similar to: Is.integer and testing for integers

Hi, I am trying to write a function to read in a whole text file as a single string ( so I can calculate its "sha1" hash function using package "digest"). I need a single string containing the whole file, and so far I was using paste(readLines(fileName), collapse = ""). Unfortunately this function gives me warnings : incomplete final line found by readLines on

Hi, Today, I performed automatic updates of packages and somehow lost "class" package. I loaded a library that depended on it and got: Error: package 'class' could not be loaded In addition: Warning message: there is no package called 'class' in: library(pkg, character.only = TRUE, logical = TRUE, lib.loc = lib.loc) I tried to load it by instal-package: class (VR) and

Hi, I am looking for functions that would allow me to access raw binary data of R vectors. One way would be to use: x = (1:10)*pi writeBin(x, "temp.bin") r = readBin("temp.bin", "raw", n=length(x)*8) Other to write my own C code. Is there any other simpler way? I this message is a rewording of my yesterday message "Looking for function for Double to

Hi, I was playing with Mandelbrot sets and come up with the following code, I thought I would share: library(fields) # for tim.colors library(caTools) # for write.gif m = 400 # grid size C = complex( real=rep(seq(-1.8,0.6, length.out=m), each=m ), imag=rep(seq(-1.2,1.2, length.out=m), m ) ) C = matrix(C,m,m) Z = 0 X = array(0, c(m,m,20)) for (k in 1:20) { Z =

Hi, I run into following problem. It seems to me that operation in the 3rd line should be valid. > b = matrix(as.raw(0), 8,8) > q = as.raw(1:8) > b[1,] = q Error: incompatible types in subset assignment > length(b[1,]) [1] 8 > typeof(b[1,]) [1] "raw" > length(q) [1] 8 > typeof(q) [1] "raw" Is this a bug or a "feature"? Jarek

Hi, I suddenly started getting strange errors while working on my caTools package: >RCMD install C:/programs/R/rw2011/src/library/caTools ...... preparing package caTools for lazy loading Error in file(file, "r", encoding = encoding) : all connections are in use Execution halted make: *** [lazyload] Error 1 *** Installation of caTools failed *** I searched

Hi, I need to split a string into 2 strings, with the split point defined by the last occurrence of some substring. I come up with some convoluted code to do so: str = "Chance favors the prepared mind" sub = "e" y = unlist(strsplit(str,sub)) z = cbind(paste(y[-length(y)], sub, sep="", collapse = ""), y[length(y)]); y z z[1] z[2] Is there a simpler way

Hi, I am trying to debug my code and looking for any tool to help me out with it. My main problem is with the error messages I can not figure out where they come from (what function produced them) and what do they mean. Is there such a think as list of error messages produced by R and standard R packages, and what do they mean? Or any tool to extract information which function produced the

Hi, Consider the following code: require(XML) xmlFile = paste( "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n", "<mzXML xmlns=\"a\" xmlns:xsi=\"b\" xsi:schemaLocation=\"c\">\n", "<parentFile a=\"a\" b=\"b\" />\n",

Hi, I have a C code which produces array of integers and potentially a string, and I have problems passing the string out. Here is the relevant part of the code: 1 PROTECT(Ret = allocVector(INTSXP, n)); 2 ret = (int*) INTEGER(Ret); /* get pointer to R's Ret */ 3 for(i=0; i<n; i++) ret[i] = data[i]; 4 Free(data); 5 i=1; 6 if (comment) { // comment was found 7 n

Hi, I have a C code which produces array of integers and potentially a string, and I have problems passing the string out. Here is the relevant part of the code: 1 PROTECT(Ret = allocVector(INTSXP, n)); 2 ret = (int*) INTEGER(Ret); /* get pointer to R's Ret */ 3 for(i=0; i<n; i++) ret[i] = data[i]; 4 Free(data); 5 i=1; 6 if (comment) { // comment was found 7 n

Hi, The latest version of R had some changes to functions "readbin() and writeBin() [which] now support raw vectors as well as filenames and connections.". As a result I am working on retiring "raw2bin" and "bin2raw" functions from "caTools" package which do exactly the same. Thanks to Prof. Ripley for bringing this change to my attention. Which brings me

Hi, Consider the following example: sort(10:1, partial=3) ## 1 2 3 7 6 5 4 8 9 10 sort(10:1, index=T) ## $x: 1 2 3 4 5 6 7 8 9 10 ## $ix: 10 9 8 7 6 5 4 3 2 1 sort(10:1, partial=3, index=T) ## 1 2 3 7 6 5 4 8 9 10 The first 2 calls gave expected returns; however, the third one did not returned an index as requested. I could not find anything about it in

Hi, Lately my Latex engine used for checking packages stop working, and I can not figure out how to fix it. When creating my package (caMassClass) I get the * checking caMassClass-manual.tex ... ERROR LaTeX errors when creating DVI version. This typically indicates Rd problems. message. I look in caMassClass-manual.log file and find ! LaTeX Error: File `Rd.sty' not found.

Hi, I was lately debugging parts of my 'colAUC' function in caTools package, and in a process looked into other packages for calculating Areas Under ROC Curves (AUC). To my surprise I found at least 6 other functions: * wilcox.test * AUC from ROC package, * performance from ROCR package, * auROC from limma package, * ROC from Epi package, * roc.area from verification

Hi, Recently I was told by users of some of the function I wrote that they experience crashes in places where logical vector was passed to sum function. However on my computer those functions work just fine. After closer look at documentation of function 'sum', I realized that it is defined only for complex and numeric vectors, so I guess I was using "undocumented feature".

Hi, First, let me thank Jaroslaw for making this survey. I find it quite illuminating. Now the questions: * the #1 solution below (based on cumsum) is numerically unstable. Specifically if you do the runmean on a positive vector you can easily get negative numbers due to rounding errors. Does anyone see a modification which is free of this deficiency? * is it possible to optimize the

Hi, A minor announcement. I just added two functions for reading and writing GIF files to my caTools package. Input and output is in the form of standard R matrices or arrays, and standard R color-maps (palettes). The functions can read and write both regular GIF images, as well as, multi-frame animated GIFs. Most of the work is done in C level code (included), so functions do not use any

Hi, I run into a problem with "R CMD Rd2dvi" command: it gives me "File `Rd.sty' not found" error (See the output message on the bottom). I get the same error when running "RCMD check". My system is: Windows 2000, R version 2.0.1, MiKTeX version 2.4. I do have a Rd.sty file in R_HOME/share/texm directory. I looked through newsgroups for any related discussions

Full_Name: jarek tuszynski Version: 1.8.1 OS: windows 2000 Submission from: (NULL) (198.151.13.10) Example code: > a=array(1:27, c(3,3,3)) > apply(a,2, var) [,1] [,2] [,3] [1,] 1 1 1 [2,] 1 1 1 [3,] 1 1 1 [4,] 1 1 1 [5,] 1 1 1 [6,] 1 1 1 [7,] 1 1 1 [8,] 1 1 1 [9,] 1 1 1 > apply(a,2, mean) [1]