Re: [R] Panel data with binary dependent variable

2010-05-11 Thread yves croissant
To my knowledge, fixed and random effect models may be estimated for the logit model and only the random effect model for the probit model (because of the incidental parameter problem). I think clogit in the survival package fits the model that is called the fixed effect logit model in the

Re: [R] Advice needed on awkward tables

2010-05-11 Thread Greg Orm
Apologies. Let me clarify. I have included my code below : data.table.b represents the medical nomenclature, whereas data.table.a is a patient derived database. data.table.b$CATEGORY categorizes features (e.g. 'cardiac', 'respiratory'), whereas data.table.b$FEATURE is a corresponding disease

Re: [R] Robust SE Heteroskedasticity-consistent estimation

2010-05-11 Thread Arne Henningsen
On 11 May 2010 00:52, Achim Zeileis achim.zeil...@uibk.ac.at wrote: On Mon, 10 May 2010, RATIARISON Eric wrote: I'm using maxlik with functions specified (L, his gradient hessian). Now I would like determine some robust standard errors of my estimators. So I 'm try to use vcovHC, or hccm or

Re: [R] make: Nothing to be done for `all'.

2010-05-11 Thread Romain Francois
Le 11/05/10 04:16, Elizabeth Lawson a écrit : Hi, I just bought new macbook pro 10.6.3. I am trying to use some old c code that used to work. I tried to recompile the code. In the directory with code I used R CMD SHLIB hello.c and get the error make: Nothing to be done for `all'. I have

Re: [R] Advice needed on awkward tables

2010-05-11 Thread Jeff Newmiller
Greg Orm wrote: Dear r-help list members, I am quite new to R, and hope to seek advice from you about a problem I have been cracking my head over. Apologies if this seems like a simple problem. I would not call it exactly simple... but mostly because your data representation is so obscure.

[R] Smoothing Techniques - short stepwise functions with spikes

2010-05-11 Thread Ralf B
R Friends, I have data from which I would like to learn a more general (smoothened) trend by applying data smoothing methods. Data points follow a positive stepwise function. |x x | | xx

[R] Lattice: location of key inside a xyplot()

2010-05-11 Thread Jay
Hello, adding the line: space = 'inside' to my xyplot() call provides a partial solution to the problem I have.. However, this command puts the key in the left upper corner when I want in the left upper corner. Looking at the help provides no additional options for the inside, but surely this

[R] create a data.frame for aov

2010-05-11 Thread Yuan Jian
Hi R-experts, I try to find a way to transfer a matrix to a data.frame that is used as input of aov. can you give me advice for that? mdat - matrix(c(1,2,3, 11,12,13), nrow = 2, ncol=3, byrow=TRUE, dimnames = list(c(row1, row2), c(Col1, Col2, Col3))) mdat Col1 Col2 Col3 row1    1    2   

Re: [R] Fwd: R apply() help -urgent

2010-05-11 Thread Mike White
Set up a function for the fisher.test on a 2x2 table and then include this in the apply function for columns as in the example below. The result is a list with names A to Z # set up a dummy data set with 100 rows Cat-LETTERS[sample(1:6,100, replace=T)] GL-sample(1:6, 100, replace=T)

Re: [R] [Fwd: Re: Plotting log-axis with the exponential base to a plot with the default logarithm base 10]

2010-05-11 Thread Mark Difford
Elisabeth, You should listen to Ted (Harding). He answered your question with: the vertical axis is scaled logarithmically with the numerical annotations corresponding to the *raw* values of Y, not to their log-transformed values. Therefore it does not matter what base of logarithms is

Re: [R] Lattice: location of key inside a xyplot()

2010-05-11 Thread Dennis Murphy
Hi: Instead of space = , use corner = c(x, y) instead. For upper right, c(1, 1); for lower left, c(0, 0), and anywhere in between... Here's an illustration, slightly modified from an earlier post this evening: df - data.frame(x = rnorm(30), y = rnorm(30)) library(reshape) df2 - melt(df)

[R] Variance vs covariance

2010-05-11 Thread jb78
I thought that function var() and first element of function acf(object, type=c('covariance')) should give me the same results. But they differ. Can someone share an explanation. -- View this message in context: http://r.789695.n4.nabble.com/Variance-vs-covariance-tp2173501p2173501.html Sent

Re: [R] create a data.frame for aov

2010-05-11 Thread Dennis Murphy
Hi: mdf3 - as.data.frame.table(as.table(mdat)) mdf3 Var1 Var2 Freq 1 row1 Col11 2 row2 Col1 11 3 row1 Col22 4 row2 Col2 12 5 row1 Col33 6 row2 Col3 13 HTH, Dennis On Mon, May 10, 2010 at 10:38 PM, Yuan Jian jayuan2...@yahoo.com wrote: Hi R-experts, I try to find a way

