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Any ideas what is the problem with this code? > N <- 2; c(Sys.Date(), sprintf('N = %d', N)) [1] "2012-01-10" NA Warning message: In as.POSIXlt.Date(x) : NAs introduced by coercion Best regards, Ryszard Ryszard Czerminski AstraZeneca Pharmaceuticals LP 35 Gatehouse Drive Waltham, MA 02451 USA 781-839-4304 ryszard.czerminski@astrazeneca.com -------------------------------------------------------------------------- Confidentiality Notice: This message is private and may ...{{dropped:11}}

...rational explanation for the bizarre seq() behavior below? > seq(2,8.1, lenght.out=3) [1] 2 3 4 5 6 7 8 > help(seq) > seq(2,8,length.out=3) [1] 2 5 8 > seq(2,8.1,length.out=3) [1] 2.00 5.05 8.10 Except maybe that it is early in the morning :) Best regards, Ryszard Ryszard Czerminski AstraZeneca Pharmaceuticals LP 35 Gatehouse Drive Waltham, MA 02451 USA 781-839-4304 ryszard.czerminski@astrazeneca.com -------------------------------------------------------------------------- Confidentiality Notice: This message is private and may ...{{dropped:11}}

...use a regular expression to return the substring up to the '_', but I am unsure how to make a regular expression return the substring it matches to in R. Any ideas on all three counts would be gratefully recieved. -------------------------------------------------------------------------- AstraZeneca UK Limited is a company incorporated in Engl...{{dropped:21}}

...; $major [1] "2" $minor [1] "14.1" $year [1] "2011" $month [1] "12" $day [1] "22" $`svn rev` [1] "57956" $language [1] "R" $version.string [1] "R version 2.14.1 (2011-12-22)" Best regards, Ryszard Ryszard Czerminski AstraZeneca Pharmaceuticals LP 35 Gatehouse Drive Waltham, MA 02451 USA 781-839-4304 ryszard.czerminski@astrazeneca.com -------------------------------------------------------------------------- Confidentiality Notice: This message is private and may ...{{dropped:11}}

I wonder if there is a package that will estimate a Zero Inflated Poisson Model (ZIP), and also if there is a package that will estimate what is called the Tobit model: that is a combination of censored and observed values in the same sample. Georgina Bermann Biostatistics AstraZeneca R&D M?lndal -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-...

...s. In maps package I found smooth.map function, but maybe there is a more generic way of accomplishing the same thing. Ideally there would be an option to control smoothness of the contour lines in contourplot(), or levelplot(), but I cannot find a way to do it. Best regards, Ryszard Czerminski AstraZeneca Pharmaceuticals LP 35 Gatehouse Drive Waltham, MA 02451 USA 781-839-4304 ryszard.czerminski@astrazeneca.com -------------------------------------------------------------------------- Confidentiality Notice: This message is private and may ...{{dropped:11}}

...ems to happen because the second instance is spawned in the TEMP directory, and the Rprofile is either copied or somehow executed anyway, even if the cwd has changed to the TEMP directory Do you have any clue of what's going on? Thanks -- Stefano Borini Principal Analytical Tools Developer AstraZeneca R&D BioPharmaceuticals | Data Science & AI | Early Biometrics & Statistical Innovation ________________________________ AstraZeneca UK Limited is a company incorporated in England and Wales with registered number:03674842 and its registered office at 1 Francis Crick Avenue, Cambri...

...domForest(rf, X) : subscript out of bounds BTW: Just find out that apparently predict() does not like NULL name in X, because this works fine: > one <- rep(1, length(chirps)) > X <- cbind(one,chirps) > rf <- randomForest(X, temp) > yp <- predict(rf, X) Ryszard Czerminski AstraZeneca Pharmaceuticals LP 35 Gatehouse Drive Waltham, MA 02451 USA 781-839-4304 ryszard.czerminski@astrazeneca.com -------------------------------------------------------------------------- Confidentiality Notice: This message is private and may ...{{dropped:11}}

...different header in the two tables), and filter for overlapping entries (preferred approach) * OR filter table 1 for entries where SampleID matches to one in a list taken from table 2 Any help would be gratefully recieved. -------------------------------------------------------------------------- AstraZeneca UK Limited is a company incorporated in Engl...{{dropped:21}}

