R/load.R

In tinyheero/tinyutils: Utility Functions to Assist With Data Analysis

#' Load a Matrix
#'
#' This function loads a file as a matrix. It assumes that the first column
#' contains the rownames and the subsequent columns are the sample identifiers.
#' Any rows with duplicated row names will be dropped with the first one being
#' kepted.
#'
#' @param infile Path to the input file
#' @param ... Parameters to pass into \code{data.table::fread()}
#' @return A matrix of the infile
#' @export
load_mat <- function(infile, ...){
	in.dt <- data.table::fread(infile, header = TRUE, ...)
	in.dt <- in.dt[!duplicated(in.dt[, 1]), ]
	in.mat <- as.matrix(in.dt[, -1, with = FALSE])
	rownames(in.mat) <- unlist(in.dt[, 1, with = FALSE])
	in.mat
}