findCell: Find cells associated with a given gene list

In scfind: A search tool for single cell RNA-seq data by gene lists

Description

Calculates p-values of a log-likelihood of a list of genes to be associated with each cell type. Log-likelihood is based on gene expression values.

Usage

findCell(input = NULL, genelist = NULL)

findCell.SCESet(input, genelist)

## S4 method for signature 'list'
findCell(input = NULL, genelist = NULL)

Arguments

input	object of SingleCellExperiment class
genelist	column name in the colData slot of the object SingleCellExperiment containing the cell classification information

Value

a 'list' containing calculated gene index

Examples

library(SingleCellExperiment)
sce <- SingleCellExperiment(assays = list(normcounts = as.matrix(yan)), colData = ann)
# this is needed to calculate dropout rate for feature selection
# important: normcounts have the same zeros as raw counts (fpkm)
counts(sce) <- normcounts(sce)
logcounts(sce) <- log2(normcounts(sce) + 1)
# use gene names as feature symbols
rowData(sce)$feature_symbol <- rownames(sce)
isSpike(sce, 'ERCC') <- grepl('^ERCC-', rownames(sce))
# remove features with duplicated names
sce <- sce[!duplicated(rownames(sce)), ]
index <- buildCellIndex(sce)
res <- findCell(index, genelist = c('SOX6', 'SNAI3'))

scfind documentation built on April 28, 2020, 7:01 p.m.