similar to: beginning my R-learning

Thank you to all who made very helpful suggestions to get started with R. Duncan Murdoch raised an excellent question, asking about my background and reason for using R. I'm an epidemiologist, applying the marginal structural models approach (inverse probability of treatment weights) in a Cox proportional hazards analysis. The statistical program which I had been using does not have

Hi, I use?R to draw my graphs. I have 100 points on a simple xy-plot. The points are distinguished by a third variable which is categorical with 10 levels. I have been plotting x against y and using gray scales to distinguish the level of the categorical variable for each point. It looks ok to me but?a journal reviewer says this is not any use. I cannot afford to pay for colour prints. Any

Hi, all. I'd like to know if exists a manner to get the first index where a condition is attained in a vector. For example, There is a better solution than first.index <- table(subject[corretor==27])[1] (give me the subject for the first time that corretor is 27)? Thanks, ======================================== Cezar Freitas (ICQ 109128967) IMECC - UNICAMP Campinas, SP - Brasil

Hi all, Please help on this. We will be teaching epidemiology using opensource software. What are R built-in functions or functions in available packages that are capable of doing these: a) Logistic regression (glm?) b) Conditional logistic regression c) Logistic regression with random effects d) Beta-binomial regression e) Poisson regression f) Weibull regression (eha?) g) Exponential

Bonjour, je voulais savoir si il est possible d''installer les fichiers wxruby2 ailleurs que dans les dossiers habituel et sans se servir de rubygems? car j''aimerais pouvoir les déplacés. Merci Sebastien _______________________________________________ wxruby-users mailing list wxruby-users@rubyforge.org http://rubyforge.org/mailman/listinfo/wxruby-users

Hi , I have a data frame (Data1) which has a area variable (AREA) with codes (RA,RG,LT etc.). I would like to split the data frame into individual data frames called RA, RG, LT conatining only the observations from those areas. Thanks yours sincerely Andrew McCulloch -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read

hey guys, Does anyone know why the french letter "?" is displayed as a question mark "?" inside an <h1> tag ? -- Posted via http://www.ruby-forum.com/.

Hi, all. Suppose I have an object with names (like a data.frame) and I want to walk in a loop with your names. How can I do this? The idea is like this: my.data<-data.frame(matrix(runif(6),ncol=2)) names(my.data) [1] "X1" "X2" for(i in names(my.data)){ my.variable <- cat(paste("my.data$", i, "\n", sep="")) print(mean(my.variable)) } #it

Hi all, sorry for my english, but I don't speak yours language. I'm trying to use bart() and rbf(). The package I'm using now is "BayesTree" and "neural", respectively. I could create the models, but I can't predict my test data. Does anyone have such an experience? Any advice is appreciated! Thank you in advanced!. Andr? -- View this message in

Hello, I have a lots of questions about xen. Also, i would like to explore the code in order to have a better understand of (i hope) how xen works. I have untar the source code, but i''m really lost. I''m a newbie in thatbut i want to learn how to read the code. Can someone tell me how the archive is organized ? What folders are important or not ? In fact, i would

There exists a plot 3d functions (or similar) in R? Thanks, ======================================== Cezar Freitas (ICQ 109128967) IMECC - UNICAMP Campinas, SP - Brasil -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe"

Hi i'm a new user but rsync is easy and a great tool I have a folder caled source and a folder caled destini, like this + Source |_ FolderA |____ File1 |____ File2 + Destini I use this comando to sync only File 1 rsync -a Souce/FolderA/File1 Destini it's copy the File 1 to Destini but i would like who rsync create te Folder A in the destini and put the File 1 inside Then. I read

Dear R folks, We completed a matched case-control study that was analyzed using conditional logistic regression. Because of the small sample size we need to calculate exact confidence intervals. The quick solution is to purchase LogExact by Cytel. However, we'd like to do this in R. Anyone have experience with this? Many thanks, Tomas ____________________________________ Tomas Aragon, MD,

hi All, thanks for the responses. After being dropped into the # Filesystem repair prompt, ( on account of "inode 27344909 has illegal blocks" ) following warm reboot (via "reboot") after finding (SAN ) filesystem in read-only mode yesterday morning (possibly because of HBA fault on SAN) , I ran fsck -r /data (Linux version 2.6.18-92.1.18.el5 , Red Hat 4.1.2-42 , ext3

Hi I am new user of R. I came to know it is a GNU General public License software like Linux. Does any one know of literature evidence of 'R'( not S-plus) usage for Commercial purposes or R being used by any Government organisation. srinivas __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger

I want to superimpose histograms from three populations onto the same graph, changing the shading of the bars for each population. After consulting the help files and the archives I cannot find out how to do this (seemly) simple graph. To be clear, I want - a single x axis (from -3 to 18) - three groups of bars forming the histograms of each population (they will not overlap much, but this is

How I make the below matrix | a^0 0 0 ... 0 | | a^1 a^0 0 ... 0 | | a^2 a^1 a^0 ... 0 | | . | | . | | . | | a^n a^(n-1) a^(n-2) ... a^0 | with no loops, where "a" is a constant? ======================================================================== C?zar de Freitas Depto. de Estat?stica - UFPE Recife - Pernambuco - Brasil

Hi I am trying to carry out some maximum likelihood estimation and I'm not making much headway, and I'm hoping that someone will be able to point me in the right direction. I am modelling mortality statistics. One way to do this is to model the mortality rate (or, more accurately, log of the mortality rate, log_m) as (say) a constant plus a proportion of age, plus time, so: r_1 <-

hi All, Re below - thanks for the replies to the fsck question. I have run fsck -r /data and this eventually completed with several changes made. Now I am getting the following error from the qla2xxx driver on boot . . . qla2xxx 0000:05:0d.0: Mailbox command timeout occured. Scheduling ISP abort. qla2xxx 0000:05:0d.0: Mailbox command timeout occured. Scheduling ISP abort. . etc . It looks

Still doesn't work for that user... for works for another user: [root at roquefort samba]# cp -av ./lib64/python2.6/site-packages/samba/samdb.py ./lib64/python2.6/site-packages/samba/samdb.py.bak « ./lib64/python2.6/site-packages/samba/samdb.py » -> « ./lib64/python2.6/site-packages/samba/samdb.py.bak » [root at roquefort samba]# vi ./lib64/python2.6/site-packages/samba/samdb.py [root