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Dear all, I am beginner using R. I have a question about it. When you use it, since it is written by so many authors, how do you know that the results are trustable?(I don't want to affend anyone, also I trust people). But I think this should be a question. Thanks, Ming

Dear all, I am beginner using R. I have a question about it. When you use it, since it is written by so many authors, how do you know that the results are trustable?(I don't want to affend anyone, also I trust people). But I think this should be a question. Thanks, Ming

Hi, I just get a question (sorry if it is a dumb one) and I "phase" my question in the following R codes: group1<-rnorm(n=50, mean=0, sd=1) group2<-rnorm(n=20, mean=1, sd=1.5) group3<-c(group1,group2) Now, if I am given a dataset from group3, what method (discriminant analysis, clustering, maybe) is the best to cluster them by using R. The known info includes: 2 clusters,

Dear all, I have the following data format cellnumber force 1 100 1 230 1 100 1 200 1 130 1 210 2 179 2 298 2 400 2 500 2 600 ........... I want to make a boxplot of the force according to the cellnumber. Here the cellnumber is actually a factor. It has 1, 2 two levels. How can I do that using boxplot? Thanks in advance Ming

Hi, I am looking for a package to do the clustering analysis using the expectation maximization algorithm. Thanks in advance. Ming

Ok, I've ALMOST got this working ... I can run deliver as a user, but when I try using it as the default delivery agent from sendmail, I get deliver(userid): net_connect(/var/run/dovecot/auth-master) failed: Permission denied Does deliver run as root, as the recipient's ID, sendmail's ID or sendmail's GID? (I'm running freebsd) Or am I totally clueless ?? Here is dovecot

Hi,there I'm doing some R batch jobs in Unix. Something like R <prog1> output1 --save & R <prog2> output2 --save & prog1 and prog2 are running at the same time and they are essentially same except it contains different parameter values. I was wondering if two processes will affect each other? Hopefully they are two independent jobs. It's a beginner's question

Dear all, I have a beginner's R question for coxph() and survfit(). I have a data set with survival time (no censoring) and treatment indicator(0/1). I did something like fit<-coxph( Surv(t)~treat, method="breslow",data=data) > fit Call: coxph(formula = Surv(t) ~ treat, data = data, method = "breslow") coef exp(coef) se(coef) z p treat -1.96

Hello, I am interested in using ANOSIM (analysis of similarities) which is part of the vegan package. When I look at the programmers notes they mention that "They don't quite trust this method, and someone should study it closely." I was just wondering if this had been done, and whether it had been found reliable or not? Thanks, Kerry Reeves

Dear all, I want to use kernel estimator to smooth some step funtions such as the empirical distribution and hazard function in survival analysis. Is there a function or package to deal with it in R? How do I use it? Thanks for your help. Jimmy

I got wine working! This is awesome. Now all I need is sound. I use wine-20010216 and sound is fine under linux (alsa driver). Anyway here is the error I am getting: err:wave:DSDB_MapPrimary (0x40360894): Could not map sound device for direct access (errno=5) Any suggestion? Aaron

Dear all, I want to solve a score function by using Newton-Raphson algorithm. Is there such a fucntion in R? I know there's one called optim, but it seems only doing minimizing or maximizing. Thanks, Jimmy

What is plot.new? How can I fix this data or add plot.new so it works? > library(maps) > library(splancs) > area = 6*4 > lambda = 1.5 > N = rpois(1,lambda*area) > u = runif(N,-2,4) > v = runif(N,0,4) > plot(u,v,asp=1) > h = chull(u,v) > h = c(h,h[1]) > plot(u[h],v[h],"1",asp=1) Error in plot.xy(xy, type, ...) : invalid plot type '1' >

Hello, I installed wine 20010112 from source and can't get it to work. I had an old version on before, but I COMPLETELY removed it before I started. I'm sure -- I checked for libkernel32.so and others, and even took away the .wine directory. Anyway, so now I am getting this undefined symbol message: ---------------------------------------- [root@localhost cdrom]# wine HWSetup.EXE

What is plot.new? and how can i get it to work so i can load other data? > library(splancs) > area = 6*4 > lambda = 1.5 > N = rpois(1,lambda*area) > u = runif(N,-2,4) > v = runif(N,0,4) > plot(u,v,asp=1) > h = chull(u,v) > h = c(h,h[1]) > plot(u[h],v[h],"1",asp=1) Error in plot.xy(xy, type, ...) : invalid plot type '1' >