[R] Rotation of parallel lines

Dear list, Consider these two parallel segments in a plot. plot(c(1, 6), c(2, 2), type="n", xlim=c(0, 7), ylim=c(-2, 6)) segments(1, 1, 6, 1) segments(1, 3, 6, 3) How can I rotate the two lines together by a defined angle? Thank you all in advance. Best, Antonio ___

[R] Differences between glmmPQL and lmer and AIC calculation

mething remained unclear or if you have any question about details, please let me know. I would really appreciate any kind of help referring to my problem(s). Many thanks in advance! All the best, Tonio *Alain F. Zuur, Elena N. Ieno, Neil J. Walker, Anatoly A. Saveliev, Graham M. Smith. (2

Re: [R] Toggle cASE

ay fly into JFK or laGuardia" chartr("a-zA-Z", "A-Za-z", txt2) Cheers. Am 05.12.2011 08:11, schrieb Tonio: > Hello R-help list, >  > I am looking for way to toggle the case of the characters like a flip-flop; > that is from ''Hello'' to &q

[R] Toggle cASE

Hello R-help list,   I am looking for way to toggle the case of the characters like a flip-flop; that is from ''Hello'' to "hELLO" or vice versa.   I know that there are a number of functions like casefold, tolower, toupper, etc. but these functions change the case in an uniform way.   Thanks in