A user has the following dataframe and wants to select only particular labels such as ‘hesc’, or ‘bj fibroblast’.How to do that? Following is the data

To select rows which contains ‘hesc’, we can do the following

expr[expr$cell_type == "hesc", ]

To select rows having either ‘hesc’ or ‘bj fibroplast’, we can do the following

expr[expr$cell_type %in% c("hesc", "bj fibroblast"), ]

We can also use subset function to choose the rows as

subset(expr, cell_type == "hesc") subset(expr, cell_type %in% c("bj fibroblast", "hesc"))

We can also use filter function from dplyr library as

filter(expr, cell_type %in% c("bj fibroblast", "hesc"))