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...04 day 22 svn rev 45424 language R version.string R version 2.7.0 (2008-04-22) vQ -- ------------------------------------------------------------------------------- Wacek Kusnierczyk, MD PhD Email: waku at idi.ntnu.no Phone: +47 73591875, +47 72574609 Department of Computer and Information Science (IDI) Faculty of Information Technology, Mathematics and Electrical Engineering (IME) Norwegian University of Science and Technology (NTNU) Sem Saelands vei 7, 7491 Trondheim, Norwa...

Following Duncan's suggestion, I forward the below to R-devel. vQ -------- Original Message -------- Subject: Re: [R] Randomly remove condition-selected rows from a matrix Date: Fri, 02 Jan 2009 10:34:52 -0500 From: Duncan Murdoch <murdoch at stats.uwo.ca> To: Wacek Kusnierczyk <Waclaw.Marcin.Kusnierczyk at idi.ntnu.no> CC: R help <R-help at stat.math.ethz.ch> References: <79CAFBDD-4BB8-4C9D-A0E9-54E280458510 at gmail.com> <8b356f880812300920o19d18aeo47dc31f087c3f36 at mail.gmail.com> <DA6ECC19-C786-4C02-B246-4B613726BC7F at gmail.com> <...

the following is a trivialized version of some functional code i tried to use in r: (funcs = lapply(1:5, function(i) function() i)) # a list of no-parameter functions, each with its own closure environment, # each supposed to return the corresponding index when applied to no arguments sapply(funcs, function(func) func()) # supposed to return c(1,2,3,4,5) there is absolutely nothing unusual in

m = matrix(1:4, 2) apply(m, 1, cat, '\n') # 1 2 # 3 4 # NULL why the null? vQ

Dear R Gurus: How do I find the functions which are primitives, please? Thanks, Edna Bell

Full_Name: Wacek Kusnierczyk Version: 2.8.0 and 2.10.0 r48242 OS: Ubuntu 8.04 Linux 32 bit Submission from: (NULL) (129.241.110.161) In the following code: duplicated(data.frame(), incomparables=NA) # Error in if (!is.logical(incomparables) || incomparables) .NotYetUsed("incomparables != FALSE") : # miss...

Full_Name: Wacek Kusnierczyk Version: 2.10.0 r48365 OS: Ubuntu 8.04 Linux 32bit Submission from: (NULL) (129.241.110.141) sprintf has a documented limit on strings included in the output using the format '%s'. It appears that there is a limit on the length of strings included with, e.g., the format '%d' beyo...

Hi all I have the following regular expression problem: I want to find complete elements of a vector that end in a repeated character but where the repetition doesn't make up the whole word. That is, for the vector vec: vec<-c("aaaa", "baaa", "bbaa", "bbba", "baamm", "aa") I would like to get "baaa" "bbaa"

Dear R Gurus: I read somewhere that functions are considered vectors. Is this true, please? thanks Edna Bell

Full_Name: Wacek Kusnierczyk Version: 2.10.0 r48269 OS: Ubuntu 8.04 Linux 32 bit Submission from: (NULL) (129.241.199.164) In the following example (and many other cases): quote(a=1) # 1 the argument matching is apparently incorrect wrt. the documentation (The R Language Definition, v 2.8.1, sec. 4.3.2, p. 23), which...

Full_Name: Wacek Kusnierczyk Version: 2.8.0 and 2.10.0 r48242 OS: Ubuntu 8.04 Linux 32 bit Submission from: (NULL) (80.202.30.36) The following raises an error: if (as.raw(1)) 1 # error: unimplemented type 'raw' in 'asLogical' However, ?'if' says: " Arguments: cond: A length-one lo...

It was recently pointed out by Wacek Kusnierczyk that although one is prevented from doing FALSE <- TRUE one *can* do assign("FALSE",TRUE) and have an object named ``FALSE'' with value TRUE in one's workspace. This apparently has no deleterious effects; e.g. doing sample(1:7,replace=FALSE) gives a random permuta...

...pty string at the beginning but not at the end of the output; no other language i know would do that this way) and actually wrong wrt. the algorithm. Any opinion? What was the ground for this design? vQ -- ------------------------------------------------------------------------------- Wacek Kusnierczyk, MD PhD Email: waku at idi.ntnu.no Phone: +47 73591875, +47 72574609 Department of Computer and Information Science (IDI) Faculty of Information Technology, Mathematics and Electrical Engineering (IME) Norwegian University of Science and Technology (NTNU) Sem Saelands vei 7, 7491 Trondheim, Norwa...

I was wondering why the following doesn't work: > a=c(1,2) > names(a)=c("one","two") > a one two 1 2 > > names(a[2]) [1] "two" > > names(a[2])="too" > names(a) [1] "one" "two" > a one two 1 2 I must not be understanding some basic concept here. Why doesn't the 2nd name change to

I was wondering why the following doesn't work: > a=c(1,2) > names(a)=c("one","two") > a one two 1 2 > > names(a[2]) [1] "two" > > names(a[2])="too" > names(a) [1] "one" "two" > a one two 1 2 I must not be understanding some basic concept here. Why doesn't the 2nd name change to

Dear all, let's assume I have a vector of character strings: x <- c("abcdef", "defabc", "qwerty") What I would like to find is the following: all elements where the word 'abc' does not appear (i.e. 3 in this case of 'x'). Since I am not really experienced with regular expressions, I started slowly and thought I find all word were

Hello! I have the problem that in my function the passed variable is not used, but the variable name of the dataframe itself?- difficult to explain, but an easy example: TestFunc<-function(df, group) { ??? print(names(subset(df, select=group))) } df1<-data.frame(group="G1", visit="V1", value=0.9) TestFunc(df1, c("group", "visit")) Result: [1]

...iline expression grief (jim holtman) > 16. Re: R multiline expression grief (Thomas Lumley) > 17. Re: cor.test(x,y) (Sarah Goslee) > 18. Re: Selecting / creating unique colours for behavioural / > transitional data (Ross Culloch) > 19. Re: R multiline expression grief (Wacek Kusnierczyk) > 20. Re: Selecting / creating unique colours for behavioural / > transitional data (hadley wickham) > 21. Re: code to find all distinct subsets of size r from a set of > size n (Kingsford Jones) > 22. Re: Selecting / creating unique colours for behavioural / >...

?ginv provides 'Modern Applied Statistics with S' (MASS), 3rd, by Venables and Ripley as the sole reference. I happen to have this book (4th ed) on loan from our library, and as far as I can see, ginv is mentioned there twice, and it is *used*, not *explained* in any way. (It is used on p. 148 in the 4th edition.) ginv does not appear in the index of MASS. ginv is an implementation of

i wonder about the following examples showing incoherence in how type conversions are done in r: x = TRUE x[2] = as.raw(1) # Error in x[2] = as.raw(1) : # incompatible types (from raw to logical) in subassignment type fix it seems that there is an attempt to coerce the raw value to logical here, which fails, even though as.logical(as.raw(1)) # TRUE likewise, x[2]