similar to: remove data frame from list of data frames

Say I have: > set.seed( 1 ) > m <- matrix( runif(5^2), nrow=5, dimnames = list( c("A","B","C","D","E"), > c("O","P","Q","R","S") ) ) > m O P Q R S A 0.2655087 0.89838968 0.2059746 0.4976992 0.9347052 B 0.3721239 0.94467527 0.1765568

Hi all, I have two columns of data, the first consists of parameter estimates and the second probability estimates. I would like to extract the value from the first column based on the max value of column two, but not sure how to do this other than by extracting the value and then manually finding the value in the first column. Anyone know how to do this? Basically, I need to find the row

Hi, I want to generate a number of vectors and store them with different names, like this: x=1 while (x<100) { vector#x# = rnorm(100) x=x+1 } where each vector has, at its hand, instead of #x# a number which goes from 1 to 99. How can I do this? Thanks Gabriele Zoppoli, MD Ph.D. Fellow, Experimental and Clinical Oncology and Hematology, University of Genova, Genova, Italy Guest

Dear R-users, I state that this is for beginners, so you may ignore this in order not to be irritated. By the way, "patience" is another important thing, together with "kindness", we should keep in mind when we teach students and our own children as Jim Lemon pointed out well in the context of the Socratic method. You may know that being kind does not mean giving

hello, i have written a function to extract certain lines from a matrix. the result is a matrix with 6 cols, named dynamically according to the functions arguments. the problem is now, that i'm not able to return the resultmatrix for further use. the object is not being created. example from my console: getans(27,27) [...] [189,] 3969 161 27 1 0 1 [190,] 2142 87 27

Hi @ all, how do I get the largest or lowest k values of list? It must similar to the min() / max() function, but I just don't get it. Best wishes, Markus

Dear R Users, I have a data frame of 4 columns and ~58000 rows, the top of which looks like this: > head(max_out) Latitude Longitude Model Obs 1 -0.25 -49.25 4 4 2 -0.25 -50.25 4 5 3 -0.25 -50.75 4 4 4 -0.25 -51.25 3 11 5 -0.25 -51.75 6 4 6 -0.25 -52.25 12 5 The above shows, for each coordinate point, the

Hello R-helpers, I have the following code that works well, b <-list() for (i in 1:3){ a <- matrix(runif(1),3,3) b[[i]] <- a } b however, I need to do something similar with two loops and I was looking for something that would look like b <- list() for (i in 1:3){ for (j in 1:4){ a <- matrix(runif(1),3,3) b[[i,j]] <- a #but this doesn?t work } } Anyway, I wanted

Hi! I am trying to implement non-bipartite matching. I have around 500 sites which can be clustered by 10 regions. I am able to calculate pairwise Mahalanobis distances between sites (thanks to another post in the forum). However, I want to constrain my match to sites within the same region. Thus I want to replace elements of the distance matrix with a high value, say 999999, for sites not of the

I am relatively new to R, and am having a problem with the following snippet of code, and I do not at all understand why it is behaving this way. I am running Windows XP, with R 2.12.1. I copy and paste these 4 lines into the R Console: t<-c("a","b","c") ans<-select.list(t) txtNBS<-winDialogString("NBS","300") choose.files() I

Hi all, Given a data frame: my.df <- data.frame(a = c(1:5, 1:10, 1:20), b = runif(35)) I want to split it by "a" such that I end up with a list containing 3 components i.e. the first containing a = 1 to 5, the second a = 1 to 10 etc. In other words, sets of sequences of a. I can't seem to find the right form using the split function - can you help? Much appreciated. David

Hi @all, I have the following systems: AMD Processor Scientific Linux 6.0 Kernelversion: 2.6.32-71.18.2.el6.x86_64 KVM / Libvirt out of the repository I've setup my TLS-Certificates with the following howto /http://wiki.libvirt.org/page/TLSSetup/ Now I want to connect the servers with /virsh -c qemu+tls://nebula3/system/(nebula3 is the hostname) but the following error message always

I am new to R and I suspect my problem is easily solved, but I haven't been able to figure it out without using loops. I am trying to implement Blair & Karniski's (1993) permutation test. I've included a sample data frame below. This data frame represents the conditional means (C1, C2) for 3 subjects in 2 consecutive samples of a continuous data set (e.g. ERP waveform).

Hi, A critical regression has been discovered in e2fsck. The problem was introduced in upstream 1.41.5 and is causing updates to block group descriptors to be lost after journal replay. Our 1.41.5.sun2 (.sun1 too) e2fsprogs version also suffers from this problem. We are working on rebasing our e2fsprogs package on 1.41.6 (see bug 19852). Until the new rpm is available (should be very soon), we

Hi, A critical regression has been discovered in e2fsck. The problem was introduced in upstream 1.41.5 and is causing updates to block group descriptors to be lost after journal replay. Our 1.41.5.sun2 (.sun1 too) e2fsprogs version also suffers from this problem. We are working on rebasing our e2fsprogs package on 1.41.6 (see bug 19852). Until the new rpm is available (should be very soon), we

I am trying to interpolate missing values using spline and am running into some strange problems. first, this works just fine: x<- c(1:10, rep(NA, 3), 14:20) y<- c(rnorm(10), rep(NA,3), rnorm(7)) s<- spline(x,y, n=length(x)) plot(x,y) lines(s, col="blue") but look at what happens with my real data (sorry for the long vectors here): x<- c(-9.816, -9.801, -9.801, -9.795,

Hello, with samba-3.0.x an "smbcontrol smbd ping" was answered by all running smbd processes. With samba-3.2.x it is now *also* answered by nmbd and winbindd: [root@cs00 ~]# smbcontrol -V Version 3.2.5 [root@cs00 ~]# for i in `smbcontrol -t 1 winbindd ping | grep PONG | awk '{ print $4}'` ; do pstree -p | grep $i ; done winbindd(29908) - winbindd(29909) [root@cs00 ~]#

I don't have enough RAM for this problem, so I need a work around. This is what I want to do: y<- sample(2^32, 100000, replace=FALSE) but my machine won't let me do that. so I now do this: x<- seq(1,2^32, by=100) y<- sample(x, 100000, replace=FALSE) this works fine, but by selecting every 100th item, it introduces a systematicity that may be problematic. I've tried

Hi Elaine I do not use it very often. I programmed it to mimic Minitab functions (partly) with some adons from czech statistics textbook written by M.Meloun (meloun militky statistics - first hit in google) Basically you can have your data in some data frame or they can be as separated vectors. The function itself expects input of 3 vectors, but you can easily to modify it for imput as

Dear All, I ave created a public snapshot for use on Amazon EC2 using 64 bit Windows. If you want to try R on multiple cores ,remote desktop you can use this snapshot to create copies. It has R, GUIs for beginners (like RCommander , Deducer- Alas rattle failed due to RGtk+) and a lot of R analytical packages. It also has Chrome for browsing, Adobe Reader for reading help, and a dataset WDI (in