WhichCells()

用来对Seurat object中的细胞进行筛选

WhichCells(object_name, expression = gene_name > a_cutoff)
WhichCells(object_name, expression = nCount_RNA > a_cutoff)
WhichCells(object_name, expression = nFeature_RNA > a_cutoff)

返回值：由Barcode组成的字符向量

> aa <- WhichCells(SRR9705086, expression = nCount_RNA > 10000)

> class(aa)
[1] "character"

> length(aa)
[1] 4093

> head(aa, 3)
[1] "AAACCTGAGCCACTAT-1" "AAACCTGCAGTCCTTC-1" "AAACCTGGTGTTTGGT-1"

WhichCells()常和subset()搭配使用，来提取细胞亚群