similar to: data mining for R

Howdy! Could somebody point me to some good introductory readings about data mining and descriptive data analysis? I'm a psychologist and a couple of times I realized that some things just don't appear in psychological literature, e.g. I've never seen a box plot anywhere in psych journals so I'm not familiar with them. The R help function is great when it comes to explaining

Dear all, first, I would like to thank R-core team for making so a great software available. Thank you all, really! Using R (1.0.0) on a Win98 platform, I need an x-server to run xgobi (through R xgobi interface). I've been using a MI/X server but trying to upgrade I noticed that MI/X is no longer available for free. Similarly, eXceed is available at evaluation version (for a limited time

Hi, how can I import really big plain text data files (several GB) from an ERP-System (SAP-Tables) to R? The Header of these files are always similar, for example: Tabelle: T009 Angezeigte Felder: 7 von 7 Feststehende F??hrungsspalten: 2 Listbreite 0250 ---------------------------------------------------------------------- |X|MANDT|PERIV|XKALE|XJABH|ANZBP|ANZSP|LTEXT

Dear R-user, I wish to know if someone is using R as concern Datamining or KDD (Knowledge Discovery in Database) and if already exists a R package specialized in this kind of analysis. I found this contributes on the R web site: [20] Diego Kuonen. Introduction au data mining avec R : vers la reconqu??te du `knowledge discovery in databases' par les statisticiens. Bulletin of the Swiss

Hello all, I am currently working with rpart to classify vegetation types by spectral characteristics, and am comming up with poor classifications based on the fact that I have some vegetation types that have only 15 observations, while others have over 100. I have attempted to supply prior weights to the dataset, though this does not improve the classification greatly. Could anyone supply some

Dear all, I would like to ask your advice about a suitable computer for the following usage. I (am starting to) work with moderately big data in R: - cca 2 - 20 million rows * 100 - 1000 columns (market basket data) - mainly clustering, classification trees, association analysis (e.g. libraries rpart, cba, proxy, party) Can you recommend a sufficient computer for this volume? I am routinely

Dear all, apologies for this (perhaps recurrent) question but I did not found a question when searching mailing lists. How to write a list of a simple kind, e.g.: abc <- list(one=(1:2), two=(1:5)) # to a file? I understand that write() & co. cannot work but when I try sink("aa.txt", append=T, split=T) abc sink() # the output is indeed "split by rows" in the

Dear all, do anybody know how to set ylim in barplot() correctly? When I write: > barplot(c(.1,.5,1.0)) the y-axis goes from 0.0 to 0.8. Wheny I type: > barplot(c(.1,.5,1.0,),ylim=range(0:1)) the y-axis goes from 0.0 to 0.8. Obviously I am doing something wrong. Are the ylim setting standards in barplot() other than in plot() or is this a bug? Thanks for any hints! Zdenek

R people, I need to know if is possible to make data mining with R. If so, is there any manual or somewhere/one to consult about that. Thank you very much Adri?n

Dear all, sorry for this perhaps stupid question, but it concerns my recent problem as well as the current thread on B-A plot. I would like to plot something like x+y vs. x-y or mean(x,y) vs difference (x,y), but my "variables" x,y are actually pairs of replicates (two observed values of a growth rate by 60 clones). So the order x,y does not matter and each x,y pair can be arranged

I am submitting the command: calcium<-read.table("calcium.txt",header=TRUE) and with Rw0630 and Bdr0631 I get an application error and R crashes. But the command works fine with rjune. I am running under NT4.0 Anyone have a similar problem? Jeff jmorris at ocdus.jnj.com -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read

Dear all, I'm looking for some material on data mining with R. I have something from Luis Torgo but I'd like to see something else. If anybody could help me I'll be thankful Adri??n

I put updates of the following packages on CRAN for use with R 0.64: chron ctest date locfit xgobi Please pick them up from your nearest CRAN site. At least on my system, the packages pass the R CMD check tests ... -k -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-announce mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send

I put updates of the following packages on CRAN for use with R 0.64: chron ctest date locfit xgobi Please pick them up from your nearest CRAN site. At least on my system, the packages pass the R CMD check tests ... -k -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-announce mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send

Dear Mr. Bengtsson, Now i am able to work with R-Matlab interface comfortably. Thanks to you. Recently, I came to know that R can be used for data mining as well. I went through the following site for this : http://rattle.togaware.com/ As they have suggested, I have also installed the two packages: > install.packages("RGtk2") > install.packages("rattle")

library(rattle) Loading required package: pmml Loading required package: XML Error: package 'XML' could not be loaded In addition: Warning message: In library(pkg, character.only = TRUE, logical.return = TRUE, lib.loc = lib.loc) : there is no package called 'XML' i have installed glade package >install.packages("RGtk2") > install.packages("rattle")

Full_Name: Zdenek Skala Version: 1.0.0 OS: MS Windows 95 Submission from: (NULL) (194.108.127.14) Dear all, a problem with barplot() was already discussed on R-help for R 0.90.0 - sorry, if this is a known bug, but I was unable to find it in the bugs database. In: > barplot(c(.1,.5,1), ylim=(0:1)) or > barplot(c(.1,.5,1), ylim=c(0,1)) the y axis is drawn from 0.2 to 0.8, in: >

Hi, I need a help to know whether I can perform the following in R: I have a set of observations (Ns) and each observation is drawn from a poisson distribution with an unkown mean, lambda. The set of lambdas in their turn are drawn from a common prior distribution which is supposed to be a a mixture of two gamma distributions. Is there a way to determine the poisson means in R, given the Ns and

Deall all, We need to perform a statistical analysis of a large database (40,000 entries with approximately 500 fields in each entry) currently handled in Oracle. The data contains categorical variables only. At the current stage we suggest classification and clustering analysis. We are planning to perform the analysis in R and would be very grateful for any

Dear all, I have a question that is probably pretty stupid, so apologies in advance... I do a simple > mydata.tab <- by(my.data.frame, my.data.frame$category, colMeans) ...works fine, but I need to output the results to some "flat" file (kind of table) to work with it in Excel etc. So I am doing now > capture.output(data.frame(unlist(mydata.tab)),