Re: [R] Robust SE Heteroskedasticity-consistent estimation

2010-05-11 Thread Achim Zeileis
On Tue, 11 May 2010, Arne Henningsen wrote: On 11 May 2010 00:52, Achim Zeileis achim.zeil...@uibk.ac.at wrote: On Mon, 10 May 2010, RATIARISON Eric wrote: I'm using maxlik with functions specified (L, his gradient hessian). Now I would like determine some robust standard errors of my

[R] Regex and gsub

2010-05-11 Thread arnaud Gaboury
Dear group, Here is my df : df3 - structure(list(DESCRIPTION = c(COPPER May/10, COTTON NO.2 Jul/10, CRUDE OIL miNY May/10, GOLD Jun/10, ROBUSTA COFFEE (10) Jul/10, SOYBEANS Jul/10, SUGAR NO.11 Jul/10, SUGAR NO.11 May/10, WHEAT Jul/10, SPCL HIGH GRADE ZINC USD, STANDARD LEAD USD, CORN May/10,

Re: [R] Fwd: R apply() help -urgent

2010-05-11 Thread Dennis Murphy
Hi: To condense the output a bit, here's a slight modification that returns, for each variable tested, the p-value, confidence limits and odds ratio estimate: ff-function(x,y){ m - fisher.test(table(x,y)) c(m$p.value, m$conf.int, m$estimate) } res - apply(data1[,LETTERS[1:26]], 2, ff,

Re: [R] plotting data when all you have is the summary data

2010-05-11 Thread Jim Lemon
On 05/11/2010 08:17 AM, Chaudhari, Bimal wrote: Are there functions/packages which support plots (bar and/or line) where I provide the point estimate and some error measure rather than the raw data? I often have to summarize/present data from multiple sources where the original data is

[R] Creating R exe files

2010-05-11 Thread Shubha Vishwanath Karanth
Hi all, Just like Fortran creates EXE files for a code, can R also do the same? Thanks for the info. Thanks and Regards, Shubha Karanth | Amba Research Ph +91 80 3980 8283 | Mob +91 94 4886 4510 Bangalore * Colombo * London * New York * San José * Singapore * www.ambaresearch.com

Re: [R] Creating R exe files

2010-05-11 Thread Uwe Ligges
On 11.05.2010 10:50, Shubha Vishwanath Karanth wrote: Hi all, Just like Fortran creates EXE files for a code, can R also do the same? Thanks for the info. No, R is an interpreter, not a compiler. Uwe Ligges Thanks and Regards, Shubha Karanth | Amba Research Ph +91 80 3980 8283 |

Re: [R] Regex and gsub

2010-05-11 Thread Bernd Weiss
Am 11.05.2010 10:37, schrieb arnaud Gaboury: Dear group, Here is my df : df3 - structure(list(DESCRIPTION = c(COPPER May/10, COTTON NO.2 Jul/10, CRUDE OIL miNY May/10, GOLD Jun/10, ROBUSTA COFFEE (10) Jul/10, SOYBEANS Jul/10, SUGAR NO.11 Jul/10, SUGAR NO.11 May/10, WHEAT Jul/10, SPCL

Re: [R] Regex and gsub

2010-05-11 Thread Phil Spector
df3$DESCRIPTION = sub(' [a-z]{3}/[0-9]{2}','',df3$DESCRIPTION,ignore.case=TRUE) - Phil Spector Statistical Computing Facility Department of Statistics

Re: [R] Polylogarithm

2010-05-11 Thread Ted Harding
On 10-May-10 20:11:39, Jue \(Andy\) Wang wrote: I am writing to ask if R has a build- in function to calculate this polylogarithm Li_n(z) function , also known as the Jonquière's function defined as Li_n(z)=sum_(k=1)^infty(z^k)/(k^n) Thanks Andy There is an R package 'gsl' which is a

Re: [R] Regex and gsub

2010-05-11 Thread arnaud Gaboury
TY for the two answers. Both work. -Original Message- From: Phil Spector [mailto:spec...@stat.berkeley.edu] Sent: Tuesday, May 11, 2010 11:21 AM To: arnaud Gaboury Cc: r-help@r-project.org Subject: Re: [R] Regex and gsub df3$DESCRIPTION = sub('

