bed-class: Class bed

Description

A reference class for storing a pointer to a mapped version of a bed file.

bed(bedfile)

bedfile

Path to file with extension ".bed" to read. You need the corresponding ".bim" and ".fam" in the same directory.

A bed object has many field:

$address: address of the external pointer containing the underlying C++ object, to be used internally as a XPtr<bed> in C++ code
$extptr: use $address instead
$bedfile: path to the bed file
$bimfile: path to the corresponding bim file
$famfile: path to the corresponding fam file
$prefix: path without extension
$nrow: number of samples in the bed file
$ncol: number of variants in the bed file
$map: data frame read from $bimfile
$fam: data frame read from $famfile
$.map: use $map instead
$.fam: use $fam instead

# NOT RUN {
bedfile <- system.file("extdata", "example-missing.bed", package = "bigsnpr")
(obj.bed <- bed(bedfile))

# }

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