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Full_Name: Anjali Shitole Version: R 2.5.1 OS: Submission from: (NULL) (202.141.157.91) I want to compute coefficient of variation for each subset of data. Each subset is heterogeneous means number of rows in each subset are different.These all subsets are in one dataset situated one by one. i have used aggregate command to calculate mean for each subset. But same command for calculating sd

...hout ever receiving an explicit acknowledgment. These problems tend to be: * non-trivial * outside of the main current interests (perhaps) of R-core I'm thinking in this case of Petr Savicky's series of posts http://www.nabble.com/bug-in-detection-of-zero-state-for-Mersenne-Twister-%28PR-10362%29-tf4670916.html#a13343487 http://www.nabble.com/initial-scrambling-of-seed-in-do_setseed---RNG_Init-tf4504008.html#a12845234 http://www.nabble.com/all-zeroes-in-Mersenne-Twister-state-may-remain-undetected-tf4626354.html#a13210502 http://www.nabble.com/predictable-bit-patterns-in-runif%28n%...

Full_Name: Ray Kiddy Version: R 2.5.0 GUI 1.19 (4308) OS: Mac OS X 10.4.9 Submission from: (NULL) (71.139.33.60) There is no section in the FAQ equivalent to "Using R". The "R Basics" is too basic. I would say it addresses "meta-R" questions, such as installing. I had a FAQ that I would think would be a basic "Using R" question, namely: "How does

Full_Name: Joseph Amuah Version: 2.7.0 (2008-04-22) OS: Windows Submission from: (NULL) (205.207.78.4) I used the plot function to create some graphs but wanted to add soem restrictions. A set of warning were produced even though the plot worked fine. Can these warnings be cleaned up? Here is an example: *************************************** > plot(xx$month, xx$log10RR, xlab="",

Full_Name: Gostan Thierry Version: 2.6.1 (2007-11-26) OS: Windows XP Submission from: (NULL) (193.49.190.42) I cannot explain why R seems to have problems adding two big numbers. sprintf("%f",10^4+10^19) gives "10000000000000010240.000000" instead of "10000000000000010000.000000" problems seems to arrive when i'm trying to add a big and a

Full_Name: Roger Newton Version: 2.8.1 OS: windows 2000 Submission from: (NULL) (80.176.228.157) I have an elderly version of SPSS (version 11) which I still use. R Version 2.6.1 would, and still will, read SPSS *.sav files produced by SPSS version 11. R version 2.8.1 which I installed two days ago (05/02/09) reports an error and shuts down when trying to read SPSS version 11 *.sav files using

Full_Name: Oliver Balmer Version: 2.3.1 OS: Mac OS 10.4.6 Submission from: (NULL) (157.161.74.75) when working in the editor R crashes regularly. no other program ever crashes. one quite reliable way to crash it is by marking some code and then pressing the "find" command. I have had this problem with other R versions before. I have the feeling the editor is the problem. Another

Full_Name: Viktor Witkovsky Version: 2.9.2 OS: Windows XP Submission from: (NULL) (78.98.89.227) Hello, I have found strange behavior of the function qchisq (the non-central qchisq is based on inversion of pchisq, which is further based on pgamma). The function gives wrong results without any warning. For example: qchisq(1e-12,1,8.94^2,lower.tail=FALSE) gives 255.1840972465858 (notice that

Full_Name: Steven McKinney Version: 2.6.0 OS: OS X Submission from: (NULL) (142.103.207.10) Function ar() in package "stats" is showing a quirky bug. Some calls to ar() run to completion, others throw an error. The bug is reproducible by several people on different machines, however, the ar() function itself ends up throwing the error sporadically. Several calls to ar() may be

Full_Name: Allan Stokes Version: 2.8.1 OS: XP Submission from: (NULL) (24.108.0.245) I've just spent a hellish six hours trying to create my own R package with a bare bones "hello world" R function inside. I was able to create a package.tar.gz file eventually with much perseverance. My remaining problem is that when I try to install my simple package under RGui, it hangs.

This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --1660387551-150661043-1249684349=:2997 Content-Type: TEXT/PLAIN; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Hi Jeff, =09As mentioned in my message, I *did* replicate on another platform.=20 One platform was