ssd-methods {ChIPQC} | R Documentation

## Retrieve SSD (squared sum of deviations) values of peak coverage

### Description

Retrieve SSD (squared sum of deviations) values of peak coverage density.

### Methods

`signature(object = "ChIPQCexperiment")`

  Retrieve a `vector` of SSD values, one for each sample in an experiment.

`signature(object = "list")`

  Retrieve a `vector` of SSD values, one for each sample in a list of ChIPQCsample objects.

`signature(object = "ChIPQCsample")`

  Retrieve the SSD (squared sum of deviations) for a sample, computed from the standard deviation of the `coveragehistogram`.

### Note

uses the SSD calculation from the `chipseq` package.

### Author(s)

Thomas Carroll and Rory Stark

### See Also

ChIPQC-package, ChIPQCexperiment, ChIPQCsample

### Examples

    data(example_QCexperiment)
    ssd(exampleExp)
    ssd(QCsample(exampleExp,1))

[Package ChIPQC version 1.23.1 Index]