Re: [R] Smoothing Techniques - short stepwise functions with spikes

2010-05-11 Thread Tal Galili
Hi Ralf, I can't offer you many resources, but the few I came across are: 1) loess (or the older version: lowess) 2) smooth 3) rollapply (from the zoo pacakge) I used a combination of 1 and 3 when creating an R implementaion for a (simplistic) quantile loess, you might find the code useful:

Re: [R] Advice needed on awkward tables

2010-05-11 Thread Jim Lemon
On 05/11/2010 02:05 PM, Greg Orm wrote: Dear r-help list members, I am quite new to R, and hope to seek advice from you about a problem I have been cracking my head over. Apologies if this seems like a simple problem. I have essentially two tables. The first (Table A) is a standard patient

[R] comparing and combing files

2010-05-11 Thread Assa Yeroslaviz
Hello, I have two tab-delimited files which I would like to combine. In the first one I have gene IDs (Unique) on column 1 and than various experimental results from microarray analysis (see attached files list1 ) the second arrays have the same genes IDs (more and in a different order, some are

Re: [R] [Fwd: Re: Plotting log-axis with the exponential base to

2010-05-11 Thread Ted Harding
Elisabeth and I have been corresponding off-list about this, and came to a potential solution which is on the lines also outlined by Mark Difford. Where Elisabeth (rather, her tutor) may have become confused may lie in the fact that, with a simple plot(...,log=y), R will (by default) make its own

Re: [R] Smoothing Techniques - short stepwise functions with spikes

2010-05-11 Thread Gabor Grothendieck
This removes runs of length 1 and 2. It replaces the values in any such run with NA and then uses na.locf from the zoo package to fill those NA's by carrying forward the last occurrence of a non-NA. In this example the run consisting of a single 2, the run consisting of two 3's and the run

Re: [R] Advice needed on awkward tables

2010-05-11 Thread Gabor Grothendieck
Reduce the non-unique case to the unique case in the first line and then form the ids ensuring that ids has names. Finally sapply over the ids summing across rows using drop = FALSE so that the two cases in your code are both handled at once. Adding 0 converts to numeric. ag -

Re: [R] comparing and combing files

2010-05-11 Thread jim holtman
?merge Here is what you would do: x1 - read.table('/tmp/list1.txt', header=TRUE, sep='\t', as.is=TRUE) x2 - read.table('/tmp/list2.txt', header=TRUE, sep='\t', as.is=TRUE) combined - merge(x1, x2, by.x=Probe.Id, by.y=Probe.ID) Unfortunately your data did not have any IDs in common between the

Re: [R] dbSendQuery with R variables

2010-05-11 Thread jim holtman
?paste On Mon, May 10, 2010 at 6:21 PM, Jonathan Greenberg greenb...@ucdavis.eduwrote: Rhelpers: I'd like to modify this RSQLite statement: rs_stations-dbSendQuery(con_stations, select * from stations) so that stations is actually an R variable, e.g.: stations=c(stationA,stationB) How

[R] merging data frame

2010-05-11 Thread arnaud Gaboury
Dear group, I have 3 data frames I would like to merge. Here they are: pose16 - structure(list(DESCRIPTION = structure(c(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 12L), .Label = c(COPPER May/10, COTTON NO.2 Jul/10, CRUDE OIL miNY May/10, GOLD Jun/10, ROBUSTA COFFEE (10) Jul/10, SOYBEANS Jul/10,

Re: [R] Smoothing Techniques - short stepwise functions with spikes

2010-05-11 Thread Liaw, Andy
I'm surprised no one except Ralf mentioned tree-based methods. Basic regression trees are fitting exactly the type of functions (piecewise constant) that Ralf is asking about. So, either tree() or rpart() or whatever is in party should fit the bill. Another possibility is wavelets with the Haar

Re: [R] merging data frame

2010-05-11 Thread jim holtman
If you just want to combine them together (rbind), try this: str(avprix16) 'data.frame': 16 obs. of 4 variables: $ DESCRIPTION: chr COPPER May/10 CORN May/10 COTTON NO.2 Jul/10 CRUDE OIL miNY May/10 ... $ prix : num -716.9 -1082 -80 -84.8 2295.5 ... $ POSITION : num -2 -3 -1 -1

Re: [R] Regressions with fixed-effect in R

2010-05-11 Thread Liviu Andronic
On 5/11/10, chen jia chen_1...@fisher.osu.edu wrote: Are there any functions that specifically deal with fixed-effects? Other than plm and its vignette, you may want to check this document [1]. Liviu [1] http://cran.r-project.org/doc/contrib/Farnsworth-EconometricsInR.pdf

