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Added SAM/BAM support (closes #18)

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Waldir Leoncio 2021-09-03 12:50:11 +02:00
parent 15f2cbcf08
commit 0cfd13b006
4 changed files with 27 additions and 6 deletions
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14
R/greedyMix.R
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@ -1,9 +1,11 @@
#' @title Clustering of individuals
#' @param data data file
#' @param format Format of the data c("FASTA", "VCF" ,"SAM", or "GenePop")
#' @param format Format of the data c("FASTA", "VCF" ,"BAM", or "GenePop")
#' @param verbose if \code{TRUE}, prints extra output information
#' @importFrom utils read.delim
#' @importFrom vcfR read.vcfR
#' @references Samtools: a suite of programs for interacting
#' with high-throughput sequencing data. <http://www.htslib.org/>
#' @export
greedyMix <- function(data, format, verbose = TRUE) {
format <- tolower(format)
@ -12,8 +14,14 @@ greedyMix <- function(data, format, verbose = TRUE) {
} else if (format == "vcf") {
out <- vcfR::read.vcfR(data, verbose = verbose)
} else if (format == "sam") {
stop("SAM files not yet supported." )
# TODO #18: implement load_sam()
stop(
"SAM files not directly supported. ",
"Install the samtools software and execute ",
"'samtools view -b in_file.sam > out_file.bam' to convert to BAM ",
"and try running this function again with 'format=BAM'"
)
} else if (format == "bam") {
out <- Rsamtools::scanBam(data)
} else if (format == "genepop") {
# TODO #19: implement load_genepop()
stop("GenePop files not yet supported." )

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inst/ext/bam_example.bam Normal file
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6
man/greedyMix.Rd
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@ -9,10 +9,14 @@ greedyMix(data, format, verbose = TRUE)
\arguments{
\item{data}{data file}
\item{format}{Format of the data c("FASTA", "VCF" ,"SAM", or "GenePop")}
\item{format}{Format of the data c("FASTA", "VCF" ,"BAM", or "GenePop")}
\item{verbose}{if \code{TRUE}, prints extra output information}
}
\description{
Clustering of individuals
}
\references{
Samtools: a suite of programs for interacting
with high-throughput sequencing data. <http://www.htslib.org/>
}

13
tests/testthat/test-greedyMix.R
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@ -46,12 +46,21 @@ df_vcf <- greedyMix(
format = "VCF",
verbose = FALSE
)
# TODO #17: add example reading VCF
# TODO #18: add example reading SAM
df_bam <- greedyMix(
data = file.path(path_inst, "bam_example.bam"),
format = "BAM",
)
# TODO #19: add example reading Genpop
test_that("Files are imported correctly", {
expect_equal(dim(df_fasta), c(5, 99))
expect_equal(dim(df_vcf), c(variants = 2, fix_cols = 8, gt_cols = 3))
expect_error(
greedyMix(
data = paste(path_inst, "sam_example.sam", sep="/"),
format = "SAM",
)
)
expect_equal(length(df_bam[[1]]), 13)
})
context("Linkage")