Re: [R] Deleting colmuns with 0's and also writing multple csv files

2010-02-18 Thread Peter Dalgaard
(Forgot to cc. reply to K. Elo, apologies if you get it twice) K. Elo wrote: Dear Anna, 19.02.2010 08:17, Anna Carter wrote: (1) If the dataset contains some variables having all the entries = 0 and while analysing I want to delete those pericular columns, how do acheive this. i.e. Let's sup

Re: [R] Deleting colmuns with 0's and also writing multple csv files

2010-02-18 Thread RICHARD M. HEIBERGER
> (2)  Suppose I have variable no of datasets 'say n = 10'. I wish to write a > loop assigning each of these datasets to diffrent csv files e.g. > > for (i in 1:10) >  { > write.csv(data.frame(dataset[,,i]), 'data_set[i].csv', row.names = FALSE) >  } > > The result of this command is generation of

Re: [R] problem with RGtk

2010-02-18 Thread David Winsemius
On Feb 18, 2010, at 11:32 PM, Wincent wrote: Have you tried install GTK2 manually first? It can be downloaded from http://r.research.att.com/gtk2-runtime.dmg That is for Tiger builds. HTH Ronggui On 19 February 2010 10:02, Anna Oganyan wrote: Dear List, I would like to ask about pac

Re: [R] Deleting colmuns with 0's and also writing multple csv files

2010-02-18 Thread David Winsemius
On Feb 19, 2010, at 1:36 AM, K. Elo wrote: Dear Anna, 19.02.2010 08:17, Anna Carter wrote: (1) If the dataset contains some variables having all the entries = 0 and while analysing I want to delete those pericular columns, how do acheive this. i.e. Let's suppose 'df' is your data frame, the

Re: [R] Deleting colmuns with 0's and also writing multple csv files

2010-02-18 Thread K. Elo
Dear Anna, 19.02.2010 08:17, Anna Carter wrote: > (1) If the dataset contains some variables having all the entries = 0 > and while analysing I want to delete those pericular columns, how do > acheive this. i.e. Let's suppose 'df' is your data frame, then: subset(df, select=which(colSums(df)!=0)

Re: [R] color graph in multiple plots

2010-02-18 Thread David Winsemius
On Feb 19, 2010, at 12:38 AM, Roslina Zakaria wrote: Hi, I would like to distinguish my plots using colors but I got error message. How do I correct that? plot(ecdf(z), main ="CDF for observed and simulated weighted sum",type="l",lwd=2,col="blue", xlab="Weighted sum (mm)", ylab="Cumula

[R] Deleting colmuns with 0's and also writing multple csv files

2010-02-18 Thread Anna Carter
Dear R helpers,   I have two queries.   (1) If the dataset contains some variables having all the entries = 0 and while analysing I want to delete those pericular columns, how do acheive this. i.e.   dataset1   sr_no    var1  var2   var3    var4    var5 1   5   0   

Re: [R] problem with RGtk

2010-02-18 Thread David Winsemius
I take back what I said about not being able to use RGtk2 with the 64- bit mac. I (just today, for the first time ) can now get RGtk2 to load and then to get rgl to run properly. I had been able to run rgl in the 32 bit system but that was not satisfactory. I had earlier installed the 2.18

[R] color graph in multiple plots

2010-02-18 Thread Roslina Zakaria
Hi,   I would like to distinguish my plots using colors but I got error message.  How do I correct that?     plot(ecdf(z), main ="CDF for observed and simulated weighted sum",type="l",lwd=2,col="blue", xlab="Weighted sum (mm)", ylab="Cumulative Percent", xlim=c(0,15), xaxs ='i', yaxs ='i',ylim=c

Re: [R] problem with RGtk

2010-02-18 Thread Wincent
Have you tried install GTK2 manually first? It can be downloaded from http://r.research.att.com/gtk2-runtime.dmg HTH Ronggui On 19 February 2010 10:02, Anna Oganyan wrote: > Dear List, > I would like to ask about package RGtk2 with which I have a problem. > I will very much appreciate if somebo

[R] problem with RGtk

2010-02-18 Thread Anna Oganyan
Dear List, I would like to ask about package RGtk2 with which I have a problem. I will very much appreciate if somebody could tell me what I need to do. I need to install a package scdMicro and it depends on gWidgetsRGtk2. I am working on MAC, version 10.5.8. When I try to load gWidgetsRGtk2 (or R

[R] Set Colour of Histogram Bars (lattice)

