Forum: R

Hey guys, I am studying about converting Matrix to Data frames. What I have observed though is that converting matrix with characters into a data...

Hi! I'm an R-beginner and need to regress on several variables. I am using the lm-function. Unfortunately, it is not working, i.e. there is an...

Is it possible to store vectors as elements in matrices? Or will this problem need to be solved through object oriented programming.

Hello, I'm making a program that requires a selection of elements from a vector. Assuming the chances of any vector element being selected is...

I am trying to install R under Linux, but while executing the command "./configure" i am getting the error:- "configure: error: --with-readline=yes...

Hey folks, I am completely new to R programming and have been trying some stuff and am stuck at some places. I am not sure if this the right...

Hi everyone! After reading post in TS, I try to learn to use R, perhaps the nlminb() function to do a numerical maximization as a MLE question. ...

Hi there, I am hoping someone will be able to help me with a problem I have been having. I haven’t used R much so I am sorry if it is really...

Hello dear fellow R users, I have a regression model called "reg" with gdp as the dependent variable and a,b,c, etc. as the independent variables....

Hi, I used the white.test()-function and this was my result: White = 50, df = 49, p-value = 0.4334 Does that mean that there is...

I want to select only the data from an array that is sequential by column n. For example: n <- c(1, 2, 4, 6, 7, 8, 9, 11) x <- c(10, 20, 30,...

how can maximum the ...

Hello all, I'm currently doing a project which I'm trying to use R with to get more familiar with it. I've run into a problem with scatter...

Hello all: I posted a similar question in the SAS forum (asking if SAS had the capabilities of doing some type of Markov Decision Process). Since...

I want to find which points fall within an interest area, and then plot only those points. Here is a basic example. install.packages("sp")...

Hi, how I can install package from local tar.gz file??? please give me a sample tnx...

Hi everyone, I'm having some trouble with the function lines() in R. Here is an example of the code: <code> x=rnorm(100)...

Hello everyone! So... I am trying to learn how to correctly use the 'apply' function while learning something about the Wishart distribution. R...

Hi, I have a matrix x with 97 rows and used the function sample like this : rownumbers=sample(1:97,size=70) data1=x I'm having trouble to...

Hello all, I want to write an R procedure that calculates the power of a simple two samples t-test. Does anyone here has an idea how to do it ? ...

Is there any way of splitting AnonEtAl2013 into Anon Et Al 2013 All attempts have failed so far

I've got all the box plots: boxplot( Daten$Gewicht~interaction(Daten$Dosis,Daten$Geschlecht, drop=TRUE), ylab="relative Nierengewichte",...

my dataset looks like this in the beginning: Dosis weight sex 1 0 6.62 m 2 0 6.65 m 3 0 5.78 ...

I am trying to install the package rpud on a CENTOS Linux server and got the following error: /usr/local/cuda/bin/nvcc -shared -Xlinker "...

Hi All! This is my first post on this website (have been reading it for months though) so please bear with me if I don't do things right :) The...

Hi all, I have been attempting to run the following model in the lme4 package in R. ...

I am having some trouble trying to install a number of packages in R on my work computer. An example of the code I am using is as follows:...

Hi, I am just starting to use R for the first time. I am trying to figure out how to read XML is R. Does anyone know how to do that? Also, does...

I have a data frame that looks like this: > x Name Group Score John A 90 John B 75 John C 100 Emma A 95 Emma B 80 Emma C 85

I couldn't run the below code in R; it runs when I change to T, but percent of male is not exact 49%. ni = length(ID <- 1:100) gender = c(0,1)...

lag1 <- lag(gdpts, -1) > union1 <- ts.union(gdpts,lag1) > union1 gdpts lag1 1952 Q2 0.000661460 NA 1952 Q3 ...

if I have the below sequence of sampling time points from 0hr to 1440 hr, how can I add noise to the below sequence, I don't think jitter() will work...

I'm about to finish my bachelor thesis, but I have some problem with my AR-GARCH model in R. I think I've found the correct way of implenting my...

Hi, im pretty new to R. I have this function that only works for positive values. Why is that? For example: annualize <-...

A parent with her two alleles of the B314 gene "transmits" or gives a copy of one of her alleles to each of her offspring. If she has two bad...

Could anybody please help me to create a longitudinal concentration dataset including: 100 subjects (ID) 51% female every subject has 3 study...

Hello everyone, I'm extremely new to using R and have been battling to process some data using an iterative function. I just wondered if anyone...

Dear R listers, I am looking for R code/function for Tukey- Duckworth two sample test and I am awiting for your attention kindest regards...

Hello, It's been more than a week now that I am banging my head on my desk to solve this problem. My data look like this : 6 groups of 5, 5,...

I am using R for one of the first times for a project. I am doing a fixed order, stepwise, multivariate multiple regression with 3 control variables,...

Is it possiblle to determine which effects are tainted using R or a package? I know that one can use R to determine which effects go into which...

Hello, I really need some help here. Im working on my final thesis and I rieally need hepl to find out, if any of 2 subsets of obserations are...

I'm trying to convert Royal Society for Protection of Birds into RSPB: x <- c("Royal Society for Protection of Birds") However, I can only get...

I have homework problem on page 378 about breast cancer the question asks Suppose the a cancer is classified as benign if p  0.5 and malignant if...

I'm using git as a version control system in RStudio. I have several different versions of an R script saved in git. Lets say, I've deleted a block...

I'm editing my thesis and trying to find instances where I have repeatedly used the same word in the same sentence. I'm wondering if there is a way...

Halo all, I am very new in R and need help from the expert. Thank you in advance for replying my post. - I have set of long-term water...

Hello everyone, I was working on a regression problem, where there is one dependent variable (Y) which is continuous and two predictors A (expressed...

Figured it out, thanks.