similar to: Skipping rows and columns in large matrix

I am trying to get a random matrix based on an original matrix called disperser.mx, with dimensions 30x73 When I write the following code: >scramble = sample (disperser.mx) >newmat = matrix(scramble, nrow=30) I get the following warning message and a very weird matrix with 30 rows but only 3 columns shown below: Warning message: data length [73] is not a sub-multiple or multiple of the

I work with Windows and use R version 2.4.1. I am JUST starting to learn this program... I get this warning message 'NAs introduced by coercion' while trying to build a distance matrix (to be analyzed with NMDS later) from a 336 x 100 data matrix. The original matrix has lots of zeros and no missing values, but I don't think this should matter. I searched this forum and people have

Hi R-community, I am doing a PCA and I need plots for different combinations of axes (e.g., PC1 vs PC3, and PC2 vs PC3) with the arrows indicating the loadings of each variables. What I need is exactly what I get using biplot (pca.object) but for other axes. I have plotted PC2 and 3 using the scores of the cases, but I don't get the arrows proportional to the loadings of each variables on

I have a file in fwf. It is rather large, about 40,000 rows and 40 variables (columns). I only need about 10 variables form the data set for the analysis at hand. Unfortunately, these 10 variables are not contiguous in the file, for example, the first is position 1-8, the next position 25-27, then 40. Is there a way to read the selected varaibles that I need without reading in the entire data

Hi all, Can anyone please tell me how to start R from Tinn-R's "Toogle start/close Rgui" button, after I've updated to a new version of R? It seems like Tinn-R keeps looking for the previous version of R. I have updated R twice already since I started using Tinn-R and I haven't been able to make that button work again. It tells me "The specified file was not

Trying to use R to build an interactive "slide show", to be displayed on a projector. The purpose of the presentation is to show how one could construct a simple graph using R. It is meant as a general overview rather than as detailed instruction. For example, something like the following sequence of commands. At lecture time, I want the interpreter to read these commands one at a

Dear, I always used dovecot in version 2.0 and in the last month i update my servers to dovecot 2.2 but now i have problems with comand dovecot import, not works for me, bellow i put 2 examples used in my tests in boths cases not works for me. Someone already saw some case similar or can help me with this ? doveadm import -u teste at aaaaa.com mdbox:~/mdbox-backup "" mailbox INBOX from

Hi List, we're calling a sip phone from our Asterisk Server, and try to add logic depending on the dialstatus Stripped down example; exten = 494XXXXXXXXX,n,Dial(SIP/4120089,15,w) exten = 494XXXXXXXXX,n,Goto(98-${DIALSTATUS},1) exten = 494XXXXXXXXX,n,Hangup() ..... exten = 98-BUSY,1,NoOp(Busy) exten = 98-BUSY,n,ExecIf($["${Voicemail}" =

Hi Friends, I'm new to R.I have a data frame : xxx having columns color name values R XXX 10 G YYY 4 Y ZZZ 5 G XXX 2

Dear all, I am trying to split a matrix into 2 as efficiently as possible. It is a character matrix: 1 2 3 1 "2-271" "2-367" "1-79" 2 "2-282" "2-378" "1-90" 3 "2-281" "2-377" "1-89" I want to make 2 matrices from this, as succinctly and efficiently as possible. I've tried such

I have the following list of strings: name <- c("hsa-miR-555p","hsa-miR-519b-3p","hsa-let-7a") What I want to do is for each of the above strings replace the text after second delimiter with "zzz". Yielding: hsa-miR-zzz hsa-miR-zzz hsa-let-zzz What's the way to do it? [[alternative HTML version deleted]]

Hello, when I use list.files with recursive = TRUE and all.files = TRUE, R returns a list of strings/paths. >From all those strings I want to keep only the ones starting with a . I tried using grep to achieve that. However, the problem is that because of the recursive list.files parameter, for some files beginning with a . there is a path attached. I think it is not as simple as it looks

Dear All, I have the data some thing like this, I am showing here three days data only: > dummy.data <- read.table(file='dummy.txt',sep='', header=TRUE) > dummy.data StDate Domaindesc Logins 1 05/01/10 xxx 10 2 05/01/10 xxx 45 3 05/01/10 xxx 2 4 05/01/10 yyy 45 5 05/01/10 yyy 20 6 05/01/10 yyy

Hi, I''m having an issue with changing the source address of packets origininating from a specific user using a combination of iptables and iproute2. We want to change packets originating from a specific service so that they originate from that service''s IP address, so that we can move it to a different physical server and have the packets appear to come from the same

See the following SIP trace. Where in the world does Asterisk get port 1025 to respond to? This is asterisk 1.6.x. Thanks. -- James <--- SIP read from zzz.zzz.zzz.44:9363 ---> NOTIFY sip:pbx1.mydomain.com SIP/2.0^M Via: SIP/2.0/UDP 192.168.1.140:9363;branch=z9hG4bK-b9a860d3^M From: "xxx-xxx-xxxx" <sip:xxxxxxxxxx at pbx1.mydomain.com>;tag=467525dd6fac949do0^M To:

Dear all, I cannot figure out how to solve a small problem (well, not for me), surely somebody can help me in few seconds. I have a series of strings in a vector X of the type "xxx", "yyy", "zzz", "IgA", "IgG", "kkk", "IgM", "aaa". I want to substitute every ENTIRE string beginning with "Ig" with

Hi Peter, I got all your patches and applied them, and I wanted to say kudos for a great job done. This is the output of upsc that I'm getting right now. I had the same issue when using any cvs version (from two weeks ago) that made my UPS go into a state where it wasn't functioning normally (checking the kernel log shows that it cannot be connected and I had around a page of DEVFS_USB

Dear list, we use debian stretch with Louis's 4.10.5 packages and bind9_dlz backend. There are two AD DCs with redundant ISC DHCP servers on them. The DHCP servers are updating the DNS along the lines of https://wiki.samba.org/index.php/Configure_DHCP_to_update_DNS_records_with_BIND9 but with nsupdate commands replaced by suitable calls to "samba-tool" (I had problems getting the

This is mildly off topic since it has more to do with TCP/IP networking than with CentOS per se. However, at the risk of ruffling a few feathers I would like some advice on how to resolve the following routing problem: Given: dual homed host running CentOS-5.2 with eth0 = 2xx.yyy.zzz.23 eth1 = 192.168.219.1 and a Cisco gateway at 2xx.1xx.y7y.1 with the following networks: interface

Is there a specific place where we can place code to run once only in a package? I have code that switches based on Sys.info()[["nodename"]] - but since this just about never changes, I would like to run it only once when someone runs: require( mypackage ) or library( mypackage ) I'm tempted to have some free-floating code in global space (in one of my package's .R files), but