similar to: adding zero to a number vector

Hi all, I am wondering if do exist a function in R that allow me to sample or choose randomly the rows (i.e., samples) inside a given matrix. Thank you very much in advance. Cheers, -- Gian [[alternative HTML version deleted]]

Hello! I'm having some trouble  trying to replicate in R a Stata function  invbinomial(n,k,p)        Domain n:     1 to 1e+17        Domain k:     0 to n - 1        Domain p:     0 to 1 (exclusive)        Range:        0 to 1        Description:  returns the inverse of the cumulative binomial; i.e., it                          returns the probability of success on one trial such              

Hi all! I've got this error while running example(Glm) library("rms") > example(Glm) Glm> ## Dobson (1990) Page 93: Randomized Controlled Trial : Glm> counts <- c(18,17,15,20,10,20,25,13,12) Glm> outcome <- gl(3,1,9) Glm> treatment <- gl(3,3) Glm> f <- glm(counts ~ outcome + treatment, family=poisson()) Glm> f Call: glm(formula = counts ~

Hello Chris,  I 've found two other issues  with MAE and CRPS, giving warning  when running examples. I've the same issue on my data.  Hope that you could find some time to take a look here. Thank you Anna > library(ensembleBMA) Loading required package: chron > example(MAE) MAE>   data(ensBMAtest) MAE>   ensMemNames <-

Hello! I am producing a set of images and I would like them to be sorted by names I give. I was able to produce my names and add integer to them. That is easy. But my problem lies in sort of file from this process: figure_10.png figure_11.png figure_12.png ... figure_1.png figure_20.png ... So I would like to convert integers to something like 01 if upper limit for this conert is 10 or 001

Hello R community, I have a question regarding correlation and regression analysis. I have two variables, x and y. Both have a standard deviation of 1; thus, correlation and slope from the linear regression (which also must have an intercept of zero) are equal. I want to probe two particular questions: 1) Is the slope significantly different from zero? This should be easy with the lm

Hello !! I have this problem: A matrix on True/False and as many numerical vectors as columns, but of different length. What I 'd like to get is this: set.seed(12) > dat <- as.data.frame(matrix(as.logical(sample(T:F, 30, T)),5,6)) > colnames(dat) <- letters[1:6] > rownames(dat) <- paste(letters[1:5],1:5, sep="") > dat a b c d e f a1

Hello! I'm having some problems with  pit function in ensembleBMA. When I run on mu data I have the same warnings as below, when I type the example(pit). Any suggestion on how to resolve it? > library(ensembleBMA) Loading required package: chron > example(pit) pit>   data(ensBMAtest) pit>   ensMemNames <-

Dear all, I have a dataset representing several geographical points (locations), each one having a specific value after performing a PCA. Now I'm trying to understand how to separately represent on a geographic map (of Europe) the pattern of PC1,2, ecc.with colors (e.g.heatmap) I have to add that the dataset includes relatively few points. Therefore, I would also like to interpolate the values

Hello, I have a matrix with the distances among sites. And I have another matrix with the presence and absence of each species in each site. I would like to test the spatial autocorrelation among sites. I have tried to use the function gearymoran of the ade4 package, but error messages keep popping up. Do you know any function for me to test the spatial autocorrelation of my data? Thanks,

Hi, I am writing this in a wrong way, can someone please correct me? > A <- matrix() > length(A) <- 6 > dim(A) <- c(3,2) > colnames(A) <- c("X","Y") > A X Y [1,] NA NA [2,] NA NA [3,] NA NA > A$X Error in A$X : $ operator is invalid for atomic vectors > Thanks, cruz

Hi, I am very new to R and wanted to know if there is a package that, given very long nucleotide sequences, searches and identifies short (7-10nt) motifs.. I would like to look for enrichment of certain motifs in genomic sequences. I tried using MEME (not an R package, I know), but the online version only allows sequences up to MAX 60000 nucleotides, and that's too short for my needs..

Hi Everyone, I was hoping someone could help me with the settings for Tinn-R. I see in the screen shots that it has syntax help, or something similar (tips on what functions, etc). I can not seem to get this to turn on in the program, and I am wondering if I have to set up a few options. I quickly read through the help and could not figure it out. Many thanks! - Brock P.S. It appears as

Hi, I'm a new user. I've been reading through the manual and looking at various examples but am still trying to make sense of the most efficient ways to handle matrices of data. If I have a 2D matrix of data, how do I get the mean, min, max value of each row? I see the "mean" function on a matrix will give me averages by row, but min and max give me the value for the entire

Hi, Why this function doesn't work? function (x) { if (is.factor(x)) { if (!is.ordered(x)) { warning("La mediana non si puo' calcolare!!!") return(NA) } me <- median(unclass(x)) if (me - floor(me) != 0) { warning("Mediana indeterminata") return(NA) } else

>> reload! Reloading... => true >> puts Class < Module true => nil >> puts Module < Class false => nil >> puts Module < Object true => nil >> puts Object < Module false => nil >> Object.parent => Object The above indicates that the Class object instance inherits from the Module object instance and the Module object instance

Hi everybody, I am trying to fit a GAM model without intercept using library mgcv. However, the result has nothing to do with the observed data. In fact the predicted points are far from the predicted points obtained from the model with intercept. For example: #First I generate some simulated data: library(mgcv) x<-seq(0,10,length=100) y<-x^2+rnorm(100) #then I fit a gam model with

Hi all, I have some data x, which are actualy consisted of numerical enties. But the class of this matrix is set to be "factor" by someone else. I used "class(x)", it turns out to be "factor". So I can not calculate them. How can I turn them into numerical data so that I can apply math operations on them? Thanks a lot for your help. Selina [[alternative HTML

On Fri, Jul 15, 2016 at 12:41:49PM -0400, Ilia Mirkin wrote: > On Fri, Jul 15, 2016 at 12:36 PM, Peter Wu <peter at lekensteyn.nl> wrote: > > On Fri, Jul 15, 2016 at 12:10:23PM -0400, Ilia Mirkin wrote: > >> On Fri, Jul 15, 2016 at 9:12 AM, Peter Wu <peter at lekensteyn.nl> wrote: > >> > Hi, > >> > > >> > Here are two patches to fix

The FreeBSD Project is pleased to announce its participation in the Google "Summer of Code" program designed to introduce students to open source software development. The FreeBSD Project received over 350 applications, amongst which 18 projects have been selected for funding. Unfortunately, due to the limited number of spots available, we were unable to fund many first rate