2010-02-18 Thread DarioAustralia
Hello there, I have a bunch of histogram bars that I'd like the first to be a certain colour, second to be another colour, third to be a third colour, and repeat for all my 39 bars. I thought this was the way to go, but I get the same cyan coloured bars for all the bars. I did a vector of 3 colo

Re: [R] Use of R in clinical trials

2010-02-18 Thread myrmail
I am old enough to have lived through this particular transition. Prior to the advent of SAS, trials were analyzed by in-house written programs (usually in Fortran maybe with the help of IMSL). These programs were huge card decks. Having the card reader eat a card half way through reading the deck

Re: [R] sql query variable

2010-02-18 Thread RagingJim
Thanks guys. I ended up doing as you suggested Dieter. Thanks for the idea :) -- View this message in context: http://n4.nabble.com/sql-query-variable-tp1558189p1561158.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.

Re: [R] lint for R? and debugging

2010-02-18 Thread luke
On Tue, 16 Feb 2010, Esmail wrote: On 16-Feb-10 09:03, Karl Ove Hufthammer wrote: On Tue, 16 Feb 2010 08:00:09 -0500 Esmail wrote: And along the same lines, any type of interactive debugging utility for R? See this article in R News: 'Debugging Without (Too Many) Tears' http://cran.r-proje

Re: [R] running means

2010-02-18 Thread RagingJim
Ok, took me a while, but I figured it out. Because my running mean had less years than my standard rainfall graph, when I overlaid the running mean onto the rainfall it was trying to stretch out. So I just plotted both onto the same graph., like so: barplot(Ann,main=title, xlab="Year",ylab="Rainf

Re: [R] Appending Data to A n Existing List...

2010-02-18 Thread Jason Rupert
Thanks for all the replies! I think I posted a poor example, but now I understand that you can name entries in a list. That is really neat. Before I was just letting them default, which is kind of problematic. I think I also came across another way and also used the suggestion from Bert

Re: [R] Subtracting one based on an If

2010-02-18 Thread Ista Zahn
I think you can just use CondoLots[CondoLots > 1] <- CondoLots[CondoLots > 1] -1 -Ista __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and pr

[R] Subtracting one based on an If

2010-02-18 Thread LCOG1
For the following: Bldgid<-c(1000,1000,1000,1001,1002,1003,1003,1003) Maplot<-c(2,20001,20002,3,30001,4,40001,40002) Area<-c(40,170,160,50,100,100,90,110) #Construct Sample dataframe MultiLotBldgs..<-data.frame(Bldgid,Maplot,Area) CondoLots_ <- tapply(MultiLotBldgs..$Maplot, Mul

Re: [R] problem with multiple plots (mfrow, mar)

2010-02-18 Thread Peter Neuhaus
Greg Snow wrote: Use outer margins. Try something like: par(mfrow=c(3,1), mar=c(0,4,0,2)+0.1, oma=c(5,0,3,0)+0.1 ) Then do your plots without resetting margins. Thanks. Perfect! This little detail has been bothering me for quite a while... Also you can use xaxt='n' rather than axes=FALS

Re: [R] Graphics Question

2010-02-18 Thread RICHARD M. HEIBERGER
## The grouped boxplot is one of the features included in the HH package. ## You will need to install HH if you do not yet have the HH package ## A similar example is posted on my website ##http://astro.ocis.temple.edu/~rmh/HH/bwplot-color.pdf ## This is fake data which I hope mimics the struc

Re: [R] svm and RMSE

2010-02-18 Thread Amy Hessen
Hi Thank you very much for your reply. I meant I got different RMSE with different runs to the same program without any change for the dataset or the parameters of SVM. This is my code: library(e1071) readingmydata <- as.matrix(read.delim("mydataset.txt")) train.x <- readingmydata[,-1] trai

Re: [R] Appending Data to A n Existing List...

2010-02-18 Thread Bert Gunter
?c but you have to make sure z is a list: c(pts,z) ## probably is not what you want c(pts,list(z)) ## probably is, but z will be unnamed c(pts,list(z=z) ## names z "z" Cheers, Bert Gunter Genentech Nonclinical Biostatistics -Original Message- From: r-help-boun...@r-project.org

Re: [R] survey package question

2010-02-18 Thread Thomas Lumley
On Thu, 18 Feb 2010, Richard Valliant wrote: Should the svyby function be able to work with svyquantile? I get the error below ... It works, but you need to either specify ci=TRUE or keep.var=FALSE. The problem is that svyquantile() by default does not produce standard errors. svyby(~api0

Re: [R] Appending Data to A n Existing List...

