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Hello everyone, is there a package/packages for factor analysis, particularly PCA? thanks, Katja Katja L??ytynoja Taitoniekantie 9 A 218 40 740 Jyv??skyl?? Finland tel.+35814 608058 cell.+35850 336 0174 kaloytyn at jyu.fi

[This message is not always serious, but it addresses a real problem.] A problem with R's present name is that it is not very well suited to search engines, although Google at least seems to cope as long as you have sufficient other terms to filter out Toys R Us. Initials remain a problem. I suppose "R" is just too culty to do away with, but perhaps we could come up with a longer

Hi, I have a list p with different size dataframes and length of over 8000. I'm trying to calculate correlations between the rows of dataframes of this list and columns of another dataset (type data.frame also) so that first column is correlated with all the rows in the list dataframe. Some information from another dataset is also included to the final output (all.corrs). This worked a

Dear all, I have to select 122 stratified random samples from a population of >3900 cells. I have 41 strata and I have to draw a different number of samples from them(between 2 and 8). I have tried to apply the funtion strata following the instruction in the manual: strata(dataframe, stratanames=NULL, size, method=c("srswor"), pik,description=TRUE) but I get the error

Dear Helpers   I have a sample frame and i have sampled from it using three methods and now i want to calculate the statistics but i only get the population parameters.   H <- matrix(rnorm(100, mean=50000, sd=5000)) sampleframe=data.frame(type=c(rep("H",100)),value=c(H)) sampleframe   str=strata(sampleframe,c("type"),size=c(20,), method="srswor")

Hi, I'm using Xapian in Python2. I'm trying to replicate an analysis that somebody else performed in Lucene. To do that I need to do a search for a multi-word query in which particular fields are boosted - preferably at query time. That is, given a query like "the cat is lying on the mat" (with an OR operator, ignoring word positions but with stemming and stop words removed),

Dear R users, I have some problems with the parLapply function from the "parallel" package: I use parLapply on a pretty big R object without changing the object within the called function. If I execute parLapply alone, everything works fine. It seems that the object resides only once in the memory. But if I use the same call within another function, the object seems to be multiplied to

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wed, 4 Jun 2014, Katja Wegner wrote: > Date: Wed, 4 Jun 2014 16:21:04 +0200 > From: Katja Wegner <katja.wegner92 at web.de> > To: dovecot at dovecot.org > Subject: [Dovecot] IMAP copy fails because the mailbox size of user1 is > exceeding the quota limit of user2?? > > Hi all, > I do have a mailbox-quota problem

Hello R Experts, I kindly request your assistance on figuring out how to get a stratified random sampling proportional to 100. Below is my r code showing what I did and the error I'm getting with sampling::strata # FIRST I summarized count of records by the two variables I want to use as strata Library(RODBC) library(sqldf) library(sampling) #After establishing connection I query the data

Hello, I'm running R 2.10.1 on Windows Vista. I'm selecting a random sample of several hundred items out of a larger population of several thousand. I realize there is srswor() in package sampling for exactly this purpose, but as far as I can tell it uses the native PRNG which may or may not be random enough. Instead I used the random package which pulls random numbers from random.org,

Hi, I have a large data set that I input as a matrix, where I have 1:x rows with names AX, then x+1: y rows named AY, etc. The idea is that I have to count how many rows exactly I have with name AX and how many I have with name AY (or find which row numbers have names AX). Is there any way in R to count a number of rows with a name matching a required pattern? Thanks in advance, Katie --

I have a data set something like this: "YYYY", "Value" 1972 , 117 1984 , 73 1969 , 92 1976 , 113 1999 , 80 1996 , 78 1976 , 98 1984 , 106 1976 , 99 it could be created with: > dafSamp <- data.frame(cbind(c(1972,1984,1969,1976,1999,1996,1976,1984,1976),c(117,73,92,113,80,78,98,106,99))) The real dataset is of cause much larger, app. 100.000 samples

Finally got a chance to install Centos 6.x x86_64 version and having an issue with the latest version of freenx. This is a desktop install on a esxi 5 with all updates and only thing I have installed is the latest vmware tools. When I enable the extras repo and install the nx-3.5.0-1.el6.ay.x86_64.rpm and freenx-0.7.3-8.el6.ay.x86_64.rpm. When I try to logon the desktop pops up but I get the

Hello, We have written a program (below) to model the effect of a covariate on observed values of a response variable (using only 80% of the rows in our dataframe) and then use that model to calculate predicted values for the remaining 20% of the rows. Then, we compare the observed vs. predicted values using a linear model and inspect that model's coefficients and its R2 value. We wish

The function of crossprod in R puzzled me. I would like to calculate the cross product of two vectors. According to my text book, it defines like this: a = (ax, ay, az) b = (bx, by, bz) then, the cross product of a and b is: a X b = (ay*bz-az*by, az*bx-ax*bz, ax*by-ay*bz) It can also write in a determinant format. But the crossprod or tcrossprod function in R appeared not calculate the cross

Hi, I am writing a term paper about linear regression and analysis of variance in R and SPSS. I am a bit confused because I get different estimates for the regression coefficients from R and SPSS. Does anyone have an explanation for this? As I am not so experienced in data analysis, I don't know why this happens. Thank you for helping, Katja

  Dear R helpers   Suppose I have two sets of ranges (interest rates) as   Range 1 : (7 – 7.50, 7.50 – 8.50, 8.50 – 10.00) with respective probabilities 0.42, 0.22 and 0.36.     Range II : (11-12, 12-14, 14-21) with respective probabilities 0.14, 0.56 and 0.30 respectively.     My problem is to form the combinations of these ranges in a decreasing order of joint probabilities. It is assumed that

I have a degraded raid array (originally raid-10, now only two drives) that contains an LVM volume. I can see in the appended text that the Xen domains are there but I don't see how to mount them. No doubt this is just ignorance on my part but I wonder if anyone would care to direct me? I want to be able to retrieve dom-0 and one of the dom-Us to do data recovery, the others are of

Dear list, I'm seeking advice to extract some numeric values from a log file created by an external program. Consider the following example, input <- readLines(textConnection( "some text <ax> = 1.3770E-03 <bx> = 3.4644E-07 <ay> = 1.9412E-04 <by> = 4.8840E-08 other text <aax> = 1.3770E-03 <bbx> = 3.4644E-07

I have a one problem with Raid controller Tekram TR-822... I'm using dmraid software: root at ns1: / $ dmraid -r /dev/sda: sil, "sil_ajacddafagff", mirror, ok, 156299440 sectors, data@ 0 /dev/sdb: sil, "sil_ajacddafagff", mirror, ok, 156299440 sectors, data@ 0 When I'm start dmraid -ay: root at ns1: / $ dmraid -ay RAID set "sil_ajacddafagff" was not activated