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1 #!/usr/bin/env Rscript
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2
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3 # A command-line interface to sleuth for use with Galaxy
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4 # This script modified from
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5 # https://github.com/pachterlab/bears_analyses/blob/master/sleuth.R
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6
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7 # setup R error handling to go to stderr
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8 options( show.error.messages=F, error = function () { cat( geterrmessage(), file=stderr() ); q( "no", 1, F ) } )
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9
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10 # we need that to not crash galaxy with an UTF8 error on German LC settings.
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11 loc <- Sys.setlocale("LC_MESSAGES", "en_US.UTF-8")
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12
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13 library("getopt")
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14 library("tools")
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15 options(stringAsFactors = FALSE, useFancyQuotes = FALSE)
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16 args <- commandArgs(trailingOnly = TRUE)
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17
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18 # get options, using the spec as defined by the enclosed list.
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19 spec <- matrix(c(
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20 "quiet", "q", 0, "logical",
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21 "help", "h", 0, "logical",
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22 "indir", "i", 1, "character",
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23 "metadata", "m", 1, "character",
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24 "full_model", "f", 1, "character",
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25 "reduced_model", "r", 1, "character",
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26 "gene_anno_name", "a", 2, "character"
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27 ), byrow=TRUE, ncol=4)
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28 opt <- getopt(spec)
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29
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30 # if help was asked for print a friendly message
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31 # and exit with a non-zero error code
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32 if (!is.null(opt$help)) {
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33 cat(getopt(spec, usage=TRUE))
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34 q(status=1)
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35 }
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36
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37 # enforce the following required arguments
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38 if (is.null(opt$indir)) {
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39 cat("'indir' is required\n")
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40 q(status=1)
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41 }
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42 if (is.null(opt$metadata)) {
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43 cat("'metadata' is required\n")
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44 q(status=1)
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45 }
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46 if (is.null(opt$full_model)) {
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47 cat("'full_model' is required\n")
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48 q(status=1)
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49 }
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50 if (is.null(opt$reduced_model)) {
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51 cat("'reduced_model' is required\n")
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52 q(status=1)
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53 }
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54
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55 verbose <- if (is.null(opt$quiet)) {
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56 TRUE
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57 } else {
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58 FALSE
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59 }
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60
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61 suppressPackageStartupMessages({
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62 library("sleuth")
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63 library("biomaRt")
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64 })
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65
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66 s2c <- read.table(file.path(opt$metadata), header = TRUE, stringsAsFactors=FALSE)
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67 run_dirs <- s2c$sample
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68 kal_dirs <- c()
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69
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70 for (dir in run_dirs) {
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71 kal_dirs <- c(kal_dirs, file.path(opt$indir, dir, "kallisto"))
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72 }
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73
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74 s2c <- dplyr::mutate(s2c, path = kal_dirs)
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75
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76 if (!is.null(opt$gene_anno_name)) {
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77 mart <- biomaRt::useMart(biomart = "ensembl", dataset = opt$gene_anno_name)
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78 t2g <- biomaRt::getBM(attributes = c("ensembl_transcript_id", "ensembl_gene_id", "external_gene_name"), mart = mart)
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79 t2g <- dplyr::rename(t2g, target_id = ensembl_transcript_id, ens_gene = ensembl_gene_id, ext_gene = external_gene_name)
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80 so <- sleuth_prep(s2c, as.formula(opt$full_model), target_mapping = t2g, read_bootstrap_tpm=TRUE, extra_bootstrap_summary=TRUE)
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81 } else {
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82 so <- sleuth_prep(s2c, as.formula(opt$full_model), read_bootstrap_tpm=TRUE, extra_bootstrap_summary=TRUE)
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83 }
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84 so <- sleuth_fit(so, as.formula(opt$full_model), "full")
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85 so <- sleuth_fit(so, as.formula(opt$reduced_model), "reduced")
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86 so <- sleuth_lrt(so, "reduced", "full")
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87 sleuth_deploy(so, opt$indir)
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