2010-02-18 Thread David Winsemius
On Feb 18, 2010, at 6:15 PM, Jason Rupert wrote: What steps can be take to append data to a list? Suppose I have the following list and want to append a z axist to the list? pts <- list(x=cars[,1], y=cars[,2]) z<-rnorm(max(dim(cars))) How would I go about appending z to an existing list?

[R] 2 ecdf from different set of data

2010-02-18 Thread Roslina Zakaria
Hi r-users,   I have 2 sets of data and I would like to superimpose this cumulative density in one graph.   I know how to put the 2 graphs in one same graph but my problem is the data are different.   > z[1:20]  [1]  2.02347388  3.19514379  0.05188875  1.41333812  3.50249892  4.34272676  6.6563

[R] Appending Data to A n Existing List...

2010-02-18 Thread Jason Rupert
What steps can be take to append data to a list? Suppose I have the following list and want to append a z axist to the list? pts <- list(x=cars[,1], y=cars[,2]) z<-rnorm(max(dim(cars))) How would I go about appending z to an existing list? Thanks a ton... ___

Re: [R] Use of R in clinical trials

2010-02-18 Thread Marc Schwartz
On Feb 18, 2010, at 4:26 PM, Christopher W. Ryan wrote: > Anyone have any recollection of Prophet software, from the National (US) > Center for Research Resources? > > --Chris A quick Google search comes up with a very dated site at Northwestern: http://www.basic.northwestern.edu/biotools/pr

Re: [R] Use of R in clinical trials

2010-02-18 Thread Christopher W. Ryan
Anyone have any recollection of Prophet software, from the National (US) Center for Research Resources? --Chris Christopher W. Ryan, MD SUNY Upstate Medical University Clinical Campus at Binghamton 425 Robinson Street, Binghamton, NY 13904 cryanatbinghamtondotedu "If you want to build a ship,

Re: [R] Use of R in clinical trials

2010-02-18 Thread Marc Schwartz
On Feb 18, 2010, at 3:50 PM, Nordlund, Dan (DSHS/RDA) wrote: >> -Original Message- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On >> Behalf Of Peter Dalgaard >> Sent: Thursday, February 18, 2010 12:44 PM >> To: Douglas Bates >> Cc: r-help@r-project.org; Bert

[R] Univariate Normal Mixtures - HELP

2010-02-18 Thread vaibhav dua
Hi, I'm generating a mixture of 2 univariate normal distributions using norMix and rnorMix and would like to put a constraint on Mean (Equal). here is my code snippet: library(nor1mix) X <- norMix(mu=c(50, 60 ), sig2=c(5,10), w=c(0.5, 0.5)) mixData <- rnorMix(1000, X) plot(mixData, type="l"

Re: [R] cluster analysis

2010-02-18 Thread Steve_Friedman
Without know what your data set really looks like, I'd look to decision trees - specifically package rpart and use method = classify. Your problem may not be appropriate in that environment, but it is hard to say with limited explanation of issues. good luck Steve Friedman Ph. D. Spatial Statist

Re: [R] plot more series or more colors

2010-02-18 Thread joonR
Thanks for helping! -- View this message in context: http://n4.nabble.com/plot-more-series-or-more-colors-tp1556751p1560863.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman

[R] Possible to save workspace image including packages and class definitions?

2010-02-18 Thread Janko Thyson
Hi everyone! Is it possible to save an image of the workspace where 1) Packages 2) Classes are saved along with the image? Until now I only managed to save an workspace image that contained all variables (including functions). When loading this image back into a new session, p

[R] cluster analysis

2010-02-18 Thread Dong He
Hi Folks, I want to apply cluster analysis on a categorical data set, could you recommend me some R package and suggestion? Thanks! Dong [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/l

Re: [R] problem with multiple plots (mfrow, mar)

2010-02-18 Thread Greg Snow
Use outer margins. Try something like: > par(mfrow=c(3,1), mar=c(0,4,0,2)+0.1, oma=c(5,0,3,0)+0.1 ) Then do your plots without resetting margins. Also you can use xaxt='n' rather than axes=FALSE to suppress just the x axis and not have to do the y axis and box by hand. Hope this helps, -- G

Re: [R] Use of R in clinical trials

2010-02-18 Thread Nordlund, Dan (DSHS/RDA)
> -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf Of Peter Dalgaard > Sent: Thursday, February 18, 2010 12:44 PM > To: Douglas Bates > Cc: r-help@r-project.org; Bert Gunter > Subject: Re: [R] Use of R in clinical trials > > > >> (C

Re: [R] non-linear contrained optimization

2010-02-18 Thread Ravi Varadhan
Hi, I have a nonlinear constrained optimization code that can handle nonlinear (and linear) constraints. Send me an email if you are interested. There is also a package available on R-forge, called Rsolnp. Hope this is helpful, Ravi.

