arguments are passed on to `density`.
`densities` | The optional y values of the density estimate computed for the respective data.

### Value

A list with items

`peaks` | x and y locations of the modes of the regions in the density estimates.
`regions` | the left and right margins of the regions.
`midpoints` | the mean of `regions`.
`regPoints` | x and y locations of the outline of the significant density regions.
`densFuns` | an approximation function of the density estimate

### Author(s)

Florian Hahne

### See Also

`landmarkMatrix`

### Examples

    library(flowCore)
    data(GvHD)
    tmp <- filter(GvHD[[10]], curv1Filter("FSC-H"))
    res <-  flowStats:::curvPeaks(tmp, exprs(GvHD[[10]])[, "FSC-H"])

[Package flowStats version 4.4.0 Index]