Re: [R] Regressions with fixed-effect in R

2010-05-11 Thread Liviu Andronic
Dear Daniel On 5/11/10, Daniel Malter dan...@umd.edu wrote: R-squared of interest is typically the within R-squared, not the overall or Could you point to an example on how to compute the within R-squared in R, either via lm() or plm()? Thank you Liviu

[R] Gasoline Data in pls package

2010-05-11 Thread Ravi Ramaswamy
Hi - I am using pls package for some pcr computations. There is a data set called gasoline. Would someone be able to tell me what command(s) could be used to produce this graph in R? I am not sure where the log(1/R) - Y-axis - are coming from Thanks much Ravi

[R] question about stepwise multivariate analysis of variance (stepwise MANOVA)

2010-05-11 Thread 1...@agri521
Hello, I saw statistical method of stepwise multivariate analysis of variance in several literatures. I now want to how to do it in R software. Thanks in advance! Guoqiang Li http://agri520.cn __ R-help@r-project.org mailing list

[R] (svy)glm and weights question

2010-05-11 Thread Jos Elkink
Hi all, I am running a set of logistic regressions, where we want to use some weights, and I am not sure whether what I am doing is reasonable or not. The dependent variable is turnout in an election - i.e. survey respondents were asked whether or not they voted. The percentage of those who say

Re: [R] overlap dot plots with box plots

2010-05-11 Thread ADM
Thanks for the answers, I finally managed! Still need to learn a lot but with such fast help will be easy :) http://n4.nabble.com/file/n2173565/Perfect_one.png Thanks again A -- View this message in context:

Re: [R] Robust SE Heteroskedasticity-consistent estimation

2010-05-11 Thread RATIARISON Eric
Thank you all of you,; I submit you my case: ( Pseudo likehood for exponential family with offset ) loglik - function(param) { b-param m=as.vector(of+z%*%b) ll - sum(v*m-exp(m)) } gradlik - function(param) { b-param m=as.vector(of+z%*%b) gg-(v-exp(m))*z }

Re: [R] merging data frame

2010-05-11 Thread arnaud Gaboury
In fact, that is one solution. I can then do a ddply(x,DESCRIPTION,summarise, pl=sum(prix),quantity=sum(POSITION)). It does work. I was just wandering if it exists another solution. From: jim holtman [mailto:jholt...@gmail.com] Sent: Tuesday, May 11, 2010 2:14 PM To: arnaud Gaboury Cc:

Re: [R] comparing and combing files

2010-05-11 Thread Assa Yeroslaviz
THX Jim, that works just fine. I had to play with it a little, so taht it fitted my expectations but the idee of using merge was very good. Assa On Tue, May 11, 2010 at 13:55, jim holtman jholt...@gmail.com wrote: ?merge Here is what you would do: x1 - read.table('/tmp/list1.txt',

Re: [R] make: Nothing to be done for `all'.

2010-05-11 Thread Elizabeth Lawson
When I try $ rm hello.o hello.so I get the error -bash: $: command not found What does that mean? -- View this message in context: http://r.789695.n4.nabble.com/make-Nothing-to-be-done-for-all-tp2173220p2173679.html Sent from the R help mailing list archive at Nabble.com.

[R] apply formula to data?

2010-05-11 Thread ivo welch
dear R wizards--- I am looking for a reference that explains how to work with formula objects. for example, say, I have a formula which I want to use in an NLS. I want to test what this formula to see if my function was defined correctly. Is there a way to apply a formula to data? For

Re: [R] make: Nothing to be done for `all'.

2010-05-11 Thread Romain Francois
Le 11/05/10 13:40, Elizabeth Lawson a écrit : When I try $ rm hello.o hello.so I get the error -bash: $: command not found What does that mean? Did you actually type the '$' ? You should not have. -- Romain Francois Professional R Enthusiast +33(0) 6 28 91 30 30

Re: [R] How to estimate whether overfitting?

2010-05-11 Thread dluthm
thanks for your help. maybe I have poor statistics level, I can not well understand your means. wishes kevinbrbr在2010-05-11,Bert Gunter gunter.ber...@gene.com 写道: (Near) non-identifiability (especially in nonlinear models, which include linear mixed effects models, Bayesian

[R] a matter of etiquette

2010-05-11 Thread Adelchi Azzalini
Dear useRs and expeRts, I would like to ask your views on an issue for which there possibly exists an established policy of the R-help list, but I am not aware of it. In 2008, I have spotted some errors in a package, one which is likely to have many users (I am not one myself). The more serious

Re: [R] a matter of etiquette

2010-05-11 Thread Gabor Grothendieck
You could send a reminder to the author. Its happened to me that nothing occurred and 6 months later I sent another email and that seemed enough to get it fixed. You could also ask the maintainer if the package has been abandoned and offer to take over as maintainer. If you just want to record