[R] Graphics Question

2010-02-18 Thread Lanna Jin
Hello All, I'm having some issues controlling graphics in R. I was wondering if anyone may help me tackle this problem: Given a data frame "X" with variables "Year", "Factor" (w/ n groups), and "Freq" How do I create a single graphic with the following plots aligned in a vertical stack? 1. box

Re: [R] how to execute R script piece by piece on SSH terminal

2010-02-18 Thread Vojtěch Zeisek
Hello, if You run R in terminal, You can type R to start the R software, then use command source("/path/to/your/script") to load the script and then You call functions from the script as usual. Optionally, You can move to the directory with script with command setwd("/path/to/the/directory"). Or

Re: [R] how to execute R script piece by piece on SSH terminal

2010-02-18 Thread Sarah Goslee
At the very simplest level, you can open the R script in a text editor. Then start R at the command line in the terminal by typing R and then copy and paste the desired lines from the text file into the terminal. There are plenty of more elegant and complex solutions, but that one is easy and will

[R] lme - incorporating measurement error with estimated V-C matrix

2010-02-18 Thread Todd Ogden
I have data (each Y_i is a vector) in the form of Y_i = X_i \beta_i + Z_i b_i + epsilon_i Were it not for the measurement error (the epsilon_i) it's a very simple model --- nice and balanced, compound symmetry, and I'd just use lme(y ~ x1 + x2, random=~1|subj, ...) but the measurement

Re: [R] Use of R in clinical trials

2010-02-18 Thread Peter Dalgaard
(Corrections/additional information welcome!) My recollection is that the BMD programs (which, in a later version, became BMDP) predated SAS and were specifically for BioMeDical analysis. How could I forget those! Yes, my old (as in 1980-1985) boss at the University hospital even had the

[R] how to execute R script piece by piece on SSH terminal

2010-02-18 Thread xinwei
hi, I am new to Linux and R environment. I have a existing R script. I wonder how to open my R script on Linux platform and execute selected written R command? thanks Xin __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help

Re: [R] Extracting values from a list

2010-02-18 Thread chipmaney
Thanks, as a follow-up, how do i extract the list element name (ie, 4-2 or 44-1) thanks, chipper Date: Thu, 18 Feb 2010 11:56:45 -0800 From: ml-node+1560750-540257540-69...@n4.nabble.com To: chipma...@hotmail.com Subject: Re: Extracting values from a list Try this: sapply(x, '[', 'p.value

Re: [R] Extracting values from a list

2010-02-18 Thread Henrique Dallazuanna
Try this: sapply(x, '[', 'p.value') On Thu, Feb 18, 2010 at 5:21 PM, chipmaney wrote: > > I have run a kruskal.test() using the by() function, which returns a list of > results like the following (subset of results): > > Herb.df$ID: 4-2 >       Kruskal-Wallis chi-squared = 18.93, df = 7, p-value

Re: [R] popbio and stochastic lambda calculation

2010-02-18 Thread Chris Stubben
Shawn Morrison-2 wrote: > > # The paper reports a 95% CI of 0.79 - 1.10 > # "My" reproduced result for the CIs is much larger, especially on the > upper end. Why would this be? > # The authors report using the 'delta' method (Caswell, 2001) to > calculate the CI in which the > > Shawn, I p

Re: [R] Extracting values from a list

2010-02-18 Thread Paul Hiemstra
chipmaney schreef: I have run a kruskal.test() using the by() function, which returns a list of results like the following (subset of results): Herb.df$ID: 4-2 Kruskal-Wallis chi-squared = 18.93, df = 7, p-value = 0.00841 ---

Re: [R] Use of R in clinical trials

2010-02-18 Thread Bert Gunter
Yes, Doug is correct and I'm wrong. In fact, his comment jogged MY memory -- I actually used BMDP a bit in the late 70's(I think it was). Thanks to Doug for corrected chronology. Bert Gunter Genentech Nonclinical Biostatistics -Original Message- From: r-help-boun...@r-project.org [ma

Re: [R] logistic regression - what is being predicted when using

2010-02-18 Thread Ted Harding
On 18-Feb-10 18:58:57, Dimitri Liakhovitski wrote: > Dear gurus, > I've analyzed a (fake) data set ("data") using logistic regression > (glm): > > logreg1 <- glm(z ~ x1 + x2 + y, data=data, family=binomial("logit"), > na.action=na.pass) > > Then, I created a data frame with 2 fixed levels (0 and

