similar to: Identifying names of matrix columns shared by many matrices

Hello, Hierarchical factors are a very common data structure. For instance, one might have municipalities within states within countries within continents. Other examples include occupational codes, biological species, software types (R within statistical software within analytical software), etc. Such data structures commonly use hierarchical coding systems. For example, the 2007 North

Hello, I've been very impressed by the reshape package and how easy it makes reorganizing statistical data structures. This makes me wonder if there's another package out there that addresses another set of tasks that one often does when preparing data for analysis. For any particular set of analyses, one typically recodes variables and deletes cases and variables. It would be really

On 4/26/10 21:45:55 R P Herrold wrote: > Date: Mon, 26 Apr 2010 21:45:55 -0400 (EDT) > From: R P Herrold<herrold at owlriver.com> > To: Marshall Feldman<marsh at uri.edu> > Cc:r-help at r-project.org > Subject: [R] Upgrading R using the "global library folder" strategy -, > what do you think about it? > Message-ID:<alpine.LRH.2.00.1004262141510.25472

I'm surprised this isn't a FAQ, but I searched all over and could not find a reference to it. Chambers (1998) makes repeated references to "Chapters" in S (e.g., p. 6), but I can find no reference to "Chapters" in R. Since Chapters were not used in earlier versions of S, I'm wondering if R uses them or not. If it does, how does one get them to work? I've

Hi, I am trying to read a tab-delimited file that has trailing tab delimiters. It's a simple file with two legitimate fields. I'm using the first as row.names, and the second should be the only column in the resulting data frame. Initially, R was filling the last column with NA's, but I was able to stop that by setting

Hello, I have a function with these lines: test <- function(object,...){ cat("object: has ",nrow(object),"labels\n") cat("Head:\n") head(object,...) cat("\nTail:\n") tail(object,...) } If I feed it a data frame object, it only prints out the tail part. If I comment out the last two lines of

Hi, I have a bright, diligent second-year graduate student who wants to learn statistics and R and will, in effect, be taking a tutorial from me on these subjects. (If you've seen some of my questions on this list, please don't laugh.) As an undergrad he majored in philosophy, so this will be his first foray into computer programming and statistics. I'm thinking of having him use

Hi, I can't get the colClasses option to work in the readHTMLTable function of the XML package. Here's a code fragment: require("XML") doc <- "http://www.nber.org/cycles/cyclesmain.html" table <- getNodeSet(htmlParse(doc),"//table") [[2]] # The main table is the second one because it's embedded in the page table. xt

Hi, I've been struggling with this problem the last few days and finally discovered it's happening at a very fundamental level. Going through Stephen Turner's tutorial on ggplot2, I entered these base graphics commands: > with(diamonds, plot(carat,price)) > with(diamonds, plot(carat,price), xlab="Weight in Carats", ylab="Price in USD",

Hello, Besides the problem with using "names," one has a similar problem using ".Data" together with "VIRTUAL." Consider the top of p. 295 of the green book. This should work (I had to change "structure" to "junk" because "structure" is a sealed class definition): setClass("junk",

Hi R fans, As a newbie following the five-hour rule (after hitting my head against the wall for five hours, post to this list), I am appealing for some help understanding geom_rect() in ggplot2. What I want to do is very simple. I want to generate a plot of rectangles. Each one represents a business cycle. The x-values will be pairs representing the start and end of each cycle. The y-values

No, you do not necessarily need the XY coordinates. You can also use polygon (field, in your case) adjacency information. See Rogerson, Peter A. 2001. _Statistical methods for geography_. Thousand Oaks: Sage. You might also look at GeoDA, a free and soon-to-be open source spatial analysis package. For your application, it might be easier to use than R. Go to https://www.geoda.uiuc.edu/.

Hello R wizards, What is the best way to read a data file containing both fixed-width and tab-delimited files? (More detail follows.) _*Details:*_ The U.S. Bureau of Labor Statistics provides local area unemployment statistics at ftp://ftp.bls.gov/pub/time.series/la/, and the data are documented in the file la.txt <ftp://ftp.bls.gov/pub/time.series/la/la.txt>. Each data file has five

On 7/27/2010 6:00 AM, r-help-request at r-project.org wrote: > Date: Mon, 26 Jul 2010 11:36:29 -0700 (PDT) > From: xin wei<xinwei at stat.psu.edu> > To:r-help at r-project.org > Subject: [R] how to generate a random data from a empirical > distribition > Message-ID:<1280169389379-2302716.post at n4.nabble.com> > Content-Type: text/plain; charset=us-ascii > >

On 4/25/2010 19:39:52, Tal Galili wrote: > *c) R core implementation ?!* > I hope I am not being rude (or jumping into any open doors) in asking this > but... > What do you think about implementing this strategy into the R basic > installation? > > > Tal, As a general rule, I think R should make upgrading as easy and seamless as possible. Upgrading strategies seem

Hi R gourmets, I am trying to convert an HTML table into an xts object. The table has six columns, with the data of interest in a single row with each cell containing a long, \n-delimited character string. Initially, I work with these strings as elements in a list. This is necessary because the strings in each cell do not translate into a regular matrix with equal-length columns. Once I fix

Hi, Other then rebuilding the plots, is there any way either (1) to combine existing ggplot2 plots or (2) to extract a layer from an existing plot so that it can be added to another? Thanks. -- Dr. Marshall Feldman, PhD Director of Research and Academic Affairs Center for Urban Studies and Research The University of Rhode Island email: marsh @ uri .edu (remove spaces) Contact

Hi, I have two further comments/questions about large datasets in R. 1. Does R's ability to handle large datasets depend on the operating system's use of virtual memory? In theory, at least, VM should make the difference between installed RAM and virtual memory on a hard drive primarily a determinant of how fast R will calculate rather than whether or not it can do the calculations.

Hi All, Just added a Siemens DECT SIP/PSTN S450 phone to login to my A*k server, and I see "Got SIP response 405 "Method Not Allowed" back from 192.168.3.64" but the phone seems to work ok. Any ideas where it falls over in the SIP protocol? I've included this in the debug below. ubiphone*CLI> <-- SIP read from 192.168.3.64:5060: --- (0 headers 0 lines) Nat

I am a new R user, and am struggling with how to add a comma to the tick mark labels in a bwplot or a boxplot. I think the default values of the labels are fine, I just want them to appear with commas. If I use the function boxplot, I can then use axis(2,labels=format(axTicks(2),big.mark=",")) but that just overlays them on the existing labels which I don't know how to