Re: [R] Mantel-Byar test

2010-05-11 Thread Terry Therneau
The Mantel-Byar test is a simple modification to the logrank test. Can R perform this test or any other similar test? The logrank test = score test from coxph The Mantel-Byar is the score test from a Cox model with a time dependent covariate. Terry Therneau

Re: [R] Robust SE Heteroskedasticity-consistent estimation

2010-05-11 Thread Achim Zeileis
On Tue, 11 May 2010, RATIARISON Eric wrote: Hi, I think my meatfunction is wrong. Yes. But the estfun(resMaxlik) doesn't work; Because you haven't supplied one. It's as I wrote in my previous mails: You need to write a bread() and an estfun() method as specified in my previous mail.

[R] Splines under tension

2010-05-11 Thread sam.e
Does anyone know if R has a function for splines under tension. I know there are numerous packages for spline interpolation within R i just can't find one that lets you determine the tension factor. Any help would be much appreciated! Sam -- View this message in context:

[R] merge two data frames

2010-05-11 Thread arnaud Gaboury
Dear group, I have these 2 following data frame: allcon - structure(list(DESCRIPTION = structure(1:17, .Label = c(COFFEE C Jul/10, COPPER May/10, CORN Jul/10, CORN May/10, COTTON NO.2 Jul/10, CRUDE OIL miNY May/10, GOLD Jun/10, HENRY HUB NATURAL GAS May/10, ROBUSTA COFFEE (10) Jul/10, SILVER

[R] barplot in ggplot2

2010-05-11 Thread Joshua Wiley
Hello, I am trying to make a barplot of means where the difference between the barheights is a different color.  My goal is to convey the same information as a dodged barplot, but with only four bars.  Below is the data I am working with, and the two plots I have tried.  The stacked plot would be

[R] nls() and nls2() behavior?

2010-05-11 Thread ivo welch
first, apologies for so many posts yesterday and today. I am wrestling with nls() and nls2(). I have tried to whittle it down to a simple example that still has my problem, yet can be cut-and-pasted into R. here it is: library(nls2) options(digits=12); y=

Re: [R] merge two data frames

2010-05-11 Thread arnaud Gaboury
Got it! First, here is the correct line : y=merge(value,allcon,all.y=T) Then, I got NA because of some white space (blancs) in names of elements of my data frame VALUE.It came from the .csv file from where I obtained the VALUE df. TY Excel again! In fact, as a general advice, I would

Re: [R] barplot in ggplot2

2010-05-11 Thread ONKELINX, Thierry
Dear Joshua, You can accomplish that by setting the position argument in geom_bar to position_dodge(width = 0). ggplot(plot.means, aes(x=index, y=means, fill=factor(hilow))) + geom_bar(position = position_dodge(width = 0.1), stat=identity) But such a plot can be very misleading. Therefore I

Re: [R] barplot in ggplot2

2010-05-11 Thread Joshua Wiley
Dear Thierry, Thank you, that worked excellently, and good point about being potentially misleading. That had not occurred to me. Thanks again, Josh On Tue, May 11, 2010 at 8:05 AM, ONKELINX, Thierry thierry.onkel...@inbo.be wrote: Dear Joshua, You can accomplish that by setting the

Re: [R] [Fwd: Re: Plotting log-axis with the exponential base to a plot with the default logarithm base 10]

2010-05-11 Thread Greg Snow
Is it the tick labels that you want to change? -Original Message- From: Elisabeth Bjerke Rastad ebr...@post.uit.no To: r-help@r-project.org r-help@r-project.org Sent: 5/10/10 11:20 AM Subject: [R] [Fwd: Re: Plotting log-axis with the exponential base to a plot with the default logarithm

[R] Extract model matrix from plm

2010-05-11 Thread Abiel X Reinhart
Is there a way to recover the model matrix that is being used by the plm package? For example, if you run a panel regression with fixed effects, the model matrix would contain the generated dummy variables for the groups. Thanks. Abiel Reinhart This communication is for informational

Re: [R] Robust SE Heteroskedasticity-consistent estimation

2010-05-11 Thread RATIARISON Eric
Hi, I think my meatfunction is wrong. But the estfun(resMaxlik) doesn't work; Error message : Erreur dans UseMethod(estfun) : pas de méthode pour 'estfun' applicable pour un objet de classe c('maxLik', 'maxim', 'list') -Message d'origine- De : RATIARISON Eric Envoyé : mardi 11 mai

[R] ANCOVA in R, single CoVar, two Variables

2010-05-11 Thread Tom W
Hello, I am VERY new to R, just picking it up infact. I have got my head around the basics of ANOVA with post hoc tests but I am struggling with regression, especially with ANCOVAs. I have two sets of data, one of type A, one of type B. Both have been placed in a wind tunnel and sampled every

[R] Problems plotting date and time column from excel using R

2010-05-11 Thread Terry Bassett
I am using R to read from an excel(csv) file. Within the excel file is a column with the date set that looks likes this: 53:40.2 and in the Insert function box it looks likes this: 9/21/2006  4:53:40 PM I tired separating the time and date using the function below and then plotting again

Re: [R] nls() and nls2() behavior?