Re: [R] Use of R in clinical trials

2010-02-18 Thread Jeff Laake
I am old enough. Memory isn't always reliable but Doug Bates recounting is what I remember and a quick search has BMDP developed in 1961 and SAS in 1966. To my surprise, the search produced a site that offered BMDP for sale. On 2/18/2010 11:15 AM, Peter Dalgaard wrote: Christopher W. Ryan w

[R] Extracting values from a list

2010-02-18 Thread chipmaney
I have run a kruskal.test() using the by() function, which returns a list of results like the following (subset of results): Herb.df$ID: 4-2 Kruskal-Wallis chi-squared = 18.93, df = 7, p-value = 0.00841 Herb.df$ID: 44-1

Re: [R] Use of R in clinical trials

2010-02-18 Thread Cody Hamilton
Points regarding the advantages of LaTex are very well taken. If I were fortunate enough to have complete ownership of the document (as might be the case with a DSMB report produced by the Biostat group), then LaTex would be a wonderful choice.  Though I am not a LaTex user, I can easily imagine

Re: [R] Use of R in clinical trials

2010-02-18 Thread Peter Dalgaard
Christopher W. Ryan wrote: Pure Food and Drug Act: 1906 FDA: 1930s founding of SAS: early 1970s (from the history websites of SAS and FDA) What did pharmaceutical companies use for data analysis before there was SAS? And was there much angst over the change to SAS from whatever was in use bef

Re: [R] Use of R in clinical trials

2010-02-18 Thread Douglas Bates
On Thu, Feb 18, 2010 at 12:36 PM, Bert Gunter wrote: > The key dates are 1938 and 1962. The FDC act of 1938 essentially mandated > (demonstration of) safety. The tox testing infrastructure grew from that.At > that time, there were no computers, little data, little statistics > methodology. Statist

Re: [R] Use of R in clinical trials

2010-02-18 Thread Rolf Turner
On 19/02/2010, at 1:12 AM, John Sorkin wrote: > It is easy to devolve into visceral response mode, lose objectivity and slip > into intolerance. R, S, S-Plus, SAS, PASW (nee SPSS), STATA, are all tools. > Each has strengths and weaknesses. No one is inherently better, or worse than > the other

Re: [R] svm regression

2010-02-18 Thread Uwe Ligges
On 18.02.2010 19:43, madhu sankar wrote: Hi, I am having trouble with svm regression.it is not giving the right results. example model<- svm(dataTrain,classTrain,type="eps-regression") predict(model, dataTest) 36 37 38 39 40 41 42 -13.838257

Re: [R] svm regression

2010-02-18 Thread Uwe Ligges
On 18.02.2010 17:54, madhu sankar wrote: Hi, I am trying to use svm for regression data. this is how my data looks like: dataTrain x y z 1 4 6 2 5 4 3 7 5 classTrain a 2 3 4 dataTest x y z 1 7 2 2 8 3 classTest a 3 4 5 building the model model<-svm(dataTrain,cl

[R] Natural Language Processing of R help archives

2010-02-18 Thread Harsh
Hi useRs, This is not so much a help request as it is a request for feedback about the possibilities of using Natural Language Processing (NLP) techniques on the r-help archives for a more 'effective' retrieval of answers. A few points that may capture what I'm trying to get at: 1) R has an emergi

[R] logistic regression - what is being predicted when using predict - probabilities or odds?

2010-02-18 Thread Dimitri Liakhovitski
Dear gurus, I've analyzed a (fake) data set ("data") using logistic regression (glm): logreg1 <- glm(z ~ x1 + x2 + y, data=data, family=binomial("logit"), na.action=na.pass) Then, I created a data frame with 2 fixed levels (0 and 1) for each predictor: attach(data) x1<-c(0,1) x2<-c(0,1) y<-c(0,1

Re: [R] Funny result from rep(...) procedure

2010-02-18 Thread Henrik Bengtsson
What does print(as.integer(branches)) give? That is what rep() uses. /H On Thu, Feb 18, 2010 at 7:49 PM, dkStevens wrote: > > I could send the entire bit of code but I was hoping that someone would > recognize the issue from past experience. I may be an artifact of other > parts of the code.

