Search Archives

> I wonder how efficiently it is to do the following command on a frequent basis. > nrow(matFF) <- nrow(matFF)+1 Obviously there is overhead (closing file, enlarging file, openeing file). I recommend you measure yourself whether this is acceptable for...

Sorry for wasting bandwidth but I want to thank Prof. Brian Ripley for attacking the problems I had with windows() rescaling. I am sorry that it eat up lots of his time and appreciate very much that nevertheless he did...

Dear all, predict.princomp seems to expect non-NA component $center which is not set by princomp.default. Best regards Jens Oehlschl?gel > x <- matrix(rnorm(400), ncol=4) > predict(princomp(x, covmat=cov(x)), newdata=x[1:10, ]) Error...

On Thu, Mar 04, 2010 at 09:39:41AM -0600, Marc Schwartz wrote: > There has been talk over the years of moving to Bugzilla, but I am not clear on present status. IMHO Bugzilla is too challenging for normal users...

Dear Group, I am currently preparing a lecture on 'Cluster Analysis' and I found two very different ways to interpret a dendrogram. The first option is to 'cut' a dendrogram at a specific height, like it is possible with the...

The first hit of Googling for Using CRAN to fit nonlinear random coefficients models gave me http://cran.r-project.org/src/contrib/Descriptions/nlme.INDEX which isn't too bad, is it? Furthermore Using R to fit nonlinear random...

I like to have a continuously running R process, which can receive a dataframe from a client (over TCP/IP), does some processing, and sends some data back. What is the prefered way to do this? Using the socket interface...

Piet van Remortel <piet.vanremortel at gmail.com> writes: > Hi all, > [...] > Intuitively, I would like to be able to slice the data in a 'data- > cube' kind of way to query, analyze, cluster, fit etc., which > resembles the database data...

Dear R's I have a question about the output from cancor. Using a matrix x of dimension (nxp1) and a matrix y of dimension (nxp2) with p1 < p2 I get p1 canonical coefficients (as expected) and a p1xp1 matrix...

Before re-inventing the wheel I would like to ask: does anyone know about an optimizer in R which can reliably identify which value of X (Xopt) leads to Y (Yopt) closest to Ytarget in Y <- MonotoneStepFun(X) optionally with...

Full_Name: Jens Oehlschl?gel Version: 2.10.0 OS: Windows XP Professional Submission from: (NULL) (85.181.158.112) file.rename() will successfully rename file a to b - even if b exists already. Though the documentation does not state...

Dear R-people, Did anyone succeeded in using R sockets under Windows NT? Yesterday I could establish client and sever sockets with R-0.65.0 under linux, but with R-0.64.2 under NT I can't. I...

# you need to distinguish datatypes 'character' and 'numeric' bindec <- function( b # a CHARACTER representing a binary number ){ as.i <- as.integer(unlist(strsplit(b,""))) print(as.i) fl <- 2^(floor(round(log10(as.numeric(b)),10)):0) # convert b to...

Is it intended that version$os no longer is 'Win32' for the Windows-Compile? What is the approbriate way to check for Windows? Best Jens Oehlschl?gel In 1.4.1 we had > version _ platform i386-pc-mingw32 arch x86...

On Wed, 25 Sep 2002 zlamal at ufi.fme.vutbr.cz wrote: %Hi, I am new in R and I have problem with reading this data file % %0 TITLE Title % 0 XLEGEND Legend %-1 LABEL x %1 1 12 %1...

Hi, is the following difference intended? > ddd <- data.frame(a=1:3, b=1:3) # assignment of 'X' silently ignored > ddd[1,1] <- 'X' > is.factor(ddd[[1]]) [1] FALSE > ddd a b 1 1 1 2 2 2 3...

Full_Name: Jens Oehlschl?gel Version: 2.10.1 OS: Windows XP Submission from: (NULL) (156.109.18.2) # fine as expected from help page: # "from+by, ..., up to the sequence value less than or equal to to" # thus 1...

Dear list, Does anyone happen to have experience with calculating Simpson's pair-wise phylogenetic dissimilarity for large datasets? I have tried using betapart?s phylo.beta.pair function to calculate phylogenetic turnover for a globally-distributed clade with about...

Some days before I asked about a recommended linux environment for R. Looks like, in principle it runs on all major linux distributions (debian red hat, suse). There was a report of a problem with dynamically loading Fortran on Red...

I know it is easy to wish features and difficult to implement them, thus I hope it is ok to make the following remark (I can't offer to implement factor analysis): As R is an integrating statistics environment, I...