2010-05-11 Thread Walmes Zeviani
I think the problem with nls() is the model specification. Look: y - c(0.4334,0.3200,0.5848,0.6214,0.3890,0.5233,0.4753, +0.2104,0.3240,0.2827,0.3847,0.5571,0.5432,0.1326,0.3481) x - c(0.3521,0.4334,0.3200,0.5848,0.6214,0.3890,0.5233, +

Re: [R] apply formula to data?

2010-05-11 Thread Gabor Grothendieck
Is the problem that you want to use the formula as if it were a function? In that case: 1. nls2 in the nls2 package is like nls but its extensions include a brute force algorithm which simply computes the formula at the starting values: my.formula - y ~ a+b*x^2 y - x - 1:10 library(nls2)

[R] Error when trying to run model selection with leaps package

2010-05-11 Thread bitzy
I am trying to do an exhaustive model search and am having some sort of input error. leaps ( x= At[,3:8], y = At [,2],method=Cp) Error in `colnames-`(`*tmp*`, value = 1) : attempt to set colnames on object with less than two dimensions - where At is my data matrix Any suggestions on what

[R] Revolution R and the R Community?

2010-05-11 Thread ivo welch
As an end-user, I wonder about Revolution R. Is the relationship between Revolution R and the R community at-large a positive one? Do the former contribute to the development efforts of the latter? Is there a competitive aspect? is their forum competitive with r-help? any other thoughts?

Re: [R] (svy)glm and weights question

2010-05-11 Thread Thomas Lumley
On Tue, 11 May 2010, Jos Elkink wrote: Hi all, I am running a set of logistic regressions, where we want to use some weights, and I am not sure whether what I am doing is reasonable or not. The dependent variable is turnout in an election - i.e. survey respondents were asked whether or not

Re: [R] a matter of etiquette

2010-05-11 Thread Frank E Harrell Jr
On 05/11/2010 08:20 AM, Gabor Grothendieck wrote: You could send a reminder to the author. Its happened to me that nothing occurred and 6 months later I sent another email and that seemed enough to get it fixed. You could also ask the maintainer if the package has been abandoned and offer to

Re: [R] How to estimate whether overfitting?

2010-05-11 Thread Bert Gunter
-Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of dlu...@yeah.net Sent: Tuesday, May 11, 2010 3:23 AM To: Bert Gunter Cc: r-help@r-project.org Subject: Re: [R] How to estimate whether overfitting? thanks for your help. maybe I have

[R] Improving loop performance

2010-05-11 Thread Mark Lamias
R-users, I have the following piece of code which I am trying to run on a dataframe (aga2) with about a half million records.  While the code works, it is extremely slow.  I've read some of the help archives indicating that I should allocate space to the p1 and ags1 vectors, which I have done,

Re: [R] Revolution R and the R Community?

2010-05-11 Thread David Smith
On Tue, May 11, 2010 at 8:08 AM, ivo welch ivo...@gmail.com wrote: As an end-user, I wonder about Revolution R.  Is the relationship between Revolution R and the R community at-large a positive one?  Do the former contribute to the development efforts of the latter?  Is there a competitive

Re: [R] Problems plotting date and time column from excel using R

2010-05-11 Thread David Winsemius
On May 11, 2010, at 9:00 AM, Terry Bassett wrote: I am using R to read from an excel(csv) file. Within the excel file is a column with the date set that looks likes this: 53:40.2 and in the Insert function box it looks likes this: 9/21/2006 4:53:40 PM This is really an Excel question,

[R] functions sample() and S.SI()

2010-05-11 Thread Lourdes Molera
Hello, I need to select a sample from a small population using simple random sampling without replacement. I've found two possibilities in R, the function sample() and the function S.SI() in the package TeachingSampling, but I don't know which one is better. Can someone help me? Thank you

