Displaying 20 results from an estimated 300 matches similar to: "Extract some character from a character vector of length 1"
2003 May 14
2
number of patients in a hospital on a given date
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"),
2010 Jun 26
2
Recoding dates to session id in a longitudinal dataset
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
2009 Apr 21
3
Deleting rows or cols that do not meet cut off
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
2010 Mar 29
1
how to prove that the factor makes no difference
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
2004 Sep 06
5
Newby question. Basic structure
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
2017 Dec 13
4
Add vectors of unequal length without recycling?
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
2007 Nov 16
1
channels to destroy
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,
--
2013 Dec 31
1
Setting CDR variables for all linked channels
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
2008 Feb 12
1
RE: Delegation of authentication (S4U) and SAMBA
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
2017 Dec 13
0
Add vectors of unequal length without recycling?
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:
2007 Mar 06
2
how to edit my R codes into a efficient way
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 <-
2010 Oct 21
2
nested anova
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)
2007 Jan 24
2
keep track of selected observations over time
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
---------------------------------
2005 Nov 16
1
PPC package-ppc.read.raw.nobatch (PR#8316)
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.
2009 Oct 26
1
regular expressions
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
2006 Aug 15
0
Help with workaround for: Function '`[`' is not in thederivatives table
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
2005 May 12
6
[Bug 1039] Incomplete application of HostKeyAlias in ssh
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
2007 Jan 25
1
X-UID gaps cause Dovecot/IMAP to hang
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
2013 Dec 17
3
In-string variable/symbol substitution: What formats/syntax is out there?
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,
2007 Sep 11
2
Function to get a sequence of months
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()