mut_context: Retrieve context of base substitutions

In MutationalPatterns: Comprehensive genome-wide analysis of mutational processes

Description

A function to extract the bases 3' upstream and 5' downstream of the base substitutions from the reference genome. The user an choose how many bases are extracted.

Usage

mut_context(vcf, ref_genome, extension = 1)

Arguments

vcf	A Granges object
ref_genome	Reference genome
extension	The number of bases, that's extracted upstream and downstream of the base substitutions. (Default: 1).

Value

Character vector with the context of the base substitutions

See Also

read_vcfs_as_granges,

Examples

## See the 'read_vcfs_as_granges()' example for how we obtained the
## following data:
vcfs <- readRDS(system.file("states/read_vcfs_as_granges_output.rds",
  package = "MutationalPatterns"
))

## Load the corresponding reference genome.
ref_genome <- "BSgenome.Hsapiens.UCSC.hg19"
library(ref_genome, character.only = TRUE)

## Get the standard context
mut_context <- mut_context(vcfs[[1]], ref_genome)

## Get larger context
mut_context_larger <- mut_context(vcfs[[1]], ref_genome, extension = 2)

MutationalPatterns documentation built on Nov. 14, 2020, 2:03 a.m.