...below) is probably not directly applicable, still it looks like it is too big data set for this dataset/machine combination. How does memory usage in randomForest scale with dataset size? Is there a way to build global rf model with dataset of this size? Best regards, Ryszard Ryszard Czerminski AstraZeneca Pharmaceuticals LP 35 Gatehouse Drive Waltham, MA 02451 USA 781-839-4304 ryszard.czerminski@astrazeneca.com RE: [R] randomForest: too many element specified? Liaw, Andy Mon, 17 Jan 2005 05:56:28 -0800 > From: luk > > When I run randonForest with a 169453x5 matrix, I got the > following...

...e are presenty using SAMBA 2.2 w. Windows 2000 sp1 and will be upgrading to Windows 2000 sp3. Are there any known or suspected problems with the combination of Windows 2000 sp3 and SAMBA 2.2. We are using Solaris 7 on the Unix side. /ola Ola Engstr?m Technical Computing & Information Services AstraZeneca R&D M?lndal S-431 83 M?lndal Sweden

...list, but the aggregate function can only return scalar values and so something like "aggregate(dat[,3], list(dat$gene), cat)" will not work. Is there a simple function like aggregate that works for strings in R? -------------------------------------------------------------------------- AstraZeneca UK Limited is a company incorporated in Engl...{{dropped:21}}

...GS.txt in the distribution [2000/01/05 15:40:10, 0] lib/fault.c:fault_report(43) =============================================================== [2000/01/05 15:40:10, 0] lib/util.c:smb_panic(2456) PANIC: internal error Any help would be much appreciated. --Gary Smith, unix systems manager AstraZeneca R&D, Boston E: Gary.L.Smith@astrazeneca.com

"Swinton, Jonathan" <Jonathan.Swinton@astrazeneca.com> writes: > # works as expected > > ac <- c('A','B'); > > identical(ac,ac[1:2]) > [1] TRUE > > #but > > af <- factor(ac) > > identical(af,af[1:2]) > [1] FALSE > > Any opinions? Did a cross-check with Splus and it doesn&...

...tandard errors are different. It may be different estimators of the variance of the residuals? Which one is the default in R, I don't find that too easily in the documentation. Does anybody know? I'll be very grateful if somebody can help in this matter. Georgina Bermann Biostatistics, AstraZeneca R&D M?lndal ---- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-...

...thod to be called on each member of a ... argument list. But it gives no examples of what individual method functions need to look like. Any ideas or a place to look for working code? Jonathan Swinton, Statistical Scientist, Computational Biology, Pathway Analysis, Global Sciences and Information, AstraZeneca.

...string make[1]: *** [C:/R/rw1050/library/sag/zzzz] Error 2 make[1]: Leaving directory `/cygdrive/c/R/rw1050/src/library/sag' make: *** [pkg-sag] Error 2 Has anybody seen this before? Does anybody know where to look for the error? Thanks in advance Per Broberg Senior Research Scientist, PhD AstraZeneca R&D Lund S221 87 Lund Sweden tel +46 46 33 78 22 email per.broberg at astrazeneca.com -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[u...

Hi I really hope someone can help me. I have just started to work with S-plus, and have not yet understood how it really works. I am now trying to fit a mixed effects model with lme. My goal is to compare four different groups, at several different time points, and I therefore would like to create confidence intervals for linear combinations of my estimated parameters (as I usually do with

Dear R-helpers, I'm dealing with large datasets, say tables of 60 000 times 12 or so, and some of the functions are (too ) slow and I'm therefore trying to find ways to speed them up. I've found that for instance for-loops are slow in R (both by testing and by searching through mail archives etc ) Are there any more well known arguments that are slow in R, ,maybe at data

Hi ! I wonder if the R application is capable of utilizing more than one CPU. I need to know since we run it on a SunFire 3800 with 8 750 USIII cpu:s and on a E420R with 4 USII cpu:s and we don't feel like we get the performance we could expect. I've seen some old discussions claiming that it isn't. With kind regards Lennart Araskoug