Hi Jorge,
Thanks . Some how i have messed up mu lapply function.Worked upon restart.
Tanvir Ahamed
Göteborg, Sweden | [email protected]
From: Jorge I Velez <[email protected]>
To: Mohammad Tanvir Ahamed <[email protected]>
Cc: R-help Mailing List <[email protected]>
Sent: Tuesday, 8 March 2016, 3:04
Subject: Re: [R] Extract every 2 element for a list which are not equal in
length
Dear Mohammad,What's wrong with the result?Best,Jorge.-
On Monday, March 7, 2016, Mohammad Tanvir Ahamed via R-help
<[email protected]> wrote:
Hi,
a <- c(1:5)b <- c(1:3)
c <- 1
d <- 5
e <- list(a,b,c,d)
# To extract every 1st element
lapply(e,"[[",1)
## Out-put
[[1]]
[1] 1
[[2]]
[1] 1
[[3]]
[1] 1
[[4]]
[1] 5
#To extract every 2nd element (Need help in this case)
lapply(e,"[[",2)
## Expected outcome
[[1]]
[1] 2
[[2]]
[1] 2
[[3]]
[1] NA
[[4]]
[1] NA
Any help will be appreciated . Thanks
Tanvir Ahamed
Göteborg, Sweden | [email protected]
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