similar to: Extract some character from a character vector of length 1

Dear R-users! I am using R 1.7.0, under Windows XP. Having some hospital discharge data (admission date and discharge date for each patient), I want to get the number of patients in the hospital on a given date. My data look like (simple example): > x <- data.frame(patid=c("pat1", "pat2"), adm.date = c("15.03.2002", "16.03.2002"),

Hi, I'm fairly new to R but I have a large dataset (300000 obs) containing patient material. Some patients came 2-9 times during the three year observation period. The patients are identified by a unique idnr, the sessions can be distinguished using the session date. How can I recode the date of the session to a session id (1-9). This would be necessary to obtain information and do some

How can I delete both rows and columns that do not meet a particular cut off value. Example: > d <- rbind(c(0, 1, 6, 4), + c(2, 5, 7, 5), + c(3, 6, 1, 6), + c(4, 4, 4, 4)) > f <- as.matrix(d) > f [,1] [,2] [,3] [,4] [1,] 0 1 6 4 [2,] 2 5 7 5 [3,] 3 6 1 6 [4,] 4 4 4 4 I would like to delete all

Dear R-helper, Please suggest some methods for my question below. We measured the amount of protein A in patient blood in pre-treatment and post-treatment condition from 32 patients. -------------------------------------------- Pre-treatment Post-treatment Pat1 25 28 Pat2 19 15 Pat3 94

Hi all. I've being reading posts from the list since yesterday and I feel this question was answered a lot time ago, but the list archives are a mess (yet). I hope some one is willing to help me out. I want to set up this: caller ----- PSTN ---- (SOMETHING1) ------ VoIP --------- (SOMETHING2) ---- PSTN I think this must be a very basic architecture, but I'm not sure wat SOMETHING1

I'm a newbie for R lang. And I recently came across the "Recycling Rule" when adding two vectors of unequal length. I learned from this tutor [ http://www.r-tutor.com/r-introduction/vector/vector-arithmetics ] that: """""" If two vectors are of unequal length, the shorter one will be recycled in order to match the longer vector. For example, the

Hello, In a couple of Asterisks, after type "sip show channels" we have a lot of these: IP_PEER dst_number something 00102/00103 unkn No (d) Rx: BYE IP_PEER dst_number2 something2 00102/00103 unkn No (d) Rx: BYE We are using ASterisk 1.2.x When I say "a lot" I mean more than 180, more than 230, etc. Is it normal? How we can remove it? Thank you very much, --

Hi, when one does "Set(CDR(var)=value)" in dialplan, the value is only set for one record in the cdr table, but not the linked ones (the ones with the same linkedid). E.g. if you do something like same => n, Set(CDR(var)=value) same => n,Dial(Local/something&Local/something2) like only the original CDR record with have "var" set to "value", but the

Hello, Does samba support the use of S4U? What do we need to configure in SAMBA or krb5 to support getting a ticket obtained by S4U. We are using 3.0.25 and krb5-1.4.1 We are getting the following error: decode_pac_data: Name in PAC [username@something1.something2.realmname] does not match principal name in ticket The ticket could be different than the PAC name because the

Without recycling you would get: u <- c(10, 20, 30) u + 1 #[1] 11 20 30 which would be pretty inconvenient. (Note that the recycling rule has to make a special case for when one argument has length zero - the output then has length zero as well.) Bill Dunlap TIBCO Software wdunlap tibco.com On Tue, Dec 12, 2017 at 9:41 PM, Maingo via R-help <r-help at r-project.org> wrote:

Hello, Everyone, I am a student an a new learner of R and I am trying to do my homework in R. I have 10 files need to be read and process seperately. I really want to write the codes into something like "macro" to save the lines instead of repeating 10 times of similar work. The following is part of my codes and I only extracted three lines for each repeating section. data.1 <-

Hello all, Can any of you R gurus help me out? I?m not all that great at stats to begin with, and I?m also learning the R ropes (former SAS user). Here?s what I need help with? I have a nested sample design and ran a nested anova, but I don?t know how to interpret the results habitat (four different types) is nested in site (three types), and site is nested in gear (two types)

Dear all, Attached is a description of my data, graph and the problem which I need help with. Hope you have time to open the file and help me out. Many thanks, Jenny ---------------------------------

Full_Name: Martin O'Gorman Version: OS: Submission from: (NULL) (84.176.63.149) I have been looking at the PPC package and have a question. As the input data is comma separated, shouldn?t the command to read in the raw (no batch) mass spec data indicate that sep=?,? (marked below) ? Otherwise, the data read in is the pair of values (m/z,intensity). It is not obvious why that should be.

Dear list, I have the following text to parse (originating from readLines as some lines have unequal size), st = c("START text1 1 text2 2.3", "whatever intermediate text", "START text1 23.4 text2 3.1415") from which I'd like to extract the lines starting with "START", and group the subsequent fields in a data.frame in this format: text1 text2

Earl F. Glynn asks: > -----Original Message----- > From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Earl F. Glynn > Sent: Tuesday, 15 August 2006 8:44 AM > To: r-help at stat.math.ethz.ch > Subject: [R] Help with workaround for: Function '`[`' is not in thederivatives table > > # This works fine: > > a <- 1

http://bugzilla.mindrot.org/show_bug.cgi?id=1039 Summary: Incomplete application of HostKeyAlias in ssh Product: Portable OpenSSH Version: 4.0p1 Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: ssh AssignedTo: bitbucket at mindrot.org ReportedBy: cdmclain

Hi, When the Dovecot 1.0.rc19 IMAP server encounters X-UID headers with gaps in them, it hangs indefinitely. I've attached a sample mailbox (in mbox format) which repeatably exhibits this behavior. The mbox contains only three messages with the following X-UIDs in order: 774, 785, 787. If I remove the X-UID headers from each message, Dovecot handles the mailbox without any problems. UW-IMAP

Hi, I'm try to collect a list of methods/packages available in R for doing in-string variable/symbol substitution, e.g. someFcn("pi=${pi}"), anotherFcn("pi=@pi@") and so on becomes "pi=3.141593". I am aware of the following: ** gsubfn() in the 'gsubfn' package, e.g. > gsubfn( , , "pi = $pi, 2pi = `2*pi`") [1] "pi = 3.14159265358979,

Hi all, I am looking for a function for following calculation. start.month = "July" end.month = "January" months = f(start.month, end.month, by=1) * f is the function that I am looking for. Actually I want to get months = c("July", "August",.............."January") If start.month = 6 and end.month = 1 then I could use (not properly) seq()