In C3BI-pasteur-fr/UTechSCB-SCHNAPPs: Single Cell Shiny Application for Analysing Single Cell Transcriptomics Data

df

cat(file = stderr(), "test")

knitr::opts_chunk$set(
  message = FALSE,
  warning = FALSE,
  echo = FALSE,
  include = TRUE
)
# rm(list=ls())
# library(cellrangerRkit)
# packageVersion("cellrangerRkit")
# library(SCORPIUS)
library(ggplot2)
library(dplyr)
library(SingleCellExperiment)

suppressMessages(library(biomaRt))

dfd

# function to retrieve annotation from biomart
# used with different versions to ensure the correct ids are used.
# version = 0 => current
library(ggplot2)
library(dplyr)
library(SingleCellExperiment)
suppressMessages(library(biomaRt))
require(Seurat)

getFeatureDataSummary <- function(ver = 0, dataset = "mmusculus_gene_ensembl", gbmMat = gbmMat) {
  if (ver > 0) {
    ensemblOld <- useEnsembl(biomart = "ensembl", version = ver, dataset = dataset)
  } else {
    ensemblOld <- useEnsembl(biomart = "ensembl", dataset = dataset)
  }

  if (!startsWith(rownames(gbmMat)[1], "ENS")) {
    vals <- rownames(gbmMat)
    filters <- "external_gene_name"
  } else {
    vals <- rownames(gbmMat)
    filters <- "ensembl_gene_id"
  }
  featureData <- tryCatch(
    getBM(
      attributes = c(
        "ensembl_gene_id",
        "external_gene_name",
        "description",
        "chromosome_name",
        "genomic_coding_start",
        "genomic_coding_end",
        "gene_biotype"
      ),
      filters = filters,
      values = vals,
      mart = ensemblOld
    ),
    error = function(cond) {
      return("biomart connection error")
    },
    warning = function(cond) {
      return("Biomart warning")
    }
  )
  featureData$genomic_coding_start[is.na(featureData$genomic_coding_start)] <- 0
  featureData$genomic_coding_end[is.na(featureData$genomic_coding_end)] <- 0
  featureData_summary <- featureData %>%
    group_by(ensembl_gene_id, external_gene_name, description, chromosome_name, gene_biotype) %>%
    summarize(
      min_genomic_coding_start = min(genomic_coding_start, na.rm = TRUE),
      max_genomic_coding_end = max(genomic_coding_end, na.rm = TRUE)
    )
  featureData_summary <- as.data.frame(featureData_summary)
  rownames(featureData_summary) <- featureData_summary$ensembl_gene_id
  featureData_summary <- featureData_summary[, -1]

  colnames(featureData_summary) <- c(
    "Associated.Gene.Name",
    "Description",
    "Chromosome.Name",
    "Gene.Biotype",
    "Gene.Start..bp.",
    "Gene.End..bp."
  )
  featureData_summary <- featureData_summary[, c(
    "Description",
    "Chromosome.Name",
    "Gene.Start..bp.",
    "Gene.End..bp.",
    "Associated.Gene.Name",
    "Gene.Biotype"
  )]
  return(featureData_summary)
}

read10X <- function(run, sampleName = 1) {
  # run = dirname(pipestance_paths[1])
  if (!grepl("\\/$", run)) {
    run <- paste(run, .Platform$file.sep, sep = "")
  }
  barcode.loc <- paste0(run, "barcodes.tsv")
  gene.loc <- paste0(run, "features.tsv")
  matrix.loc <- paste0(run, "matrix.mtx")
  if (!file.exists(barcode.loc)) {
    stop("Barcode file missing")
  }
  if (!file.exists(gene.loc)) {
    stop("Gene name file missing")
  }
  if (!file.exists(matrix.loc)) {
    stop("Expression matrix file missing")
  }
  data <- readMM(file = matrix.loc)
  cell.names <- readLines(barcode.loc)
  gene.names <- read.csv2(gene.loc, header = FALSE,sep = "\t", stringsAsFactors = F)
  rownames(data) = gene.names[,1]
  # rownames(x = data) <- make.unique(names = as.character(x = sapply(
  #   X = gene.names,
  #   FUN = ExtractField, field = 1, delim = "\\t"
  # )))
  cell.names <- paste0(sub("(.*)-1", "\\1", cell.names), "-", sampleName)

  colnames(x = data) <- cell.names
  data
}

path = "/Volumes/collanto/scRNAseq/bernd/scCourse2019/HN00106004_10x_RawData_Outs/HYK53CCXY/fastq_path/HYK53CCXY/"
runs = dir(path = path, pattern = "cnt$", full.names = TRUE, recursive = FALSE)
outfile = "scCourse2019.RData"
run = runs[1]
library(Matrix)
# alldata = new("dgTMatrix")
run = runs[1]
sampleName = basename(run)
run = paste0(run, "/outs/filtered_feature_bc_matrix/")

alldata = read10X(run, sampleName)
runs = runs[-1]
for (run in runs) {
  print(run)
  sampleName = basename(run)
  run = paste0(run, "/outs/filtered_feature_bc_matrix/")

  alldata = cbind(alldata, read10X(run, sampleName))
}
dim(alldata)

listEnsembl()$version
featureData_summary93 <- getFeatureDataSummary(ver = 93, dataset = "hsapiens_gene_ensembl", gbmMat = alldata)

featureData_summary = featureData_summary93
length(rownames(alldata)[!rownames(alldata) %in% rownames(featureData_summary) ])

featuredata <- featureData_summary[rownames(alldata), ]
pd = data.frame(barcodes = sub("(.*)-(.*)", "\\1", colnames(alldata)),
                sampleNames = sub(".*-(.*)", "\\1", colnames(alldata))
)
pd$barcodes = as.character(pd$barcodes)
pd
counts <- as(alldata, "CsparseMatrix")
scEx = SingleCellExperiment(assay = list(counts=counts),
                            colData = pd,
                            rowData = featuredata)

save(file = outfile, list = c("scEx"))

for (samp in levels(colData(scEx)[,"sampleNames"])) {
  scExSub = scEx[,colData(scEx)[,"sampleNames"] == samp]
  save(file = paste0(samp,".RData"), list = c("scExSub"))
}

C3BI-pasteur-fr/UTechSCB-SCHNAPPs documentation built on Jan. 12, 2025, 1:16 p.m.