Hi. How to extract a column from the list.. I will be thanks full..? Sent from Yahoo Mail on Android
Extracting a particular column from list
5 messages · Faheem Jan, Eric Berger, Rui Barradas +2 more
u <- list(a=1:5, b=letters[1:3]) u
# $a # [1] 1 2 3 4 5 # # $b # [1] "a" "b" "c"
u[["a"]]
[1] 1 2 3 4 5 On Thu, Jan 16, 2020 at 1:04 PM Faheem Jan via R-help <r-help at r-project.org> wrote:
Hi. How to extract a column from the list.. I will be thanks full..
Sent from Yahoo Mail on Android
[[alternative HTML version deleted]]
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Hello, What column and what list? Please post a reproducible example, see the link at the bottom of this mail and [1], [2], [3]. [1] https://cran.r-project.org/web/packages/reprex/index.html [2] https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example [3] https://stackoverflow.com/help/mcve Hope this helps, Rui Barradas ?s 11:02 de 16/01/20, Faheem Jan via R-help escreveu:
Hi. How to extract a column from the list.. I will be thanks full.. Sent from Yahoo Mail on Android [[alternative HTML version deleted]]
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
On 17/01/20 1:55 am, Rui Barradas wrote:
Hello, What column and what list? Please post a reproducible example, see the link at the bottom of this mail and? [1], [2], [3]. [1] https://cran.r-project.org/web/packages/reprex/index.html [2] https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example [3] https://stackoverflow.com/help/mcve Hope this helps,
The OP should note that lists in general *do not have* columns. Data frames (which are a special case of lists) do have columns. Lists have "*entries*" or "components". It is important to get your terminology right and to understand the concepts that you are dealing with. Slap-dash hammer and hope is a recipe for disaster, especially in R. cheers, Rolf Turner
Honorary Research Fellow Department of Statistics University of Auckland Phone: +64-9-373-7599 ext. 88276
I nominate the last sentence of Rolf's comment as a fortune.
On Thu, Jan 16, 2020 at 3:48 PM Rolf Turner <r.turner at auckland.ac.nz> wrote:
On 17/01/20 1:55 am, Rui Barradas wrote:
Hello, What column and what list? Please post a reproducible example, see the link at the bottom of this mail and [1], [2], [3]. [1] https://cran.r-project.org/web/packages/reprex/index.html [2]
[3] https://stackoverflow.com/help/mcve Hope this helps,
The OP should note that lists in general *do not have* columns. Data frames (which are a special case of lists) do have columns. Lists have "*entries*" or "components". It is important to get your terminology right and to understand the concepts that you are dealing with. Slap-dash hammer and hope is a recipe for disaster, especially in R. cheers, Rolf Turner -- Honorary Research Fellow Department of Statistics University of Auckland Phone: +64-9-373-7599 ext. 88276
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.