Re: [R] Improving loop performance

2010-05-11 Thread jim holtman
Instead of looping on each row, try the following p1 - as.character(aga$AP) # skew by one on the paste p1 - ifelse(aga2$first.exon, p1, paste(c(, tail(ags, -1)), aga2$AP, sep=',')) ags - as.character(aga$AS) ags - ifelse(aga2$first.exon, ags, paste(c(, tail(ags, -1)), aga2$AS, sep=',') On Tue,

[R] question about R

2010-05-11 Thread khazaei
Hi, At each iteration in my program,I need to generate tree vectors,X1,X2,X3, from exponential distribution with parameters a1,a2,a3. Can you help me please how can I do it such that it take a little time? thank you khazaei __ R-help@r-project.org

Re: [R] functions sample() and S.SI()

2010-05-11 Thread Jason Morgan
On 2010.05.11 18:30:57, Lourdes Molera wrote: Hello, I need to select a sample from a small population using simple random sampling without replacement. I've found two possibilities in R, the function sample() and the function S.SI() in the package TeachingSampling, but I don't know which

Re: [R] Improving loop performance

2010-05-11 Thread jim holtman
It was supposed to be 'head(p1, -1)' instead of 'tail(p1, -1)' On Tue, May 11, 2010 at 12:17 PM, Mark Lamias mlam...@yahoo.com wrote: R-users, I have the following piece of code which I am trying to run on a dataframe (aga2) with about a half million records. While the code works, it is

[R] sprintf funny behavior

2010-05-11 Thread Matt Young
sprintf(%d,4) [1] 4 for(i in 1:4) sprintf(%d,4) for(i in 1:4) print(4) [1] 4 [1] 4 [1] 4 [1] 4 Why doesn't sprintf like the for loop here __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting

Re: [R] question about R

2010-05-11 Thread Patrizio Frederic
# density function desp - function(x,lambda) { return(lambda * exp(-lambda*x)*(x=0)) } # cum. probability function pesp - function(q,lambda) { return((1-exp(-lambda*q))) } # quantile function qesp - function(p,lambda) { return(-lambda^{-1}*log(1-p)) } # random sample resp -

Re: [R] question about R

2010-05-11 Thread Steve Lianoglou
Hi, On Tue, May 11, 2010 at 12:36 PM, khaz...@ceremade.dauphine.fr wrote: Hi, At each iteration in my program,I need to generate  tree vectors,X1,X2,X3, from exponential distribution with parameters a1,a2,a3. Can you help me please how can I do it such that it take a little time? So, at

Re: [R] sprintf funny behavior

2010-05-11 Thread Ted Harding
On 11-May-10 16:53:56, Matt Young wrote: sprintf(%d,4) [1] 4 for(i in 1:4) sprintf(%d,4) for(i in 1:4) print(4) [1] 4 [1] 4 [1] 4 [1] 4 Why doesn't sprintf like the for loop here Because, as a general rule, output generated inside loops, and within execution of functions, etc., does

Re: [R] sprintf funny behavior

2010-05-11 Thread Mario Valle
Not always the result of a function is printed on screen. Use: for(i in 1:4) print(sprintf(%d,4)) ciao! mario Matt Young wrote: sprintf(%d,4) [1] 4 for(i in 1:4) sprintf(%d,4) for(i in 1:4) print(4) [1] 4 [1] 4 [1] 4 [1] 4 Why doesn't sprintf like the for loop here

[R] Gantt chart - more than one colour on a line

2010-05-11 Thread D Holl
Dear all I would like to plot a Gantt chart type plot, but with more than one colour on a line. The gantt.chart function will allow me to add more than one bar on a line, but it is in the same colour as the first bar on that line. For example (using the code helpful provided in the R graphics

[R] RWinEdt in WinEdt 6

2010-05-11 Thread Gregoire
I'm having difficulty installing RWinEdt in WinEdt6. I receive the following message: Error : .onAttach failed in attachNamespace() for 'RWinEdt', details: call: getWinEdt() error: WinEdt is not installed properly. I have tried following the manual instructions in the readme.txt without

Re: [R] Rd files must have a non-empty \title

2010-05-11 Thread Greg Snow
I nominate Duncan's last statement: If you don't want informative help files, it's really not much work to make uninformative ones. Duncan Murdoch For the fortunes package. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111

[R] Fw: Improving loop performance

2010-05-11 Thread Mark Lamias
I will clarify my problem as others has asked for more detail: I have a dataframe, aga2, that looks like this:    Row.ID AgilentProbe GeneSymbol GeneID Exons AgilentStart first.geneid first.exon last.geneid last.exon 8    1348 A_23_P116898    A2M  2    34  9112685 TRUE  

