select top variable genes

Source: R/Utilities.R

subset a matrix by top variable genes

top_var(expression.matrix = NULL, ngenes = 1500)

Arguments

expression.matrix

is a matrix with genes in rows and cells in columns
ngenes

number of genes used for clustering calculations.

Value

a subsetted expression matrix with the top n most variable genes

Examples

day2 <- day_2_cardio_cell_sample
mixedpop1 <-new_scGPS_object(ExpressionMatrix = day2$dat2_counts, 
    GeneMetadata = day2$dat2geneInfo, CellMetadata = day2$dat2_clusters)
SortedExprsMat <-top_var(expression.matrix=assay(mixedpop1))