similar to: Simple error handling in R

Dear R and Sweave users, Is there a way to have optional sections in a Sweave-generated report document, complete with section header(s), text and code chunks? In other words, I'd like for my report to include or omit certain sections based on the data itself. For example, If I examine the input dataset early on in the report and set a variable has_daily_data = TRUE, then I'd like to

Deae R helpers, the problem I'm facing today is related to the manipulation of a string. The string is coming from a a porosimeter, whose control is under a complicate set-up of two computers One (running on DOS) is controlling directly the hardware, while the other (running on win XP) which process the data is connected to the first one via serial. I get the data from this last computer.

I've not been able to install rjags successfully in Ubuntu 10.04 : ** testing if installed package can be loaded Error : .onLoad failed in loadNamespace() for 'rjags', details: call: dyn.load(file, DLLpath = DLLpath, ...) error: unable to load shared library '/home/scott/R/i486-pc-linux-gnu-library/2.11/rjags/libs/rjags.so': libjags.so.2: cannot open shared object file:

Dear R and odfWeave users, I am looking for a way to automate generation of many reports using odfWeave. All reports would use the same input ODT file, the only difference would be in the name of the dataset which will be analyzed in any particular report. Right now, the name of the dataset is hardcoded in the first code chuck in the input file: <<01 get data, echo=TRUE>> station =

Dear R experts, Can anyone running R on Linux share how they use the "Search Engine & Keywords" page of R documentation? I cannot do any javascript on this page, either searching for a term or following the keyword links. I tried Konqueror (3.0.4, with javascript globally enabled), Mozilla (1.1), and Galeon (1.2.5), but none of them do anything... Sorry, I don't know

Dear R users, I have a question on using weighted.mean() while aggregating a data frame. I have a data frame with columns Sub, Length and Slope: > x[1:5,] Sub Length Slope 1 2 351.547 0.0025284969 2 2 343.738 0.0025859390 3 1 696.659 0.0015948968 4 2 5442.338 0.0026132544 5 1 209.483 0.0005304225 and I would like to calculate the weighted.mean of Slope, using Length

Dear R experts, I am writing a multi-page PDF file and would like to put a header on each page. Is there a way to test a graphic device to see if a new page is started (so that I know when to write the header)? I could simply count the plots made (each page has the same number of plots), but wanted to see if a more general solution is available. Thank you, Aleksey -- Aleksey Naumov GIS

Dear R-users, the problem I'm facing today is to write a multicolor main title in a plot. I would like to have 3/4 colors to help people in the audience to visually realize what is what in a 4x2 plot array On top of each plot I would like to have two lines. The 1st line will indicate what is plotted The 2nd line will indicate a a reference Graphically speaking I would like a result similar

Dear R users, I wonder if there is a simple way to select a random and non-overlapping subset of a vector? Say, I need to randomly select 10 out of 100 numbers in a vector V. By "non-overlapping" I mean that a number in any position in V (V[1]...V[100]) should be selected at most once (i.e. selection without recycling). I could simplu use a uniform distribution to generate selection

Dear R users, I am just starting with R (v. 1.0.0) and I use Vehables & Ripley's MASS book for examples. In the intro session, there is an example of a 2D histogram on an 8x8 grid: x <- rnorm(1000) y <- rnorm(1000) contour(hist2d(x,y,,,8,8)) R complains: Error in contour(hist2d(x, y, , , 8, 8)) : couldn't find function "hist2d" I looked for hist2d() in the

Dear R-helpers, the problem I'm facing today is to convince lattice to paint some areas in gray. The areas I would like to have in gray, are confidence bands I've googled around in the mailing list archives and eventually find some clues. This link is my starting point http://tolstoy.newcastle.edu.au/R/e2/help/07/04/15595.html I'm reproducing here the code for your convenience est

Dear List, I would like to plot a simple legend with two math expressions, e.g. plot(0) legend(1, 0.5, expression(sigma[i], sigma[j])) The difficulty is that i and j should be variables rather than strings "i" and "j". In other words I'd like to do something like: i = "A" j = "B" legend(1, 0.5, expression(sigma[i], sigma[j])) and have "A"

Dear R users, I have a very simple question. What is the easiest way to recode data in one of the columns of a data frame and put it into a new column? For example, here is a simple data frame: var1 1 1 2 2 3 3 How do I add a new column to data - 'var2' in which I group values in 'var1', for example: var1 var2 1 1 4 2 2 4 3 3 5 It's got to

Dear R users, I have two related questions about scoping and data encapsulation. One is fairly specific - I am looking at "scoping.R" which is used in demo(scoping) - it's an example of lexical scoping and encapsulation. Where is the 'total' stored? It is not an attribute in 'ross' or 'robert' however, functions like balance() have access to it. Is it more

I'm looking for a plugin for Kate (or any other good text editor for linux) (KDE 3.x) which will highlight the R syntax. The link on www.r-project.org is dead! Any ideas?? Thanks Lars

Dear R users, I have to catch a nasty bug and would appreciate any advice or help! I get a segfault (core dumped) that happens in one of my own functions. The problem is, it does not happen most of the time, only sometimes, so it's very hard to reproduce. Or it may run ok in interactive mode, but bug out in batch mode. Also, it tends to happen more on the slower of my 2 machines (PII 266),

Hi R users, dev2bitmap() is not working for me in R-1.1.0. It says: > dev2bitmap("aaa.png") Error in device(...) : Object "width" not found Anyone else has this problem? Aleksey -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info",

A question, althought it is not strictly samba pertinent: I have some Win2k server that offers dial-in to local users. Today all stopped working, but the ones using linux ... However these are not sufficient, so i ask here [since it is probable many people have win2k hosts around) - how to , logging in the win2k server with ssh, restart RAS ? Of couse i can use only CLI programs ... at woest ...

Ok, downloading the BackupPC RPM directly did not work to myriad dependencies and sub-dependencies. How do I add the Test repository to my yum config, please? Aleksey On 7/31/08, Aleksey Tsalolikhin <atsaloli.tech at gmail.com> wrote: > Hi. I just installed CentOS for the first time, to make a BackupPC server. > > However, when I try to install BackupPC using yum, I get the

Dear R-users, after seeking for help in R-search I did not find any hint on my particular problem. Countless help on "true" overlay, but nothing on this. Please consider the following: par(mfrow = c(2, 1)) T <- seq(0, 20, by = 0.01) ## PLOT 1 plot(T, 30*exp(-0.65*T), type = "l" ) points(T, 30*exp(-0.26 * T), type = "l", lty = "F8") points(T,