Re: [R] Building R from source

2010-02-18 Thread Uwe Ligges
On 17.02.2010 15:38, rkevinbur...@charter.net wrote: Thank you for the tip. I was used to inserting write statements and was surpised when it didn't work and reading this section I see that I shouldn't have been doing this anyway. One more question. Is there another call that I can use to prin

Re: [R] Funny result from rep(...) procedure

2010-02-18 Thread dkStevens
I could send the entire bit of code but I was hoping that someone would recognize the issue from past experience. I may be an artifact of other parts of the code. I observed the problem in a larger context and cut out all that you see below. The comments were next to the results to clarify. Ap

Re: [R] Funny result from rep(...) procedure

2010-02-18 Thread dkStevens
That's what I did. 'branches' was shown at the top. branches = c(5,6,5,5,5) I tested this. When I copy and paste into R 10.0 I get the result in the post. Perhaps I should reinstall R. I guess I don't see how much more narrow I can get than this. i iInd = 1 for(i in 1:length(branches)

[R] svm regression

2010-02-18 Thread madhu sankar
Hi, I am having trouble with svm regression.it is not giving the right results. example > model <- svm(dataTrain,classTrain,type="eps-regression") > predict(model, dataTest) 36 37 38 39 40 41 42 -13.838257 -1.475401 10.502739 -3.047656 -8.71369

Re: [R] error in using sample( )

2010-02-18 Thread Dennis Murphy
Works for me: > sample(c(0,1,2),1,prob=c(0.2,0.3,0.5)) [1] 2 On Thu, Feb 18, 2010 at 7:48 AM, wrote: > Hi, > > I am using the command > > >sample(c(0,1,2),1,prob=c(0.2,0.3,0.5)) > > and I have this error notification > > "Error in sample(c(0,1,2),1,prob=c(0.2,0.3,0.5)): > unused argument(s)(1

Re: [R] Hmisc summary.formula.reverse

2010-02-18 Thread Frank E Harrell Jr
Abhijit Dasgupta wrote: Hello, Can summary.formula.reverse be customized to allow other summary statistics to be reported rather than the quartiles and mean +/- sd? The Not easily. I'm not sure which other statistics would be descriptive however; certainly not the min and max or standard e

Re: [R] Procedure not working for actual data

2010-02-18 Thread Bert Gunter
?traceback may be useful. Bert Gunter Genentech Nonclinical Biostatistics -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of jim holtman Sent: Thursday, February 18, 2010 10:17 AM To: ROLL Josh F Cc: r-help@r-project.org Subject: R

Re: [R] Funny result from rep(...) procedure

2010-02-18 Thread Henrik Bengtsson
On Thu, Feb 18, 2010 at 7:15 PM, Erik Iverson wrote: > > > Erik Iverson wrote: >> >> Cannot reproduce, what is branches?  If you can narrow it down to a >> "commented, minimal, self-contained, reproducible" example, you're far more >> likely to get help from the list. >> > > My blinded guess thoug

Re: [R] Use of R in clinical trials

2010-02-18 Thread Bert Gunter
The key dates are 1938 and 1962. The FDC act of 1938 essentially mandated (demonstration of) safety. The tox testing infrastructure grew from that.At that time, there were no computers, little data, little statistics methodology. Statistics played little role -- as is still mainly the case today fo

[R] error in using sample( )

2010-02-18 Thread jxia
Hi, I am using the command >sample(c(0,1,2),1,prob=c(0.2,0.3,0.5)) and I have this error notification "Error in sample(c(0,1,2),1,prob=c(0.2,0.3,0.5)): unused argument(s)(1,prob=c(0.2,0.3,0.5)) I don't know what is going wrong. Please give me some suggestions. Thank you Best, Jing ___

[R] Plot spatial location by using azimuth and distance?

2010-02-18 Thread Jian Zhang
Hey, I have one data like this: tree azimuth distance 1 312 200 2 322 201 3 304 173 4 294 154 5 313 95 The "azimuth" stands for the azimuth of tree from plot center, and the "distance" is the distance of tree from plot center. I wan

Re: [R] Procedure not working for actual data

2010-02-18 Thread ROLL Josh F
Hey Jim, That appears to work properly with my larger data set. That's really strange to me though, why would my procedure not work even though the test works correctly? I have always coded under the assumption that the code doesn't do anything the user doesn't tell it too but I cant see a p

Re: [R] Checking the assumptions for a proper GLM model

2010-02-18 Thread Jay
Well, yes and no. Obviously I was not asking for the complete recap of a all the theory on the subject. My main concern is finding readily available CRAN functions and packages that would help me in the process. I've found the UCLA site to be very informative and spent a lot of time ther the last c

Re: [R] skip lapply item for conditions(RAM, execution time)

2010-02-18 Thread Joachim Harloff
Thank you, but: - How do I create a condition object watching for memory overflow? Or, alternatively, excess time? - How do I tell R to end the current lapply item, clean up memory and proceed to the next item? (I know I can write a wrapper function including gc() and direct lapply to that wra

[R] Changed results in analyses run in sem and nlme ??

