Collectives™ on Stack Overflow
Find centralized, trusted content and collaborate around the technologies you use most.
Learn more about Collectives
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Learn more about Teams
I'm trying to reverse-engineer the following code
paste("a", rep(1:4, each=4), 1:4, sep="")`
which gives the following result:
[1] "a11" "a12" "a13" "a14" "a21" "a22" "a23" "a24" "a31" "a32" "a33" "a34" "a41" "a42" "a43" "a44"
For reference, this code is from the Examples section of the LTRE{popbio} help file.
For my data, I need to repeat the following sequence 14 times: "a11 a12 a21 a22". When I try to modify the original code such that
paste("a", rep(1:2, each=14), 1:2, sep="")
I instead get
[1] "a11" "a12" "a11" "a12" "a11" "a12" "a11" "a12" "a11" "a12" "a11" "a12" "a11" "a12" "a21" "a22" "a21" "a22" "a21" "a22" "a21" "a22" "a21" "a22" "a21" "a22" "a21" "a22"`.
Technically these are the correct combos, but I need the sequence to be "a11, a12, a21, a22", "a11, a12, a21, a22", etc., not repeating "a11 a12" 7 times before switching to "a21 a22" 7 times. This seems like it should be simple but after trying all kinds of code modifications, I can't figure it out. Any suggestions would be appreciated.
rep(paste0("a", rep(1:2, each = 2), 1:2), 7)
#[1] "a11" "a12" "a21" "a22" "a11" "a12" "a21" "a22" "a11" "a12" "a21" "a22" "a11" "a12" "a21" "a22" "a11" "a12" "a21" "a22" "a11" "a12"
#[23] "a21" "a22" "a11" "a12" "a21" "a22"
paste0("a", rep(1:2,times = 7, each = 2), 1:2)
#[1] "a11" "a12" "a21" "a22" "a11" "a12" "a21" "a22" "a11" "a12" "a21" "a22" "a11"
#[14] "a12" "a21" "a22" "a11" "a12" "a21" "a22" "a11" "a12" "a21" "a22" "a11" "a12"
#[27] "a21" "a22"
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
