search for: petras

Hello, a. when I use hclust with the methods media, centroid, and mcquitty, and plot the results, the dendrograms have lines that are crossing each other. Is this ok? b. My next question refers to plot.dendrogram: How can I use parameters as "hang" or "cex" here? E.g. for st <- as.dendrogram(subtreeshc[[x]]) I would like to have something like this, where cex and hang

Hello! Can I use DBM databases (as they are used in Perl) for the import of large datasets in R? Thanks in advance for your help, Petra Steiner - --------------------------------------------------- Petra Steiner Arbeitsbereich Linguistik Universitaet Muenster Huefferstrasse 27 48149 Muenster

I don't know the Russell-Rao coefficient but maybe this will help: You can compute the number of times y and x are both 1 (that's what your function f does) by counting 1s in y*x, i.e., sum(y*x), aka t(y)%*%x. Ordinary matrix multiplication does this row-by-column, so if M and N are two binary matrices, M%*%t(N) will have (i,j) entry equal to the count of 1s in common to row i of M and

Dear all, which font do I have to choose to use German umlauts at x/ylab in plot? Do I have to change Rdevga; and how? Or should I use these Hershey vectors? I looked quite a long time for a solution, which should be easy, so I thought I'd better ask here. Maybe some other people have already solved this problem. Regards, Petra - --------------------------------------------------- Petra

Hello everybody, Is there in R a so called box m-test for testing the equality of the variance/cov. matrix for checking on homoscedasticity? I could not find it among the traditional packages for multivariate statistics... Petra -- Petra Wallem Centro de Estudios Avanzados en Ecolog伱伃a & Biodiversidad (CASEB) Departamento de Ecolog伱伃a Facultad de Ciencias Biol伱伋gicas Pontificia

Hello to all, I am using ArcView 3.2 under Wine. For now I have been able to do what I need, except for the projection utility... it seems that I am missing some dll, but I have no clue which ones could be... If somebody knows the solution, please let me know. I am new to Wine, and have no clue how to search for the right dll... Thanks a lot to all of you and to this great Wine-project!!! Petra

Dear everyone, I have looked all over the internet but I cannot find a way to solve my problem. In my data I want to sum a couple of variables. Some of these variables have NA values, and when I add them together, the result is NA dat <- data.frame( id = gl(5,1), var1 = rnorm(5, 10), var2 = rnorm(5, 7), var3 = rnorm(5, 6), var4 = rnorm(5, 3), var5 = rnorm(5, 8) ) dat[3,3] <- NA dat[4,5]

Hello again, I'm glad to tell you that I fixed that error. It was gcc compiler error and I found the solution right here: https://askubuntu.com/questions/26498/choose-gcc-and-g-version (this link was sent by Harutyun Khachatryan). I changed the versions of gcc and g++ from 4.3 and 4.4 to 4.8 and 4.9 and it worked. I also posted the solution in the gist I've sent you before. Thank you

Okay, admittedly I'm running an old version 2.0.5, but, why do I have to set the eXecute permission in Linux before Samba will let a Windows client see any files? Why would execute have anything to do with read and/or write? I would think I could set -rw-rw---- or -rw-rw-rw- and be just fine, but oh no, you get an empty list and cannot create new files until I change it to -rwxrwx--- or

Hello every body, I am trying to do a factorial anova analysis following this model: model<-anova(lm(responsevariable~factorA*factorB)) model<-anova(lm(luz$dosel~luz$estado*luz$Bosque)) Df Sum Sq Mean Sq F value Pr(>F) estado 1 6931.1 6931.1 41.6455 7.974e-06 *** Bosque 1 36.6 36.6 0.2197 0.6456 estado:Bosque 1 36.6 36.6 0.2197 0.6456 Residuals

Hello, a. is there a possibility to obtain a distance matrix with the cosine between vectors?? hclust, hierclust, dist will not work and seem to be hard to extend. b. if there is not: Is the cosine between vectors implemented somewhere? Thanks for all hints and advice! Petra Steiner -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, In package survival should be a dataset bladder1. http://stat.ethz.ch/R-manual/R-devel/library/survival/html/bladder.html I can not open it (not found). Both bladder and bladder2 are there. Thanks, Petra

Dear all, below you find enclosed my message from January 9th and my program (attention: beginner). Thanks for both answers! a. However, as far as I know the cosine is not the same as the Pearson correlation (only in special cases). b. Reid Huntsinger's hint was very useful, however I had to transpose the matrix first, for I want to calculate the distance of the _rows_. Regards, Petra

HELLO ! I HAVE SOME STRANGE PROBLEMS AND I NEED HELP. I DIDN'T FIND SIMILAR PROBLEMS IN THE MAILING LIST, SO POSSIBLY I HAVE OVERLOOKED SOMETHING VERY SIMPLE. WHAT I USE *********** SOLARIS 8; SAMBA 2.2.2 (DEFAULT COMPILATION AND INSTALLATION) WIN-BOXES: WIN2K (NATIVE INSTALLATION AND SOME WITH SP2); WINNT4; ALL MS-BOXES POINT TO THE SAMBA SERVER AS A WINS SERVER TWO WORKGROUPS IN

Hello everyone, I installed R and trying to install additional package: `rgl`. The problem is, I keep getting this error: installation of package ?rgl? had non-zero exit status All warnings, installation log and R version info in available in my gist: https://gist.github.com/mateuszcisek/2337bd92695b7ddf10bca10ea403c712 (it was too long to use it all in the message). I use Linux Mint 18.2.

Hi everybody, I am starting my friendship with R. Now I want to do a Correspondence Analysis using the vegan library or multiv library. Both give me the same results which differ from the ones I get running other programs like Statistica... I wounder if there is a problem with my matrix. I have cualitataive variable in the columns and sampling units in the rows... I import my matrix into R

Hi, all. Last week I posted some code for extracting subtrees of trees in hclust format. Petra Steiner quickly found an example for which the code breaks, and sent it to me. The problem seems to be that I had not considered the possibility of trees with unlabeled nodes. In the new version of f.make.subtree (below), I steal some code from plot.hclust to assign labels if there are none. That

Hi, i can store the disk of a guest in a plain partition which isn't formatted. That's no problem, i did it already several times, although the promised speed increase didn't appear. But is it possible to create from such a guest a snapshot in a .sn file using virsh ? Regards, Bernd -- Bernd Lentes Systemadministration Institut für Entwicklungsgenetik Gebäude 35.34 - Raum

Hi all, I am trying to use GAM to work on some data... Are there any resources providing hands-on tutorial/guide on how to do GAM on data in R? Specifically, I am not sure about which model to choose, and smooth models with which effective degree-of-freedom shall I use... I knew there is a book titled: GAM: an introduction using R. Unfornately our local library does not have it... so that's

Sorry, I guess I did not explain my self... I am running wine 0.9.17 and when I launch the projection utility from the terminal I have no problem, but when I choose a .shp file to process, I get the following promt from the gui: Run-time error 5 invalid procedure call or argument. On the terminal I can read the following promt when launching the prjutil.exe: fixme:ole:CoRegisterMessageFilter