similar to: prob package: elementary probability on finite sample spaces

Dear useRs, We are pleased to announce the preliminary release of the IPSUR package. The primary audience was originally envisioned to be upper division undergraduate mathematics/statistics/engineering majors, but other useRs may find this material useful. In a nutshell, this package slightly modifies and adds selected functionality to the R Commander by John Fox. The changes were meant to

Dear useRs, We are pleased to announce the preliminary release of the IPSUR package. The primary audience was originally envisioned to be upper division undergraduate mathematics/statistics/engineering majors, but other useRs may find this material useful. In a nutshell, this package slightly modifies and adds selected functionality to the R Commander by John Fox. The changes were meant to

Thanks to Jay Kerns and Jim Lemon for their help. It's exactly what I wanted and "aggregate" is very efficient even with a huge data. Thanks "G. Jay Kerns" <gkerns@ysu.edu> a écrit : Hi Louis, If I am understanding your question correctly, here is one way: suppose your matrix is M of dimension n x k. D <- data.frame(M) # convert to data frame ones <- rep(1,

Hello, I have been interested in setdiff() for data frames that operates row-wise. I looked in the documentation, mailing lists, etc., and didn't find exactly the right thing. Given data frames A, B with the same columns, the goal is to extract the rows that are in A, but not in B. Of course, one can usually do setdiff(rownames(A), rownames(B)) but that is cheating. :-) I played around a

Hello, This is in response to a post from a couple of years back regarding Kaiser-Meyer-Olkin Measures of Sampling Adequacy. (http://tolstoy.newcastle.edu.au/R/help/05/12/17233.html) As it turns out, last year Trujillo-Ortiz et al. at the Universidad Autonoma de Baja California wrote and posted a script for MATLAB that does the job. You can see it (with a discussion of KMO statistics) at

Dear R-Devel, I have had it in my mind for some time now that a Task View related to R and education might be a good thing. There are currently 19 Task Views, covering a broad spectrum of general topics for which R may be used. The homepage lists 64 books related to R, and several of them have accompanying packages on CRAN. There is a wiki and a host of contributed documentation. We also have a

Dear R-help, Suppose I write a script that looks something like this: #### script.R set.seed(something) x <- rnorm(100) y <- runif(500) # bunch of other stuff save.image() ### end of script.R Now, I give you a copy of my script.R (with the set.seed statement removed, of course) together with the .RData file that was generated by the save.image() command. Question: 1) can you tell

Dear R-SIG-Debian, > > a) You still haven't explained why you need to rebuild it when > ? ? ? sudo apt-get install r-cran-rgl > ? gets you a binary I do not want to answer for the OP, but for myself, two things: 1) I maintain a personal library in my HOME folder - for a few reasons - and one of the benefits is that I can install/update R packages without needing to run R as

Dear R-devel, Please see the recent thread on R-help, "Odd Behavior Out of setdiff(...) - addition of duplicate entries is not identified" posted by Jason Rupert. I gave an answer, then read David Winsemius' answer, and then did some follow-up investigation. I would like to change my answer. My current version of setdiff() is acting in a way that I do not understand, and a way

Dear R-devel, Please see the recent thread on R-help, "Odd Behavior Out of setdiff(...) - addition of duplicate entries is not identified" posted by Jason Rupert. I gave an answer, then read David Winsemius' answer, and then did some follow-up investigation. I would like to change my answer. My current version of setdiff() is acting in a way that I do not understand, and a way

IPSUR-1.0 is making its way through CRAN. It is a snapshot of the development version of the following textbook: Title: Introduction to Probability and Statistics using R, First Edition ISBN: 978-0-557-24979-4 Publisher: me The book is targeted for an undergraduate course in probability and statistics. The prerequisites are a couple semesters of calculus and a little bit of linear algebra. I

IPSUR-1.0 is making its way through CRAN. It is a snapshot of the development version of the following textbook: Title: Introduction to Probability and Statistics using R, First Edition ISBN: 978-0-557-24979-4 Publisher: me The book is targeted for an undergraduate course in probability and statistics. The prerequisites are a couple semesters of calculus and a little bit of linear algebra. I

Dear R-help, I first thought that the empty set (for a vector) would be NULL. x <- c() x However, the documentation seems to make clear that there _many_ empty sets depending on the vector's mode, namely, numeric(0), character(0), logical(0), etc. This is borne out by y <- letters[1:3] z <- letters[4:6] intersect(y,z) which, of course, is non-NULL: is.null(character(0)) #

Hi, we are about to update some class definitions in our distrXXX family of packages, so I would be eager to know whether there are plans in R Core to implement some version management tools for S4 classes as described in section 7.4 in JMC's "Green Book". In his recent book (continuing the color scheme, is it to be called the "Yellow Book"? :-), this topic has not been

I'm trying to solve this issue I'm having where using 'valid users = +unixgroup' just plain doesn't work. I can't find any /documented/ reason why this is so, but nevertheless, it seems to be the case. This is with samba 3.6.18, but seems to exist in all of 3.6.x and most or all of 3.5.x and perhaps earlier as well (see bug #6681). From what I can tell, the underlying

Hi all, I have a Windows 2003sp2 domain with a few Samba 3.0 member servers. This domain services about 700 XP PCs distributed across 15 or so subnets. On one particular subnet there are about 300 PCs, 2 or 3 2003 member servers and a samba 3.0.28 member server (solaris). When/if the samba server picks up the local master browser role, it will cause the domain master browser to crash after a

I'm trying to create a DFS root in my 2003 AD domain, and point it to a share hosted on a Samba server. From the documentation, I had assumed that this was supported (msdfs host = yes ?). Am I missing something basic? This is with Samba 3.0.31 on RHEL 5. When I go to create the DFS root (via the msc plugin) and instruct it to use my samba machine as the host, I get this error: "The

Hello, We use undi_drv.exe that is provided with Symantec Ghost Enterprise. This driver loads a UNDI PXE stack into memory. It, along with a UNDI packet driver are bundled into a 1.44MB disk image that we use for netbooting computer lab machines into the ghost client. This is done with pxelinux. This driver has been working fine for a couple years now. Recently, I upgraded the pxelinux.0 to

I'm seeing these errors every couple minutes from my Samba server (3.0.28... RHEL5 build). [2008/09/15 11:59:44, 0] smbd/nttrans.c:call_nt_transact_ioctl(2463) call_nt_transact_ioctl(0x9005c): Currently not implemented. I realize what 'currently not implemented' means, and since no users have complained, I assume the message is ignorable. I was wondering however, if anyone can

I would have thought this to be relatively elementary, but I can't find it mentioned in any of my stats texts. Please consider the following: library(fitdistrplus) fp = fitdist(y,"exp"); rate = fp$estimate; sd = fp$sd fOneWeek = exp(-rate*7); #fraction that happens within a week - y is measured in days fr = exp(-rate*dt); #fraction remaining - dt = elapsed time from