10X ATAC-seq basic quality control
Kayla Jackson and A. Sina Booeshaghi
2024-11-23
Source:vignettes/vig13_10xatac.Rmd
vig13_10xatac.RmdIntroduction
The data in this vignette is shipped with the cellatlas
repository. The count matrix and metadata are provided in the
cellatlas/examples folder as an AnnData
object. We will begin by loading the object and converting it to a
SingleCellExperiment object.
library(stringr)
library(DropletUtils)
library(Matrix)
library(SpatialExperiment)
library(SpatialFeatureExperiment)
library(scater)
library(scuttle)
library(Voyager)
library(ggplot2)
theme_set(theme_bw())
if (!file.exists("10xatac.rds"))
download.file("https://github.com/pachterlab/voyager/raw/documentation-devel/vignettes/10xatac.rds", destfile = "10xatac.rds")
sce <- readRDS("10xatac.rds")
sce <- addPerCellQCMetrics(sce)
names(colData(sce))
#> [1] "sum" "detected" "total"
plotColData(sce, "sum") +
plotColData(sce, "detected") 
plotColData(sce, x = "sum", y = "detected", bins = 100) +
scale_fill_distiller(palette = "Blues", direction = 1)
#> Scale for fill is already present.
#> Adding another scale for fill, which will replace the existing scale.
sce <- sce[, which(sce$total > 0)]
sce <- sce[rowSums(counts(sce)) > 0,]
sce
#> class: SingleCellExperiment
#> dim: 209 166
#> metadata(0):
#> assays(1): counts
#> rownames(209): 1:9410718-9410885 1:14968574-14969617 ...
#> X:119775524-119775794 X:154317937-154318131
#> rowData names(0):
#> colnames(166): AAACTCGCATTCTCGC AAAGGGCGTTGGCTTA ... TTGTCTACAGGTCCTG
#> TTTGTGTCATCGTACA
#> colData names(3): sum detected total
#> reducedDimNames(0):
#> mainExpName: NULL
#> altExpNames(0):
sessionInfo()
#> R version 4.4.2 (2024-10-31)
#> Platform: x86_64-pc-linux-gnu
#> Running under: Ubuntu 22.04.5 LTS
#>
#> Matrix products: default
#> BLAS: /usr/lib/x86_64-linux-gnu/openblas-pthread/libblas.so.3
#> LAPACK: /usr/lib/x86_64-linux-gnu/openblas-pthread/libopenblasp-r0.3.20.so; LAPACK version 3.10.0
#>
#> locale:
#> [1] LC_CTYPE=C.UTF-8 LC_NUMERIC=C LC_TIME=C.UTF-8
#> [4] LC_COLLATE=C.UTF-8 LC_MONETARY=C.UTF-8 LC_MESSAGES=C.UTF-8
#> [7] LC_PAPER=C.UTF-8 LC_NAME=C LC_ADDRESS=C
#> [10] LC_TELEPHONE=C LC_MEASUREMENT=C.UTF-8 LC_IDENTIFICATION=C
#>
#> time zone: UTC
#> tzcode source: system (glibc)
#>
#> attached base packages:
#> [1] stats4 stats graphics grDevices utils datasets methods
#> [8] base
#>
#> other attached packages:
#> [1] Voyager_1.8.1 scater_1.34.0
#> [3] ggplot2_3.5.1 scuttle_1.16.0
#> [5] SpatialFeatureExperiment_1.9.4 SpatialExperiment_1.16.0
#> [7] Matrix_1.7-1 DropletUtils_1.26.0
#> [9] SingleCellExperiment_1.28.1 SummarizedExperiment_1.36.0
#> [11] Biobase_2.66.0 GenomicRanges_1.58.0
#> [13] GenomeInfoDb_1.42.0 IRanges_2.40.0
#> [15] S4Vectors_0.44.0 BiocGenerics_0.52.0
#> [17] MatrixGenerics_1.18.0 matrixStats_1.4.1
#> [19] stringr_1.5.1
#>
#> loaded via a namespace (and not attached):
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#> [3] wk_0.9.4 magrittr_2.0.3
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#> [17] terra_1.7-83 htmltools_0.5.8.1
#> [19] S4Arrays_1.6.0 BiocNeighbors_2.0.0
#> [21] Rhdf5lib_1.28.0 s2_1.1.7
#> [23] SparseArray_1.6.0 rhdf5_2.50.0
#> [25] LearnBayes_2.15.1 sass_0.4.9
#> [27] spData_2.3.3 KernSmooth_2.23-24
#> [29] bslib_0.8.0 htmlwidgets_1.6.4
#> [31] desc_1.4.3 sandwich_3.1-1
#> [33] zoo_1.8-12 cachem_1.1.0
#> [35] igraph_2.1.1 lifecycle_1.0.4
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