similar to: incrementing for loop by 2

Dear List, I try to order the output of a table by the frequencies of the vector I am look at. The object I am looking at is a factor with a lot of levels that were named only once. Therefore it would be much easier to order the output by the frequencies of the levels. E.g. > levels(a) "a" "b" "c" "d" Preferred outcome: table(a) b c a d 10 5 1 1

Dear all, I have got a question for generating repeats of a vector's elements. Please don't hesitate to email me back and say that it is very easy although I can't find a method to solve it. If I have a n-vector b, whose elements are b[1], b[2], ..., b[n], how can I generate such a vector b[1], b[1], b[2], b[1], b[2], b[3], b[1], b[2], b[3], b[4], ......, b[1], b[2], ...,

hi I have vector test. It has 3 elements. I want to join the three into one vector. "Geneset=HSA04910_INSULIN_SIGNALING_PATHWAY-157- 20". how can i do it. > class(test) [1] "character" > test [1] "Geneset=HSA04910_INSULIN_SIGNALING_PATHWAY" "157" [3] "20" Ramya --

Hi Is it possible to use the rep command (or maybe some other "shortcut") to create a vector with the following format: 4 3 4 2 3 4 1 2 3 4 Any help is much appreciated. Thanks Jacob Jacob L van Wyk Department of Statistics University of Johannesburg, APK Box 524 Auckland Park 2006 South Africa Office Tel: +27 11 559 3080 Fax: +27 11 559 2832 [[alternative HTML version

I would like to know how to convert a string with characters to all uppercase or all lowercase? If anyone could let me know if there exists a function in R for the conversion, that will be very helpful. Regards, Suman [[alternative HTML version deleted]]

I have a vector of data (species names) interspersed with NA values and I want a function to "fill in the blanks", replacing NA values with whatever the last species name was. For example the vector: "A","B",NA,NA,"C",NA,NA,NA,NA,"D",NA,NA. should evaluate to: "A" "B" "B" "B" "C"

Hi there! I can't find any information about creating combinations with repetitions in R. The function combn() does create combinations, but _without_ repetitions. Here is what I need to do: svIter <- 1000 xx <- matrix(rnorm(m*n), c(m, n)) sequence <- seq(range(xx)[1], range(xx)[2], length.out = svIter^(1/q)) expand.grid(secuence, secuence, .../q times/..., secuence) That is,

Hey list! I have a csv-file with two variables: (Date,CMI) Date,CMI Jan-93,3.24 Feb-93,-2.56 . . . Dec-06, 8.25 When I want to plot this dataset, R is sorting the date in alphabetical order. Is there any way to tell R not to do it? I know it is probably an easy issue but I couldn't find a solution so far. I have seen so many tips already but can't apply it on my own dataset. Thank

I am looking for the most efficient way to replace all occurrences of NaN in a data frame with NA. I can do this with a double loop, but it seems that there should be a higher level and more efficient way. With is.na, I could use ifelse, but if.nan seems not to have similar capabilities. TIA, Jon Peck Jon K. Peck jkpeck@aya.yale.edu [[alternative HTML version deleted]]

Dear R experts,   I have a dataframe with 4 columns (variables). I want to redorder (or reposition) these columns on the basis of a value in its last row. e.g.   df1<-data.frame( v1= c(2,3,1,9,5), v2=c(8,5,12,4,11), v3=c(7,8,2,6,9), v4=c(1,4,6,3,6))    > df1    v1 v2 v3 v4 1  2  8  7  1 2  3  5  8  4 3  1 12  2  6 4  9  4  6  3 5  5 11  9  6 I wanto to get the order of df1 on the basis of

Hi - I'd like to have the area between 2 lines on a x-y plot be filled with grey, but I haven't had any luck using polygon or rect. (In reality, I'd like to do this for twice - once for a low group and once for a high group - and then I'd like to plot a set of data points for a 'normal' group together with these 2 grey areas.) Here's a simple example of the 2 lines:

Dear R users, I have a newbie-question that I couldn't resolve after reading through several pieces of documentation and searching the archive. I have a data.frame containing experimental data from a group experiment in psychology. Each line represents a single participant, but participants were assigned to groups of three or four persons. One variable indicates each participants'

Hi, I have a firewall running IPTABLES. I have tried to route sip traffic from my WAN(eth3) interface to a VLAN(eth2.2) interface, however the data will not route to the VLAN it keeps routing to the default interface(eth2). Does anyone have an idea as to what I need to look for? Regards Jennifer Botten ETECH Tel: +2787 150 5285 Fax: 086 638 2412 Mobile: +27 82

Hi everybody! I'm sure that I overlook something and feel quite stupid to ask, but I have not found an easy solution to the following problem: Take e.g. the Orthodont data from the nlme package: > head(Orthodont) Grouped Data: distance ~ age | Subject distance age Subject Sex 1 26.0 8 M01 Male 2 25.0 10 M01 Male 3 29.0 12 M01 Male 4 31.0 14 M01 Male

I am having the weirdest problems with this. when i run ./wbinfo -A userid%password, i get plaintext password auth failed and ./wbinfo -a userid%password, i get could not obtain winbind separator or domain name. i can't find anything wrong! -----Original Message----- From: Gareth Davies [mailto:gdavies@willowbrook.co.uk] Sent: Tuesday, December 10, 2002 11:19 AM To: Jennifer Fountain;

Dear all, I'm looking for a function that calls the inverse F-distribution. Something equivalent to FINV in matlab or excel. Does anyone know if such a function already exists for R? (I haven't been able to find one.) Thanks for any leads. Best, Jennifer

Hello, Researchers at Oregon State University are striving to conduct research to learn more about the free/open source software community landscape as it relates to older adults. We have identified you as a leader for a free/open source software community. If you?re interested, we will either do an in-person interview (if you are local to the Corvallis or Portland area), or an interview over the

Hi, I just compiled new release 2.5.6 rsync in solaris5.9 machines, and ran a rsync job,I got the following errors: rsync error: unexplained error (code 255) at main.c(620) Both source and destination servers are running 5.9, can you please tell me should I update anything in main.c file? Thanks, Jennifer

<Long Post, sorry!> Folks, I have a really nasty problem preventing me from migrating a bunch of NetWare 5 servers to Samba--attempts to copy large (> 2MB+) files to any samba share results in an error. To clarify what I mean by "error": 1. I attempt to copy, using explorer, a 2MB+ file to any samba share. 2. A 30 second or so pause occurs (copying this file to any other

Hello, i more and more become this messages in logs: Jul 6 20:43:56 ks3374456 dovecot: auth: Error: passwd-file(jean at proxy.silviosiefke.com,213.130.118.102): stat(/var/vmail/auth.d/proxy.silviosiefke.com/passwd) failed: No such file or directory Jul 6 21:35:32 ks3374456 dovecot: auth: Error: passwd-file(jennifer at proxy.silviosiefke.com,41.160.109.28):