similar to: terminate R program when trying to access out-of-bounds array element?

As Bert said, redefining functions like "[" is surely inadvisable, because of possibility of breaking codes that depend on the intended behavior. This is a language _feature_. If the problem is indexing beyond array extent, just check for it: Are any values that are going to be used for indexing larger than the length of the object? E.g., if (any(idx > length(x)))

Is there a simple way in R to remove all characters from a string other than those in a specified set? For example, I want to keep only the digits 0-9 in a string. In general, I have found the string handling abilities of R a bit limited. (Of course it's great for stats in general). Is there a good reference on this? Or should R programmers dump their output to a text file and use something

I have some comments on the Fortran code in the fseries package in file 4A-GarchModelling.f , especially the subroutine GARCHFIT and function DSNORM. I appended the code to the end of an earlier message, but it was rejected by some rule. Let me first say that I am grateful that packages for financial econometrics exist in R. Fortran 77 had PARAMETERs, and PARAMETERs equal to 99999 and 200 should

An R script will terminate when one tries to use an undefined variable, with a message such as Error in print(x) : Object "x" not found This run-time error might occur after the script has already been running for some time. In some cases it would be nice to get such warnings before the script is run, just as a syntax error caused by a missing parenthesis is caught. Are there any

Based on examples in R books and the syntax of other programming languages, I expected that n <- 10 assigns the integer 10 to n, but typeof(n) is actually a double. The subscripting expression x[1] is valid, but sprintf("\n %d",1) is not, giving the error Error in sprintf("\n %d", 1) : use format %f, %e or %g for numeric objects One must use instead sprintf("\n

Hi, Infinite recursion in S3 methods seem to crash R on Windows 2000 (R terminating with the ("Rgui.exe has generated errors...") message, rather than throwing an error. This happens with both Rgui and Rterm. The following toy example triggers this: myf <- function(x, ...) UseMethod("myf") myf.default <- function(x, ...) myf(x) myf(1) ...R crashes... Which I

Hi. I'm trying to create a 3d plot for a teaching example of finding a least-squares estimate of the parameters to fit a line to some data. I was hoping to get a nice plot with a clear, single minima where the derivative of the surface is zero. No matter how much I tinker, I can't seem to get a simple straightforward plot. Am I doing something wrong? Thanks in anticipation, Ross-c x

Is there a way to exclude from the namespace all variables other than function arguments and local variables? For example, I would like the following code a = 2.0 mult <- function(x) { pi = 3.14 return(pi*a*x) } print(mult(10.0)) to say "a not found" rather than using a = 2.0 inside function mult. Thanks. Vivek Rao

I would like to see R packages arranged by topic. CRAN Task Views are at http://lib.stat.cmu.edu/R/CRAN/src/contrib/Views/ , but I'd like something more detailed. For example, the IMSL Fortran library, version 4 is easy to navigate and has procedures arranged according to following topics: Basic Statistics Regression Correlation Analysis of Variance Categorical and Discrete

I have a dataset of the form Year tosk.fai tosk.isd tosk.gr ....... tosk.total hysa.fai hysa.isd ... and so on. I want to sum all the columns using the first four letters in the columns label(e.g. 'tosk', 'hysa' etc.). How can you do that? Also, the sums should be without the '.total'column (e.g. 'tosk.total') as this serves as a check that

I'm trying to manipulate/change a formula prior to passing it to another function. A simplified example: User passes formula to my function: y~x My function does: lm(transform(y)~x) Here, transform() is added to the model's response. What is the best way to accomplish this?

Hi R! I am reading in a text file which has one column of alpha data and 5 columns of numeric data. There is a header row. I would like the alpha data column to just be character rather than factor. Is there a way to do this, please? I'm thinking that it might be I() but can't figure out exactly how. Thanks, Laura mailto: lauraholt_983 at hotmail.com R 2.0.1 Windows

hello, i wonder how is string represent in R. if i have a string s= "hello", how can i refer to first character in the string s? also if i have s1 = "hello.1", s2 = "ok.1", how can i separate the s1 into "hello" "1" and s2 into "ok" and "1"? I have tried to use the substring function, but i don't where i can get the index

Hi all Is there any reason why the parameter i in a "for" loop ignores a value of zero? For example sim=c() p=.2 for(i in 0:5) {sim[i]=dbinom(i,5,p) } sim [1] 0.40960 0.20480 0.05120 0.00640 0.00032 In this example the quantile i= 0 was ignored since dbinom(0,5,p) [1] 0.32768 The same behaviour occurs if I use a while loop to perform the same calculation: sim=c() p=.2 i=0

Hi there, I am working on a project which needs the value of the interaction area under two distributions( eatimated by kernel density estimators). For example: x<-rnorm(100,0,1) y<-rnorm(100,0.2,1) density(x) # This produces the summary of dependent variable and independent variable. How can I get the individual values of variables and reform a curve to calculate the area under

Source: xen Version: 4.4.1-9+deb8u1 Severity: serious Justification: fails to build from source Tags: sid stretch User: reproducible-builds at lists.alioth.debian.org Usertags: ftbfs X-Debbugs-CC: reproducible-builds at lists.alioth.debian.org Dear Maintainer, The package fails to build: symbols.c: In function ?symbols_lookup?: symbols.c:23:61: error: array subscript is above array bounds

https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=545 Summary: Array subscript is above array bounds Product: iptables Version: CVS (please indicate Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: ip6tables AssignedTo: laforge@netfilter.org

Hello, probably this isn't hard, but I can't get R to do this. Thanks for your help! Assume I have a matrix of two covariates: n <- 1000 Y <- runif(n) X <- runif(n,min=0,max=100) data <- cbind(Y,X) Now, I would like to compute the local average of Y for each X interval 0-1, 1-2, 2-3, ... 99-100. In other words, I would like to obtain 100 (local) Ybars, one for each

I am revising the section in R-admin on platforms. When I asked about locales earlier this year I got no reply about HP-UX and IRIX, so I will presume that no one has built R on those OSes recently. If you have, please send me the OS number and the flags you used. Platforms where I have seen recent reports: Linux MacOS X Solaris 8, 9, 10 (any Solaris 7 users please let me know) AIX 5.1

Hi All, I need to sample a vector ("old"), with replacement, up to the point where my vector of samples ("new") sums to a predefined value ("target"), shortening the last sample if necessary so that the total sum ("newsum") of the samples matches the predefined value. While I can easily do this with a "while" loop (see below for example