2010-02-18 Thread Claire Lay
I'm uncertain how helpful it will be to give example code, but last week, this model gave an error message to the tune of "failed to converge" after about 5 minutes of run-time : library(nlme) model.A<- lme (fixed = avbranch~ wk*trt*pop , random = ~wk|ID/fam/pop, data=branch) It seemed

[R] 3D plot

2010-02-18 Thread David A.G
Dearl list, can anyone point me to a function or library that can create a graph similar to the one in the following powerpoint presentation? http://bmi.osu.edu/~khuang/IBGP705/BMI705-Lecture7.ppt (pages 36-37) In order to try to explain the graph, the way I see it in R terms is something li

[R] survey package question

2010-02-18 Thread Richard Valliant
Should the svyby function be able to work with svyquantile? I get the error below ... data(api) dclus1<-svydesign(id=~dnum, weights=~pw, data=apiclus1, fpc=~fpc) svyby(~api00, design=dclus1, by = ~stype, quantiles=c(.25,.5,.75), FUN=svyquantile, na.

Re: [R] Funny result from rep(...) procedure

2010-02-18 Thread Eik Vettorazzi
Sorry, not reproducible. This works for me (as expected): branches<-c(5,6) iInd = 1 for(i in 1:length(branches)) { print((1:branches[i])+iInd-1) # iInd is a position shift of the index ni = branches[i] print(i) print(ni) print(c(ni,rep(i,times=ni))) # ... some interesting other

Re: [R] Procedure not working for actual data

2010-02-18 Thread jim holtman
Even though it may work for a small subset, it can still break on larger sets. Your code was doing a number of 'unlist' and tearing apart the data and it is possible that some of the transformations were not aligned with the data in the way you thought them to be. What you need to do in that case

Re: [R] Extract p-value from aftreg object

2010-02-18 Thread David Winsemius
On Feb 18, 2010, at 12:33 PM, David Winsemius wrote: I don't seem to have the unnamed package loaded that has aftreg(), but in general you ought to be able to get what you want by looking not just at the aftreg-object but also at the print(aftreg)-object using str(). Trying that approach

Re: [R] Funny result from rep(...) procedure

2010-02-18 Thread Erik Iverson
Erik Iverson wrote: Cannot reproduce, what is branches? If you can narrow it down to a "commented, minimal, self-contained, reproducible" example, you're far more likely to get help from the list. My blinded guess though, is something to do with FAQ 7.31.

Re: [R] Funny result from rep(...) procedure

2010-02-18 Thread Erik Iverson
Cannot reproduce, what is branches? If you can narrow it down to a "commented, minimal, self-contained, reproducible" example, you're far more likely to get help from the list. dkStevens wrote: I'm observing odd behavior of the rep(...) procedure when using variables as parameters in a loop.

Re: [R] Use of R in clinical trials

2010-02-18 Thread Christopher W. Ryan
Pure Food and Drug Act: 1906 FDA: 1930s founding of SAS: early 1970s (from the history websites of SAS and FDA) What did pharmaceutical companies use for data analysis before there was SAS? And was there much angst over the change to SAS from whatever was in use before? Or was there not such

Re: [R] an error about " return some vectors from some functions within a function"

2010-02-18 Thread jim holtman
Might be the case that the 'while' loop was not executed and therefore 'ck1' was not defined. You might put a check to see if that was happening. Also you are incrementing 'count1' in the functions and it is not being passed in as a parameter. What are you expecting it to do? Is it defined in t

[R] Hmisc summary.formula.reverse

2010-02-18 Thread Abhijit Dasgupta
Hello, Can summary.formula.reverse be customized to allow other summary statistics to be reported rather than the quartiles and mean +/- sd? The "fun" option apparently doesn't apply when method='reverse' Thanks -- Abhijit Dasgupta, PhD Statistician | Clinical Sciences Section | NIAMS/NIH

[R] Funny result from rep(...) procedure

2010-02-18 Thread dkStevens
I'm observing odd behavior of the rep(...) procedure when using variables as parameters in a loop. Here's a simple loop on a vector 'branches' that is c(5,6,5,5,5). The statement in question is print(c(ni,rep(i,times=ni))) that works properly first time through the loop but the second

Re: [R] subset() for multiple values

2010-02-18 Thread Erik Iverson
subset(df, x %in% c(...)) chipmaney wrote: This code works: subset(NativeDominant.df,!ID=="37-R17") This code does not: Tree.df<-subset(NativeDominant.df,!ID==c("37-R17","37-R18","10-R1","37-R21","37-R24","R7A-R1","3-R1","37-R16")) how do i get subset() to work on a range of values? ___

