Re: [R] Read big data (>3G ) methods ?

Long long time ago in a galaxy far far away, I've played with the LaF package for reading large CSV files. But it's been a while and I don't remember its performance and limitations. Give it a trial. Horace -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun..

[R] glitch in building R package

I follow Alan Lenarcic's very helpful tutorial on building R package for Windows (XP), which could be found in www.stat.columbia.edu/~gelman/stuff_for_blog/AlanRPackageTutorial.pdf. The package involves a small dll com

[R] Solved : RE: problem installing R on ubuntu

untu hardy/ It should say lucid, deb http:///bin/linux/ubuntu lucid/ Once it's changed, the apt-get works without a glitch. Thanks again to Homer. Horace W Tso -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of

Re: [R] problem installing R on ubuntu

, December 23, 2010 10:57 AM To: Horace Tso Cc: r-help Subject: Re: [R] problem installing R on ubuntu On Thu, Dec 23, 2010 at 6:30 PM, Horace Tso wrote: > Following the official instructions to install R on ubuntu 10.04, I issued > this command on the prompt, > > sudo apt-get install r

[R] problem installing R on ubuntu

Following the official instructions to install R on ubuntu 10.04, I issued this command on the prompt, sudo apt-get install r-base Here is the error msg, Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean

[R] rgl windows binary

Folks, the rgl 0.91 binary for windows seems corrputed. WinZip complains the downloaded zip file is not a valid archive. I had no luck with R-forge either. Could someone point me to the latest production ready binary? Thks. H [[alternative HTML version deleted]] __

[R] Crash report: projection pursuit & predict

Folks, The projection pursuit regression function in the base R seems to crash when the optimization level is set to zero, i.e. the initial ridge terms are accepted without refitting. I encountered this problem in an out-of-sample prediction exercise using predict. But further investigation sug

Re: [R] select columns from vector of column names

How about data[,colnames(data)%in%colnames] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Jonathan Flowers Sent: Friday, July 09, 2010 11:27 AM To: r-help@r-project.org Subject: [R] select columns from vector of column names H

Re: [R] Ctree Question

Steve, I'm not sure if your task could be accomplished with a ready-made function in party. But, if you could manage to convert your tree structure to a dendrogram, then it's straightforward using dendrapply. In fact, there is an example in dendrapply help page showing how leaves are colored.

Re: [R] questions on some operators in R

3 PM To: Horace Tso Subject: RE: [R] questions on some operators in R And the 2nd example? -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -Original Message----- > From: Horace Tso [mailto:horace@pgn.com] > Sent:

Re: [R] questions on some operators in R

Certainly not. I'm just too lazy. -Original Message- From: David Winsemius [mailto:dwinsem...@comcast.net] Sent: Friday, June 18, 2010 2:57 PM To: Horace Tso Cc: Erik Iverson; Greg Snow; r-help Subject: Re: [R] questions on some operators in R On Jun 18, 2010, at 5:15 PM, Horac

Re: [R] questions on some operators in R

ypical script, you have hundreds of assignment statements. Those extra keystroke translate into quite a bit more wear on your fingers. H -Original Message- From: Erik Iverson [mailto:er...@ccbr.umn.edu] Sent: Friday, June 18, 2010 1:23 PM To: Greg Snow Cc: Horace Tso; li li; r-help Sub

Re: [R] questions on some operators in R

Li li, I know many S-language old timers would tell you to use <- over = for assignment. Speaking from my own painful experience of debugging S/R codes, I much much much prefer '='. In fact, I'd like to see the R language get ride of '<-' as the assignment operator. Here is why. > x = -5:10

Re: [R] type conversion with apply or not

Guys, many thanks. lapply works. Did not occur to me as I thought lapply returns a list and the receiving entity is a data frame. H -Original Message- From: William Dunlap [mailto:wdun...@tibco.com] Sent: Tuesday, June 08, 2010 2:22 PM To: Horace Tso; r-help@r-project.org Subject

[R] type conversion with apply or not

are set, so that (for example) factor results will be coerced to a character array. " The question then is how type conversion can be carried out on some columns of a data frame without using a loop. Thanks. Horace Tso [[alternative HTML version deleted]]

