R: string vector, finding values of indeices smaller than a certain number -


could kindly me error message below?

list <- c("apple","bee","cat","dog","egg","frog","goat","hippo","iguana")  list[1:5] # [1] "apple" "bee"    "cat"    "dog"    "egg"

however,

list[<5] # error: unexpected '<' in "list[<"

thank you.

we need either numeric index (in op's first example) or logical index subset 'list'. create logical index, can compare sequence of 'list' elements index 5.

seq_along(list)<5 #[1]  true  true  true  true false false false false false

and using index, can elements corresponds true values

list[seq_along(list)<5] #[1] "apple" "bee"   "cat"   "dog"

regarding error message, if type

<5

on console

error: unexpected '<' in "<"

so, needs value on lhs of <


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