Re: [R] subset() for multiple values

2010-02-18 Thread Henrique Dallazuanna
Use ' %in%': Tree.df<-subset(NativeDominant.df,!ID %in% c("37-R17","37-R18","10-R1","37-R21","37-R24","R7A-R1","3-R1","37-R16")) On Thu, Feb 18, 2010 at 3:59 PM, chipmaney wrote: > > This code works: > > subset(NativeDominant.df,!ID=="37-R17") > > > This code does not: > > Tree.df<-subset(Native

[R] subset() for multiple values

2010-02-18 Thread chipmaney
This code works: subset(NativeDominant.df,!ID=="37-R17") This code does not: Tree.df<-subset(NativeDominant.df,!ID==c("37-R17","37-R18","10-R1","37-R21","37-R24","R7A-R1","3-R1","37-R16")) how do i get subset() to work on a range of values? -- View this message in context: http://n4.nabbl

Re: [R] Extract p-value from aftreg object

2010-02-18 Thread Göran Broström
2010/2/18 Philipp Rappold : > Dear all, > > does anyone know how I can extract specific p-values for covariates from an > aftreg object? After fitting a model with aftreg I can find all different > variables by using str(), but there's no place where p-values are kept. The > odd thing is that print

Re: [R] AFTREG with ID argument

2010-02-18 Thread Göran Broström
2010/2/18 Philipp Rappold : > Göran, David, > > in order to adapt aftreg to my needs I wrote a little function that I would > like to share with you and the community. I once promised to fix this 'asap'. Now I promise to do it tonight. OK? Göran > > > WHAT DOES IT FIX? > > (1) Using the id-argum

Re: [R] Extract p-value from aftreg object

2010-02-18 Thread David Winsemius
I don't seem to have the unnamed package loaded that has aftreg(), but in general you ought to be able to get what you want by looking not just at the aftreg-object but also at the print(aftreg)-object using str(). On Feb 18, 2010, at 11:07 AM, Philipp Rappold wrote: Dear all, does anyo

[R] an error about " return some vectors from some functions within a function"

2010-02-18 Thread Nai-Wei Chen
Dear all, When I try to return some vectors from some functions within a function, it indicate an error," Error in rbind(ck1, ck2, ck3) : object 'ck1' not found", in one of the iterations and stop.  Since I am not experienced in programming, can anyone give me a suggestion to inspect this

[R] problem with multiple plots (mfrow, mar)

2010-02-18 Thread Peter Neuhaus
Dear R-users, I often stack plots that have the same x-axis. To save space and have the plots themselves as large as possible I like to minimize the margins between the plots to zero. I use the "mfrow" and "mar" parameters to achieve this. However, the different margin settings for the individua

Re: [R] Use of R in clinical trials

2010-02-18 Thread Frank E Harrell Jr
Bert, I have to disagree with just part of what you said. The ultimate savings by using R is astronomical. Up front it would definitely cost more, as you so eloquently stated. So it boils down to short-term vs. long-term thinking. More importantly, the statistical/graphical reports create

Re: [R] Use of R in clinical trials

2010-02-18 Thread Bert Gunter
DISCLAIMER: This represents my personal view and in no way reflects that of my company. Warning: This is a long harangue that contains no useful information on R. May be wise to delete without reading. -- Sorry folks, I still don't understand your comments. As Cody's original post pointe

Re: [R] Checking the assumptions for a proper GLM model

2010-02-18 Thread David Winsemius
At one time the "answer" would have been to buy a copy of Venables and Ripley's "Modern Applied Statistics with S" (and R), and that would still be a sensible strategy. There are now quite a few other R- centric texts that have been published in the last few years. Search Amazon if needed. Y

Re: [R] AFTREG with ID argument

2010-02-18 Thread Philipp Rappold
Göran, no worries - your help & advice is already invaluable! Göran Broström wrote: 2010/2/18 Philipp Rappold : Göran, David, in order to adapt aftreg to my needs I wrote a little function that I would like to share with you and the community. I once promised to fix this 'asap'. Now I promis

Re: [R] row indexes from logical statment

2010-02-18 Thread Dennis Murphy
Hi: You might also want to consider the use of subset, as in subset(foo, name == "A")or subset(foo, name %in% c("A", "B")) HTH, Dennis On Thu, Feb 18, 2010 at 8:01 AM, stephen sefick wrote: > Is there any easy way to pull out the row indexes for a logical > matching statment? > >

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