RnBeadSet-class: RnBeadSet Class

Description Usage Arguments Details Value Slots Methods and Functions Author(s)

Description

Stores the preprocessed information from HumanMethylation experiments

Usage

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RnBeadSet(
  pheno,
  probes,
  betas,
  p.values = NULL,
  bead.counts = NULL,
  qc = NULL,
  platform = "450k",
  summarize.regions = TRUE,
  region.types = rnb.region.types.for.analysis("hg19"),
  useff = rnb.getOption("disk.dump.big.matrices")
)

Arguments

pheno

Phenotypic data.

probes

character vector of Infinium(R) probe identifiers

betas

matrix or ff_matrix of beta values. If probes are missing should contain Infinium probe identifiers as row names.

p.values

matrix or ff_matrix of detection p-values.

bead.counts

...

qc

...

platform

character singleton specifying the microarray platform: "450k" corresponds to HumanMethylation450 microarray, and "27k" stands for HumanMethylation27.

summarize.regions

...

region.types

A character vector specifying the region types, for which the methylation infromation will be summarized.

useff

If TRUE the data matrices will be stored as ff objects

Details

There are multiple ways to create an object of type RnBeadSet:

Loading from files

Dataset can be loaded from text or binary files. See the function rnb.execute.import for more details.

Downloading from GEO

See the function rnb.read.geo for details.

Converting from MethyLumiSet

...

Value

an object of class RnBeadSet

Slots

pval.sites

matrix of detection p-values with the same dimensions as betas, or NULL if the detection p-values are not available.

pval.regions

list of methylation matrix objects, one per available region type. Every row in a matrix corresponds to a methylation site, and every column - to a sample.

covg.sites

matrix of bead counts per probe with the same dimensions as betas, or NULL if this data are not available.

qc

Quality control probe information in the form of a list of two elements - "Cy3" and "Cy5", storing intensities of probes on the green and red channels, respectively. This slot's value is NULL if no control probe information is available.

Methods and Functions

samples

Gets the identifiers of all samples in the dataset.

pheno

Gets the phenotypic and processing data of the dataset.

meth

Gets the matrix of methylation beta-values of the dataset.

dpval

Gets the matrix of detection p-values of the dataset.

covg

Gets the matrix of bead counts of the dataset.

qc

Gets the intensities of the quality control probes.

remove.sites

Removes probes from the dataset.

remove.samples

Removes samples from the dataset.

combine

Combines two datasets.

Author(s)

Pavlo Lutsik


RnBeads documentation built on March 3, 2021, 2 a.m.