similar to: Learning the R way – A Wish

Is there any way to search the console during an interactive session? I've looked and looked, and can not find one. In some add-on package, maybe? Sorry to be so basic, but help would be greatly appreciated. andrewH -- View this message in context: http://r.789695.n4.nabble.com/Searching-the-console-tp3797884p3797884.html Sent from the R help mailing list archive at Nabble.com.

Dear folks-- Suppose I have an expression that evaluates to a string, and that that string, were it not a character vector, would be a symbol. I would like a function, call it doppel(), that will take that expression as an argument and produce something that functions exactly like the symbol would have if I typed it in the place of the function of the expression. It should go as far along the

Dear Folks-- Is there a data frame analog to sparse matrices? I am working with a panel data set that has a large number of variables that are redefined repeatedly or exist for only a few years (out of 48). In my current structure, where variables are columns and rows are years, more than 90 percent of the cells and more than 3/4 of the total size of my file are NAs. I am wondering if there is

I have a humongous csv file containing census data, far too big to read into RAM. I have been trying to extract individual columns from this file using the colbycol package. This works for certain subsets of the columns, but not for others. I have not yet been able to precisely identify the problem columns, as there are 731 columns and running colbycol on the file on my old slow machine takes

Dear folks, I?m trying to build a function to create and make available some variables I frequently use for testing purposes. Suppose I have a function that takes some inputs and creates (internally) several named objects. Say, fun1 <- function(x, y, z) {obj1 <- x; obj2 <- y; obj3 <- z <missing stuff> } Here is the challenge: After I run it, I want the objects to be

Dear folks ? I have a large (26 gig) ASCII flat file in fixed-width format with about 10 million observations of roughly 400 variables. (It is 51 years of Current Population Survey micro data from IPUMS, roughly half the fields for each record). The file was produced by automatic process in response to a data request of mine. The file is not accompanied by a human-readable file giving the

Unless I've missed something (which is possible) there hasn't been any "public progress announcements" regarding rpmfusion in the past several weeks. Is there anything new to report? My ulterior motive is that I would love to have the convenience of a one-stop rpm shop for Centos/RHEL and Fedora, and it's my understanding that's what rpmfusion is intended to be... --

Dear folks -- There are a number of functions -- I am thinking of str() as an example -- that produce text as a side-effect, rather then returning it. Is there any way to send the text produced by such functions into a character variable? Any suggestions would be greatly appreciated. andrewH -- View this message in context:

Dear folks: Let?s suppose I want a function to print return the name of the object passed to it. > myname <- function(object) {out<-deparse(substitute(object)); out} This works fine on a single object: > O1 <-c(1:4) > myname(O1) [1] "O1" However it does not work if you use lapply to pass it the same object from a list: > O2 <-c(1:4) > object.list <-

Dear Folk-- Suppose I have some objects A, B & C, and a function getDots <- function(...) {args <- list(...) etc.} If I do a call to getDots(A, B, C) then the variable args will be assigned to a list which contains the objects to which A, B & C refer, but which will not (except by happenstance) contain the names A, B, or C. I would like getDots to return a named list, with the

Is there a way I can have "voice mail check" calls coming from my internal users automatically get to the right extension, without having the user enter their extension? I'm thinking that I could have the local SPA boxes translate, or have each user live in a context where the extension in question exists uniquely per user, but both of these seem kludgey. Thanks in advance for

Dear Folks-- I'm trying to make a function that takes the columns I select from a data frame and then uses a for loop to print some information about each one, starting with the column name. I succeed in returning the column name, but nothing else I have tried using the variable colName, containing the name of the column, to refer to the column itself has worked. Below I show my

Dear folks? Is there a function to correctly find (and count) the NAs in a factor when exclude=NULL, regardless of whether their origin is in the original data or by subsequent assignment? In example number 1 below, where NAs are assigned by is.na()<-, testing the factor with is.na() finds the correct number of NAs. In example number 2, where the NAs are from the data, neither is.na(), ==NA,

Almost done with my centos handbook project on my server. Last two things are related, backups. Looking for anyone who feels like chiming in on mysql backups...this is what I am thinking at this point. Mysql backup system for all websites ---------------------------------------------------- Each website is on a separate server, each running mysql, no site is related to the others. A server

I have a couple of hundred American Community Survey Summary Files files containing rectangular arrays of data, mainly though not exclusively numeric. Each file is referred to as a sequence (henceforth "seq"). From these files I am trying to extract particular subsets (tables) consisting of a sets of columns. These tables are defined by three numbers (now in columns in a data frame):

Hi, I recently created a function which uses grid with a viewport constructed with grid.layout() to position four plots on a plot device. My question is what's the best way to programatically traverse each element of the viewport? The grid is 5x5 and the four plots occupy positions (2,2), (4,2), (2,4), and (4,4). Here's the viewport code: pushViewport( viewport(

I'm attempting to refactor an R script that does a lot of plotting, among other things. Ideally I'd like to do something like setup # does pdf(...) for each part of input { plot(process(part)) } cleanup # does dev.off() but have problems: 1 I'm plotting to PDF, so everytime I dev.off() creates a new file, and I want everything in one file (as does my boss :-) 2 I'm

ear folks ? I have a question, though it is more of a logic- or a good practices-question than a programming question per se. I am working with data from the American Community Survey summary file. It is mainly categorical count data. Currently I am working with about 40 tables covering about 35 variables, mainly in two-way tables, with some 3-way and a handful of four-way tables. I am going to

So I'm sure many of you are using or have tried to use TrixBox. Thus far, I'm in love with it. I haven't had a single snag. Then again, I don't need to get into anything overly nitty gritty with my Asterisk box. What are your views? -- Want a free copy of "TrixBox Made Easy"? Read the contest rules

Hi List! any body use www.simpletelecom.com? I subscribe to www.simpletelecom.com for A-Z termination and paid US$15.00 and US$70.00 via credit card in two days, but my account has US$15.00 only. I checked my credit card from the bank and they said me the payment already paid to merchant. I've lost US$70.00 :( so anyone here has experience with them? are they a SCAM? Thanks! </Madhawa>