Re: [R] Gantt chart - more than one colour on a line

2010-05-11 Thread David Winsemius
On May 11, 2010, at 11:52 AM, D Holl wrote: Dear all I would like to plot a Gantt chart type plot, but with more than one colour on a line. The gantt.chart function will allow me to add more than one bar on a line, but it is in the same colour as the first bar on that line. For example (using

Re: [R] Fw: Improving loop performance

2010-05-11 Thread Patrick Burns
I didn't see the cumulative paste before, so my 'ifelse' suggestion doesn't make much sense, sorry. But if what you show is representative in that there are very few 'FALSE' values in 'first.exon', then you could use 'ifelse' and then go back and fix the wrong ones with a loop over the rows that

[R] predicting without a model

2010-05-11 Thread Felipe Carrillo
Hello: I have 5 years of weekly passage data and want to predict fish passage for the following year. I don't have a model to use to predict data for the sixth year. Can I somehow still predict based on these five years? I just want to see on the graph what the predicted year would look like and

Re: [R] [Fwd: Re: Plotting log-axis with the exponential base to

2010-05-11 Thread Peter Ehlers
Ted, Regarding the addition of a 'line' to a plot with log-y axis, there is a better way: curve() with 'add=TRUE' will respect the current plot's log setting: plot((1:10), log=y, yaxt=n) axis(side=2, at=c(1,2,5,10)) f - function(x, a=0, b=1) {a + b*x} curve(f, add = TRUE)

Re: [R] ANCOVA in R, single CoVar, two Variables

2010-05-11 Thread RICHARD M. HEIBERGER
I recommend the ancova function in the HH package. install.packages(HH) library(HH) example(ancova) ?ancova For your example, tmp - textConnection( day A B 0 10.010.0 7 9.0 9.1 14 8.0 8.2 21 7.0 7.3 28 6.0 6.4 35 5.0 5.5 42

Re: [R] Revolution R and the R Community?

2010-05-11 Thread Duncan Murdoch
On 11/05/2010 12:23 PM, David Smith wrote: On Tue, May 11, 2010 at 8:08 AM, ivo welch ivo...@gmail.com wrote: As an end-user, I wonder about Revolution R. Is the relationship between Revolution R and the R community at-large a positive one? Do the former contribute to the development

Re: [R] Improving loop performance

2010-05-11 Thread jim holtman
You are spending most of the time in the loop accessing the dataframe. Put the data you want out to a vector and then process that: x - read.table(textConnection( Row.ID AgilentProbe GeneSymbol GeneID Exons AgilentStart first.geneid first.exon last.geneid last.exon + 8 1348

Re: [R] predicting without a model

2010-05-11 Thread Ben Bolker
Felipe Carrillo mazatlanmexico at yahoo.com writes: ## snip In the absence of any other information, I would say your best bet would just be to take the weekly average across the previous years. There are lots of ways to do this (tapply, aggregate, etc.), but cast() works: fallavg -

[R] odfweave with openOffice 3.2

2010-05-11 Thread Jean lobry
Dear list, since I have upgraded openOffice to version 3.2 I have some trouble to open very simple ODT files generated by odfweave: the file is apparently corrupted (but recovery is fine). I have observed this under windows and mac OS 10.4.11 with R 2.10.0, odfWeave_0.7.11, XML_2.6-0,

Re: [R] predicting without a model

2010-05-11 Thread Rob Forler
I forgot to reply to all: This is what I sent earlier to him: I would look at the data. You don't really have any information other than what appears to be the weekly passage. I would look to see if there is any relationship between the current value of passage and previous values of passage.

Re: [R] nls() and nls2() behavior?

2010-05-11 Thread Gabor Grothendieck
On Tue, May 11, 2010 at 11:24 AM, Walmes Zeviani walmeszevi...@hotmail.com wrote: I think the problem with nls() is the model specification. Look: y - c(0.4334,0.3200,0.5848,0.6214,0.3890,0.5233,0.4753, +        0.2104,0.3240,0.2827,0.3847,0.5571,0.5432,0.1326,0.3481) x -

Re: [R] a matter of etiquette

2010-05-11 Thread John Sorkin
In the spirit of open software, and in the spirit of R which encourages review of software, if you find an error I think you should let the R community know of the error. Of course you should give the package maintainer the first crack at fixing the error, but if no fix is forthcoming, please

Re: [R] RWinEdt in WinEdt 6

2010-05-11 Thread Uwe Ligges
On 11.05.2010 18:01, Gregoire wrote: I'm having difficulty installing RWinEdt in WinEdt6. I receive the following message: Error : .onAttach failed in attachNamespace() for 'RWinEdt', details: call: getWinEdt() error: WinEdt is not installed properly. I have tried following the manual

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