similar to: random number generation from a-/symmetric distribution

Dear list, how can I compute the inverse of the X'WX matrix ("inverse of the weighted sum of squares and crossproducts matrix") from an object of class "lm" from a weigthed linear regression? Thanks, Sven

Hi all, how can I change the background color in lattice strips according to a factor level, eg: library(lattice) x <- rnorm(100) y <- sqrt(x) f <- gl(2, 50, c("A", "B")) xyplot(y ~ x | f) I like to change the background color of the strips according to the levels in f and tried several things like this with no success: xyplot(y ~ x | f,

On Fri, Dec 19, 2014 at 2:40 PM, Brian Mathis <brian.mathis+centos at betteradmin.com> wrote: > > > GPG is really what you want to be using for this. OpenSSL is a general > toolkit that provide a lot of good functions, but you need to cobble some > things together yourself. GPG is meant to handle all of the other parts of > dealing with files. > > I will expand on

Dear list members, I have problems to interpret the coefficients from a lm model involving the interaction of a numeric and factor variable compared to separate lm models for each level of the factor variable. ## data: y1 <- rnorm(20) + 6.8 y2 <- rnorm(20) + (1:20*1.7 + 1) y3 <- rnorm(20) + (1:20*6.7 + 3.7) y <- c(y1,y2,y3) x <- rep(1:20,3) f <- gl(3,20,

Hi all, how do I change the magnification of xaxis annotation? I need a smaller axis text size in some of my plots. I tried cex.axix=0.5 in plot(), but this doesn't work. Thanks, Sven -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or

Hi Everybody, I have a data set in which each observation has a pair of students, with each kid id'd by a 4 digit number: > head(PAIRS) student1 student2 2 2213 2200 4 2198 2195 5 2199 2191 6 2229 2221 7 2247 2249 8 2250 2263 There is no significance to student1 vs. student2: they are just a pair, and the "variable" names could

Hello list, Sorry, these questions are not directly linked to R. If I consider an indefinte real matrix, I would like to know if the symmetry of the matrix is sufficient to say that their eigenvectors are real ? And what is the conditions to ensure that eigenvectors are real in the case of an asymmetric matrix (if some conditions exist)? Thanks in Advance, St?phane DRAY

I'm very interested in seeing support for stack/context switching in LLVM, if only for prototyping language ideas. I'm particularly interested in mechanisms that would make it possible to implement full asymmetric coroutines as described in "Revisiting Coroutines" (Moura & Ierusalimschy, Feb 2009 TOPLAS). From skimming the thread and looking at the llvm-stack-switch wiki, it

Hi all, I don't understand the behavior of is.integer(): > x <- integer() > is.integer(x) [1] TRUE > x <- 10 > is.integer(x) [1] FALSE > x <- 1:10 > is.integer(x) [1] TRUE Why is.interger() returns FALSE if x has only one element? And how can someone check if x is an integer but contains only one value? (R 1.5.0 on Linux i386) Thanks, Sven

Hello CentOS list, I have a requirement that I need to use encryption technology to encrypt very large tar file on a daily basis. The tar file is over 250G size and those are data backup. Every night the server generated a 250G data backup and it?s tar?ed into one tarball file. I want to encrypt this big tarball file. So far I have tried two technologies with no success. 1) generating RSA 2048

Dear list, I hope it is not a FAQ, but I searched the archives and Google, and found nothing. The question is simple : I do not understand why, starting from a symmetrical correlation matrix, heatmap produces an asymmetrical image. Best, Charles -- Charles Plessy, Ph.D. - Genome Science Laboratory The Institute for Physical and Chemical Research (RIKEN) 2-1 Hirosawa, Wako, Saitama 351-0198,

Hi all, there is a vector v with several NAs. I want to create a new vector n of the same length as v and the same NAs as in v and tried this: n <- vector(length=length(v), mode="numeric") replace(n, which(is.na(v)), NA) but this does't work, all values in n are 0. What went wrong? Thanks, Sven -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-

Hi, I'm confused about how to specify random and fixed factors in an aov() term. I tried to reproduce a textbook example: One fixed factor (Game, 4 levels) and one random factor (Store, 12 levels), response is Points. The random factor Store is nested in Game. I tried > str(kh.df) `data.frame': 48 obs. of 4 variables: $ Subj : Factor w/ 48 levels

Dear friends, Please find below the code that I have employed for a rejection sampler to draw from asymmetric laplace distributions. I was wondering if this code can be written more efficiently? Are there more efficient ways of drawing random numbers from asymmetric laplace distributions?? Thanks in advance for your help and have a great weekend. Regards Anup

Hi all, suppose I've got a vector y with some data (from a repeated measure design) observed given the conditions in f1 and f2. I've got a model with two unknown fix constants a and b which tries to predict y with respect to the values in f1 and f2. Here is an exsample # "data" y <- c(runif(10, -1,0), runif(10,0,1)) # f1 f1 <- rep(c(-1.4, 1.4), rep(10,2)) # f2 f2 <-

Hi there, if I copy an x11() graphics device to an eps-file (with dev.copy2eps()) the font in the legend is very large and doesn't fit to the legend box in the eps-file (same with a postscript file). I'm not sure if this is a R problem rather than a ghostscript one. But is there a way to solve this problem in R or depends this on my ghostscript installation? System: R Version 1.2.3 on

Hi list, can anybody point me to the trick how glm is computing the dispersion parameter in quasi-poisson regression, eg. glm(...,family="quasipoisson")? Thanks &regards, Sven

I use a solution to crypt a string that I found using OpenSSL. But the crypted string becomes very long, too long for a varchar 255 to hold it. What can I do to make it shorter? Or should I just use text as column in the mysql db? public_key_file = ''lib/public.pem'' public_key = OpenSSL::PKey::RSA.new(File.read(public_key_file)) @encrypted_string =

Hi, I am new to R and this is probably a very basic question but I can?t seem to figure out a solution. I am creating a stacked ggplot with the following data and code: PercentageData.csv looks like this: decision treatment percentage labtreatment defect 0 53.49 COMMON defect 1 78.00 ASYMMETRIC defect 2 96.67 PRIVATE coop 0 46.51 COMMON coop 1 22.00 ASYMMETRIC coop 2 3.33 PRIVATE %Load data:

Hi all, is it possible to create a multidemensional list? Haven't found anything in the list() help page. Thanks, Sven -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !)