Hi,
vec1<- letters
vec1[!grepl("b|r|x",alp)]
# [1] "a" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "s" "t"
"u"
#[20] "v" "w" "y" "z"
vec1[!vec1%in% c("b","r","x") ]
# [1] "a" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "s" "t"
"u"
#[20] "v" "w" "y" "z"
alp<-lapply(seq_along(vec1),function(i) vec1[i])
res<-alp[!grepl("b|r|x",alp)]
unlist(res)
# [1] "a" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "s" "t"
"u"
#[20] "v" "w" "y" "z"
unlist(alp[!alp%in%c("b","r","x")])
#[1] "a" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "s" "t"
"u"
#[20] "v" "w" "y" "z"
A.K.
>If I for example have a list (or vector) that contains all the letters in the
>alphabet.
>
>alp <- list("a","b","c",......................."z") this is of course not the
>exact code
>
>How can I remove multiple elements at one time without knowing their location
>in the list. Say I want to remove b,r,x?
>Same question if apl is a vector
>
>I have tried
>
>alp <- alp[-c("b","r","x")]
>
>this does not work
>
>Thanks,
>Johnny
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