similar to: How to get the list of the files when you read zip file by gzfile or unz

I get unexpected behavior from "readLines()" and "scan()" depending on how the file is opened with "gzfile" or "unz". More specifically: > file <- gzfile("file.gz") > readLines(file,1) [1] "a\tb\tc" > readLines(file,1) [1] "a\tb\tc" > close(file) It seems that the stream is rewound between calls to readLines.

Hi Sorry, I am clearly missing something here. I want to read this file directly: ftp://ftp.sanger.ac.uk/pub/mirbase/targets/v5/arch.v5.txt.gallus_gallus. zip I tried using read.table(gzfile("ftp://ftp.sanger.ac.uk/pub/mirbase/targets/v5/arch.v5 .txt.gallus_gallus.zip")) But I got an error: Error in open.connection(file, "r") : cannot open the connection In addition:

I am having problems getting the unz() function to work as a connection to start reading a file... z <- unz("c:/temp/stoxx.zip", "close_tmi_components.txt", "r") readLines(z,2) yields the following problems: > z <- unz("c:/temp/stoxx.zip", "close_tmi_components.txt", "r") Error in unz("c:/temp/stoxx.zip",

I would greatly appreciate some example of correct usage of function unz. I have to download and uncompress the following web compressef file: ftp://ftp.sanger.ac.uk/pub/mirbase/targets/v5/arch.v5.txt.homo_sapiens.zip I tried the following command that does not work: Targets.rec <- readLines(zz <- unz("ftp://ftp.sanger.ac.uk/pub/mirbase/targets/v5/arch.v5.txt.homo_sapiens.zip"))

Not sure this is a bug in R. Maybe its a bug in my understanding of unz(). The character 'b2' (hexadecimal) is in position 535 of line 1 of 'naughty.csv'. This character appears as superscript '2' and came to me in an EXCEL file that I converted to text in a comma separated ( *.csv ) format. The first line gets truncated by readLines after 534 characters using unz():

Full_Name: Vadim Ogranovich Version: Version 1.6.0 (2002-10-01) OS: Red Hat 7.1 Submission from: (NULL) (209.99.241.1) The following sequence of commands crashes my R session. The first weirdness happens after the second command that appears not to change the "foo.gz" file, no error generated. > con <- gzfile("foo.gz", open="w"); cat("goo\n",

Hi, I am making multiple calls to gzfile() via read.table(), e.g. > x <- read.table( gzfile( "xxx.gz" ) ) After i do this many times (I haven't counted, but probably between 50 and 100 times) I get the error message: Error in open.connection(file, "r") : unable to open connection In addition: Warning message: cannot open compressed file 'xxx.gz' however, I

Hi, I'm running into more issues when reading data from a gzfile connection. If I read the data sequentially with successive calls to readBin(), the data I get looks ok. But if I call seek() between the successive calls to readBin(), I get corrupted data. Here is a (hopefully) reproducible example. See my sessionInfo() at the end (I'm not on Windows, where, according to the man page,

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? 3.4.3: > source_file = "1k_annotation.gz" > readfile_con <- gzfile(source_file, "r") > readLines(readfile_con, n = 5) [1] "#chr\tpos\tref\talt\t <truncated output here> Warning message: In

Found the simpliest way of seeing I bug I encountered doing "R CMD check --use-gct": Just launch R (with --vanilla), and do this: > ?gctorture # this work > gctorture() > ?gctorture Error in gzfile(file, "rb") : can only weakly reference/finalize reference objects # this does not It seems that when gctorture() is on gzfile() doesn't work.

Hi I have been trawling the web, FAQs, and R manuals for help on the following issue, but have failed and was wondering if anyone has a solution to the following problem: After having installed R 2.6.2 for Windows (binary), I tried to install various packages. Every time I try loading a package (any package) via the built-in menu, I run into the following error message. >

Hello ... Are there any known problems or even gotchas to look out for when using a gzfile connection in read.csv/read.table in Windows? In the package PROcess, available at www.bioconductor.org/repository/devel/package/html/PROcess.html there are two files in the PROcess/inst/Test directory which are of the extension *.csv.gz. With both files, if I open up a gzfile connection, say: vv <-

Hi, For the first time I have a strange behaviour when checking a package before 'packaging' the code. Looks like a file cannot be read. rcmd check pgirmess * using log directory 'U:/Documents and Settings/pgiraudo/Mes documents/R/pgir_arch/pgirmess_arch/On work/pgirmess.Rcheck' * using R version 2.13.2 (2011-09-30) * using platform: i386-pc-mingw32 (32-bit) * using session

Hi List I have a series of zip archives each containing several files. One of these files is called goCats.txt and I would like to read it into R from the archive. It's a simple tab delimited text file. pathToZip <- '/home/iain/Documents/Work/Results/bovineMacRNAData/deAnalysis/afInfection/commonNorm/twoHrs/af2hrs.zip' z <- unz(pathToZip, 'goCats.txt', 'r') zT

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, I have some text files that do not have trailing \n on the last (incomplete) line; how do I read in the last line? e.g. here is a test case: [linux + R version 2.6.1 (2007-11-26) ] z <- gzfile("short.gz", open="w") cat("7\n5\n3", file=z) close(z) z <- gzfile('short.gz') readLines(z) [1] "7" "5" readLines would indicate that

I received several answer to my querry re reading zipped files, R.Gentleman, Liaw Andy, BD Ripley,J Holtman, A.Matt, and others, sorry if I missed your names. a- use pipe to run external unzip to a file and read from there b- use gzfile() to open directly a gzipped file c- use zip.file.extract() solution b works like a charm, unfortunately it open gzipped files and not zipped files, would it be

If I open a tgz archive with gzfile and then parse it using readLines I miss the initial line of each member of the archive - and also the name of the file although the archive otherwise complete (but useless!). Is there any way within R to extract both the list of files in a tgz archive and to extract any one of these files? Clearly I can use zcat and tar on Linux, but I need this to work

Hello, I have just installed v 2.6.2 on a new computer running Windows XP and tried to perform 'update packages' via the menu option on the R console. Any advice on the following problem is much appreciated. Bob Below are the warning and error messages received. A search of the hard drive does not reveal any file including "RtmpgMMu03/libloc" . >

Hi all, My code: x <- scan(gzfile("file"),what='integer') x is imported, but as mode "character" rather than "integer". I know I can do as.integer() when importing, but am still trying to figure out why the above occurs. When I do summary(as.integer(x)), there are no NAs introduced by coercion, so the vector really is all integer. Also, is the above