[R] residuals from a fractional arima model and other questions

<2e-16 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 [d.tol = 0.0001221, M = 100, h = 0.004807] Log likelihood: -4.562e+05 ==> AIC = 912360.4 [1 deg.freedom] Last question : why are some of z-values infinite? Thanks in advance

[R] FW: [rkward-devel] questions on RKWard

Thought I should copy the list with Matthieu's response. H -Original Message- From: Matthieu Stigler [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 05, 2008 8:29 PM To: Horace Tso; [EMAIL PROTECTED] Subject: Re: [rkward-devel] questions on RKWard some answer only for the

[R] questions on RKWard

Folks, I'm making progress moving from Windows to Linux and have RKward up and running. I read somewhere that Rkward's supposed to be the Tinn-R for linux and Tinn-R has worked out great for me. So naturally I'd like to do the following, if possible, 1. How to ask Rkward not to load the last s

Re: [R] number of an element in a matrix

My last email went out faster than I could think. Actually no need to coerce a matrix to a vector. x = matrix(sample(1:10, 100, replace=T), ncol=10) table(x) H -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Horace Tso Sent: Monday, August 11, 2008 2

Re: [R] number of an element in a matrix

How about x = matrix(sample(1:10, 100, replace=T), ncol=10) table(as.vector(x)) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of rostam shahname Sent: Monday, August 11, 2008 1:42 PM To: r-help@r-project.org Subject: [R] number of an element in a matrix

Re: [R] Constrained coefficients in lm (correction)

Take a look at the systemfit package. A constraint on a parameter, like the one you described, could be implemented using R*beta0 = q, where R is R.restr and q is q.restr in the function call. I haven't tried it but it's easy to test with some data. Horace -Original Message- From: [E

Re: [R] Improving data processing efficiency

Daniel, allow me to step off the party line here for a moment, in a problem like this it's better to code your function in C and then call it from R. You get vast amount of performance improvement instantly. (From what I see the process of recoding in C should be quite straight forward.) H. --

[R] FW: R + Linux

I'll add my $0.02 as I've just gone thru a (painful) transition to Linux. In my case Ubuntu didn't quite work for reason I'm still not sure (must be hardware + driver issue). I eventually put on opensuse 10.3 and installed R in an rpm pkgage on the command line. Getting R in was not simple. I go

Re: [R] GMM estimation

Leo, do you mean GMM as in Generalized Method of Moment? If so i've posted a similar question here before and the answer appears to be none at this time. Horace -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Leo Correia Sent: Tuesday, May 27, 2008 11:53

Re: [R] Pros and Cons of R

On the 64-bit part, I tested 2.7.0 on a Dual Core Lenovo ThinkPad and was able to allocate memory beyond 2G. Have not done much else otherwise but it seems to work just fine. H -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Monica Pisica Sent: Thursday

Re: [R] RPM-style install (SLED 10.1)

Stas, this doesn't solve your problem but may shed some light on what might have gone wrong. Just recently I installed R 2.7.0 under openSuse 10.3 in a brand new 64-bit Lenovo ThinkPad. The first install failed because of a dependency error just like yours. It complained it couldn't find BLAS an

[R] Implementation of GMM

Hi folks, Is there an implementation of generalized method of moments in R? I did do a help.search but found no hit. Site search found this gmm estimator function in the package sde but not sure what it is. Having browsed the codes in Finmetrics, I naively thought it won't be too hard to imple

Re: [R] Dates in R

Irina, you must have them in character format. You need to convert to Date type. mydates = as.Date(mydates, "%m/%d/%Y") HTH. Horace -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Irina Burmenko Sent: Wednesday, November 28, 2007 11:44 AM

Re: [R] Appropriate measure of correlation with'zero-inflated' data?

Doug and the football fans out there, I'm no football expert myself. But here is what my colleague said after reading the posting. "I can't help you with the equation, but I can say that the polls are very poor predictors of performance. The reason they do such a bad job is that pollsters ra