r programming list.files with for than one file format -

i don't think can done, still, not hurt ask:

for example can see .csv , .rda files in working dir 1 command. i.e. can these 2 commands combined

list.files(pattern=".rda") list.files(pattern=".csv")

is best way:

a = list.files(pattern=".rda") b = list.files(pattern=".csv") print(c(a,b))

from ?list.files

pattern
optional regular expression. file names match regular expression returned.

you may use regex.

list.files(pattern="\\.(rda|csv)")

use end of line anchor if necessary.

list.files(pattern="\\.(rda|csv)$")

Dil