similar to: Handling Error Thrown After source(...), read.table(...), and readLines(...)

Hello, Could anybody offer any advice about implementing a Kohonen self organizing map for categorical data? Specifically I am wondering if there are any pre-existent packages that can deal with categorical data and/or how one would compare the input vector of categoricals with the self organizing map nodes. Thanks in advance. George Chen ----- Original Message ----- From: r-help-request at

I suspect the reason for the seek is this: cat("1\n", file = "foobar") f <- file("foobar", blocking = FALSE, open = "r") readLines(f) #> [1] "1" cat("2\n", file = "foobar", append = TRUE) readLines(f) #> [1] "2" cat("3\n", file = "foobar", append = TRUE) readLines(f) #> [1]

Hi, I have been using 'read.table' regularly to read tab-delimited text files with data. No problem, until now. Now I have a file that appeared to have read fine, and the data inside looks correct (structure etc), except I only had 15000+ rows out of the expected 24000. Using 'readLines' instead, and breaking up the data by tabs, gives me the expected result. I do not

On Thu, Dec 14, 2017 at 12:17 PM, G?bor Cs?rdi <csardi.gabor at gmail.com> wrote: > On Thu, Dec 14, 2017 at 7:56 PM, Gabriel Becker <gmbecker at ucdavis.edu> > wrote: > > Gabor, > > > > You can grab the connection and destroy it via getConnection and then a > > standard close call. > > Yeah, that's often a possible workaround, but since this

Hello, I am using R version 1.8.1 on a linux machine (Suse 8.2.). I have problems to use readLines() with urls. This seems to be a problem with our proxy-server. Downloading files work with download.file() with wget but not without: > download.file(url = "http://cran.r-project.org/src/contrib/PACKAGES", destfile = "test.txt", method = "wget", cacheOK = FALSE)

Would it be possible to get that file or a representative subset of it somewhere so that I can reproduce this? Thanks, Michael On Thu, May 10, 2018 at 3:31 PM, Ben Heavner <bheavner at gmail.com> wrote: > When I read a .gz file with readLines() in 3.4.3, it returns text (and a > warning). In 3.5.0, it gives a warning, but no text. Is this expected > behavior or a bug? > >

Hi Jen, This was already resolved for R 3.5.1 by just disabling buffering on terminal file connections like stdin. Sounds like you might want to be running a web service or something instead though. Michael On Tue, Jun 12, 2018 at 4:46 PM, Jennifer Lyon <jennifer.s.lyon at gmail.com> wrote: > Hi: > > I have also just stumbled into this bug. Unfortunately, I can not > change

Gabor, You can grab the connection and destroy it via getConnection and then a standard close call. (it actually lists that it is "closed" already, but still in the set of existing connections. I can't speak to that difference). > tryCatch( + readLines(tempfile(), warn = FALSE)[1], + error = function(e) NA, + warning = function(w) NA + ) [1] NA >

I am using readLines to read a fairly large ASCII file. readLines reads a fixed number of lines, then other R code processes the data, then readLines reads the same number of lines again, then other R code processes the data, then .... Sort of like: conn<-file('filename','r') for (chunk in 1:100000) { Lines<-readLines(conn,n=25) # process "Lines" }

This has nothing to do with on.exit. It is an iteraction between where the warning is signaled in 'file' and your _exiting_ warning handler. This combination has the same issue, tryCatch(file(tempfile(), "r"), warning = identity) showConnections(all = TRUE) as does options(warn=2) file(tempfile(), "r") showConnections(all = TRUE) I haven't looked at the

Appended is the file -- you need to tell your e-mail software to use one of the MIME types that R-devel does accept; text/plain is what I chose ((Yes, as R mailing list server "operator", with a bit of detective work, I was able to find the "uncleaned" e-mail and extract the attachment from it)) Martin Maechler ETH Zurich -------------- next part -------------- An

stdin() is not the same as file("stdin"), see the note in ?stdin. Gabor On Mon, 28 May 2018, 10:41 Martin Maechler, <maechler at stat.math.ethz.ch> wrote: > >>>>> Martin Maechler > >>>>> on Mon, 28 May 2018 10:28:01 +0200 writes: > > >>>>> Ralf Stubner > >>>>> on Fri, 25 May 2018 19:18:58 +0200

I was using readLines to read data from a file which is being written to by another process. readLines documentation says "If the connection is open it is read from its current position". With R 4.4.1 on Linux 5.15.160 this is true but does not seem to be the case as far as R 4.4.1 on MacOS 12.7.6 (Intel) is concerned. Here, the first write to the file is read correctly but subsequent

Are you sure it's not available in patched? It's definitely in the source since 6/1. Michael On Wed, Jun 13, 2018 at 2:19 AM, Martin Maechler <maechler at stat.math.ethz.ch> wrote: >>>>>> Michael Lawrence >>>>>> on Tue, 12 Jun 2018 19:27:49 -0700 writes: > > > Hi Jen, This was already resolved for R 3.5.1 by just > >

Prof. Gentleman (and R-help), Here's an example of what didn't work. I still don't understand why. Function: trycon <- function(file, n) { f.con <- file(file, open="rt") on.exit(close(f.con)) i <- 0 while( length(readln <- readLines(f.con, 1)) > 0 ) { x <- unlist(strsplit(readln, " ")) if(length(x) <= 6 && x[3] ==

As s work-around I suggest readr::read_file. --Ista On Sep 2, 2017 2:58 PM, "Jennifer Lyon" <jennifer.s.lyon at gmail.com> wrote: > Hi: > > I have a 2.1GB JSON file. Typically I use readLines() and > jsonlite:fromJSON() to extract data from a JSON file. > > When I try and read in this file using readLines() R segfaults. > > I believe the two salient

Hello, I called readLines on Suze 9.0 with a directory as parameter instead of a file. R freezed for a very long time; this morning I could read following error message: Error in readLines(paste("/home/",foo,"/",sep="")) : cannot allocate buffer in readLines under W2K I get a more logical error ("cannot open file") (I'm still using R 1.8.1)

You bet - it's available on github at https://github.com/UW-GAC/wgsaparsr/blob/master/tests/testthat/1k_annotation.gz -Ben On Thu, May 10, 2018 at 4:17 PM, Michael Lawrence <lawrence.michael at gene.com > wrote: > Would it be possible to get that file or a representative subset of it > somewhere so that I can reproduce this? > > Thanks, > Michael > > On Thu, May

Hi All, I met a problem using readLines function to return the data from Google maps. readLines(url(" http://ditu.google.cn/maps/geo?q=+qianshuichong,+guichi+anhui,+CN&output=csv&key=ABQIAAAAq8Fnd_oUka-7RdS6BrD7GBTqeABoQuNTXS36G_rkiwQnKRW6GBTkns8JpKz6y6dScgB8827dlddUlg"), n=1, warn=FALSE) [1] "200,4,30.6528380,117.4872250" The above code is ok because the

Working on Windows I have had to deal with CSV files that, unfortunately, contain embedded Control-Zs, i.e. ASCII character 26 in decimal, and the readLines() function in R on Windows (2.15.2 and 3.0.0) appears to truncate at the control-Z. There is no problem at all on Ubuntu Linux with R 3.0.0. Am I mistaken or is this genuine? # Create a small file with embedded Control-Z h3 <-