similar to: help with my sloppy syntax

Greetings R-ians: I know what doesn?t work but I don?t know why, nor how to remedy things. I have a character string containing "." which I want to replace with " " gsub(".", " ", file.label) replaces the every character with a blank. However gsub(".xls", " ", file.label) replaces ".xls" with a blank as expected. It appears

Greetings R-ians: Searching the Searchable Mail Archives I discovered that ctrl L will clear the Rgui screen, which is what I'd like to do from a print (or some similar) statement. Is there a mechanism to use the ctrl L clear-screen sequence in a script, or print statement? Thanks for your counsel. Charles Annis, P.E. Charles.Annis at StatisticalEngineering.com phone: 561-352-9699 eFax:?

Greetings, R-ians: I would like to know which version or R was used to create a given package. I think I remember seeing that topic discussed recently but cannot find it among my notes. Can anyone tell me how to determine which version of R created a package? Thanks. Charles Annis, P.E. <mailto:Charles.Annis@StatisticalEngineering.com> Charles.Annis@StatisticalEngineering.com

Greetings, R-ians: I'm using R 2.3.1 on WindowsXP. I need to find the name of a file at the end of a sting that contains the path + file, with the problematic "\\" as separators. The string looks something like this: "C:\\Documents and Settings\\myName\\My Documents\\R Projects\\Project1\\file.name.csv" What I want is "file.name.csv" Currently I use the

Greetings, R-ians: I'm using R 2.3.1 on WindowsXP. I need to find the name of a file at the end of a sting that contains the path + file, with the problematic "\\" as separators. The string looks something like this: "C:\\Documents and Settings\\myName\\My Documents\\R Projects\\Project1\\file.name.csv" What I want is "file.name.csv" Currently I use the

Dear R-Aficionados: I realize that no random number generator is perfect, so what I report below may be a result of that simple fact. However, if I have made an error in my thinking I would greatly appreciate being corrected. I wish to illustrate the behavior of small samples (n=10) and so generate 100,000 of them. n.samples <- 1000000 sample.size = 10 p <- 0.0001 z.normal <- qnorm(p)

Dear R-ians: I'm running R2.9.2 on a 6 year old Windows XP DELL with 2 Gig RAM and a 3MHz Pentium 4 chip. I've written a package using the User Menus Under Windows commands (winMenuAdd, etc). It works very well. I have 6 test cases and running any one of them requires many selections form the menus and some keyboard entry, and it takes me hours to exercise them all to see

Greetings, R-ians: Yes it's easy to run R from a CD: I copied my windows installation folder to the CD, then copied my R working directory to the CD. To run from the CD, I copy the working directory from the CD to the desktop, and then create an R desktop icon that points to Rgui.exe on the CD, and starts in the working directory folder I just copied to the desktop. The problem is that to

Dear R Helpers: I am trying to annotate a plot. The following code snippet works, but it is kind of a kludge since it adds the partial derivative symbols after creating the plotmath frac(). Is there a more elegant way to write a partial derivative? dev.off() plot(NA, xlim=c(-3,3), ylim=c(0,1.6), xlab="", ylab="", tck=-0.015) text(1.6, 1, expression(paste("slope =

Greetings, R-ians: I am sure I am missing something obvious. How do I provide a CITATION file for my home-brew package, so that it will be packaged using R CMD build --binary myPackage? I have placed a CITATION file in the myPackage directory along with the DESCRIPTION file, but it is ignored. Thanks for your guidance. Charles Annis, P.E. Charles.Annis at StatisticalEngineering.com

Greetings R-wizards: For historical reasons I have filenames with the character "?" and have successfully used "\u00e2" in its place, with the hoped-for result on all my on-screen plots. However since R2.7.0 I have trouble with savePlot() when the file name includes that character as it does in this example: savePlot(paste("diagnostic ? vs a ", file.label,

Greetings, Amigos: I have been trying without success to convert a character string, > repeated.measures.columns [1] "3,6,10" into c(3,6,10) for subsequent use. as.numeric(repeated.measures.columns) doesn't work (likely because of the commas) [1] NA Warning message: NAs introduced by coercion I've tried many things including strsplit(repeated.measures.columns, split =

I?ve been using this routine for several years. I?m sorry, I don?t remember where I got it. It works as it should, viz. it blanks the R console. But it requires package rcom and now that requires rscproxy. cls <- function () { require(rcom) wsh <- comCreateObject("Wscript.Shell") comInvoke(wsh, "SendKeys", "\f") invisible(wsh) } > cls()

Dear R-helpers: I am doing some exploratory programming and am considering a routine that has several other routines defined within it, so that I can avoid a large and messy global re-programming to avoid naming conflicts. My question is this: Because it is interpreted, does R have to re-build these internal routines every time the new routine is called? I'm not overly worried right now

Greetings, R-Citizens: I have the good fortune of working with a 19" 1280 X 1024 pixel monitor. My R-code produces nice-looking graphics on this machine but the same code results in crowded plots on an older machine with 800 X 600 resolution. In hindsight this seems obvious, but I didn't anticipate it. My code will be used on machines with varying graphics (and memory) capacity. Is

I have installed Microsoft Vista Release Candidate 1, and R-2.4.0, on a 4 year old DELL box with a 2.26 GHz P4 and 1 gig. It was a clean install ? R is the only non-MS program running. I cannot install packages from CRAN, nor from local zipped files. (I have R-2.4.0 installed on a Windows XP machine and have had no problems so the difficulty seems to be Vista not R, however they aren't

I have installed Microsoft Vista Release Candidate 1, and R-2.4.0, on a 4 year old DELL box with a 2.26 GHz P4 and 1 gig. It was a clean install ? R is the only non-MS program running. I cannot install packages from CRAN, nor from local zipped files. (I have R-2.4.0 installed on a Windows XP machine and have had no problems so the difficulty seems to be Vista not R, however they aren't

I am trying to simulate a series of ones and zeros (1 or 0) and I am using "rbinom" but realizing that the number of successes expected is not accurate. Any advice out there. This is the example: N<-500 status<-rbinom(N, 1, prob = 0.15) count<-sum(status) 15 percent of 500 should be 75 but what I obtain from the "count" variable is 77 that gives the probability of

Greetings: I'm running R2.6.2 on a WinXP DELL box with 2 gig RAM. I have created a new glm link function to be used with family = binomial. The function works (although any suggested improvements would be welcome), logit.FC <- function(POD.floor = 0, POD.ceiling =1) { if (POD.floor < 0 | POD.floor > 1) stop ("POD.floor must be between zero and one.") if

Dear R-Helpers: I'm running R version 2.8.1 on a 1 year old HP Pavilion with a AMD Athelon 64 Dual Core Processor 4800+ 2.50GHz chip, Vista Home Premium SP1, and 2 GB RAM. I can't add packages (even running as Administrator) because I can't connect to a CRAN mirror. > chooseCRANmirror() (After nearly a minute I see the menu, and after any selection I immediately see) Warning