similar to: scan question

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.

On Wed, Oct 11, 2017 at 02:03:20PM +0800, Wei Wang wrote: > On 10/10/2017 11:15 PM, Michael S. Tsirkin wrote: > > On Mon, Oct 02, 2017 at 04:38:01PM +0000, Wang, Wei W wrote: > > > On Sunday, October 1, 2017 11:19 AM, Michael S. Tsirkin wrote: > > > > On Sat, Sep 30, 2017 at 12:05:54PM +0800, Wei Wang wrote: > > > > > +static void ctrlq_send_cmd(struct

On Wed, Oct 11, 2017 at 02:03:20PM +0800, Wei Wang wrote: > On 10/10/2017 11:15 PM, Michael S. Tsirkin wrote: > > On Mon, Oct 02, 2017 at 04:38:01PM +0000, Wang, Wei W wrote: > > > On Sunday, October 1, 2017 11:19 AM, Michael S. Tsirkin wrote: > > > > On Sat, Sep 30, 2017 at 12:05:54PM +0800, Wei Wang wrote: > > > > > +static void ctrlq_send_cmd(struct

On Mon, Oct 02, 2017 at 04:38:01PM +0000, Wang, Wei W wrote: > On Sunday, October 1, 2017 11:19 AM, Michael S. Tsirkin wrote: > > On Sat, Sep 30, 2017 at 12:05:54PM +0800, Wei Wang wrote: > > > +static void ctrlq_send_cmd(struct virtio_balloon *vb, > > > + struct virtio_balloon_ctrlq_cmd *cmd, > > > + bool inbuf) > > > +{ > > > + struct

On Mon, Oct 02, 2017 at 04:38:01PM +0000, Wang, Wei W wrote: > On Sunday, October 1, 2017 11:19 AM, Michael S. Tsirkin wrote: > > On Sat, Sep 30, 2017 at 12:05:54PM +0800, Wei Wang wrote: > > > +static void ctrlq_send_cmd(struct virtio_balloon *vb, > > > + struct virtio_balloon_ctrlq_cmd *cmd, > > > + bool inbuf) > > > +{ > > > + struct

Hi all, I am running 64-bit R 2.15.0 on windows 7. I am trying to use read.delim to read from a file that has 2-byte unicode (CJK) characters. Here is an example of the data (it is tab-delimited if that gets messed up): HITId HITTypeId Title 2Q69Z6KW4ZMAGKKFRT6Q4ONO6MJF68 2LVJ1LY58B72OP36GNBHH16YF7RS7Z 看看句子，写写想法 请看以下的句子，再回答问 So read.delim (code below) doesn't read in correctly. It reads

Hi all, Is there a way to skip non-sequential lines using the "skip" argument in the scan function? E.g., I have a matrix with 100 rows and 1e7 columns. I open a connection and want to read only lines 5, 7, 9, etc [i.e., seq(5,99,2)] It might seem that the syntax to do this would be something like this (if only the "skip" allowed vectors in the same way colClasses does in

It seems to me the following should work (in fact, it comes from someone's SPlus file). Instead, it reads the first 8 lines and then spits out syntax errors. Using nlines=36 works. Using nmax does not. Intel RH5.2 with R90.0. Debugging shows it must be internal. Jim junk <- scan(file="",list(i=0,r1=0,r2=0,lull="",day=""),n=5*36) 1 3 5 no 1 2 1

On Fri, 10 Feb 2023 23:38:55 -0600 Spencer Graves <spencer.graves at prodsyse.com> wrote: > I have a 4.54 GB file that I'm trying to read in chunks using > "scan(..., skip=__)". It works as expected for small values of > "skip" but goes into an infinite loop for "skip=1e11" and similar > large values of skip: I cannot even interrupt it; I

Hello, I have a problem. I have to read a HUGE file which has to be line processed, so I would like to use scan like p <- scan(pfile,what=c(0,0,0,"",0,""),nlines=1) but it continues to read the first line, so I have to add a skip and increment the skip after each read. It takes forever to read a test file of 1 Mb, the real one is in 60's Mb Is there a way to read line

Dear all, I discovered that read.table (RW1.8.0) leaves out data when reading multiple-line records. Replication code at the end Best regards Jens Oehlschlägel > filename <- "c:/tmp/c2.csv" > > data <- data.frame(a=c("c", "e\nnewline"), b=c("d", '"quoted simpleline"')) > > #look at the data >

The control flow was: if (!y) { ppix = ... } if (y) { ... } else if (x) { use ppix for something } else { use ppix for something } Merge the if(!y) block with the two else branches. This avoids a false-positive in the clang static analyzer, it can't know that !y and x are mutually exclusive. The result looks something like this: if (y) { ... } else { ppix = ... if (x) {

Two amendments: > The semantics of the invoke instruction are slightly modified: if an exception > unwinds and it doesn't match anything in the list of catches and filters, > and there is no cleanup, then control doesn't branch to the unwind label, > unwinding simply continues out of the function. in fact the new semantics would be that if an exception doesn't match then

On Dec 2, 2010, at 1:40 AM, Duncan Sands wrote: > Two amendments: > >> The semantics of the invoke instruction are slightly modified: if an exception >> unwinds and it doesn't match anything in the list of catches and filters, >> and there is no cleanup, then control doesn't branch to the unwind label, >> unwinding simply continues out of the function. >

Hello again Is there any way (or an alternative non-linear minimiser) that arguments to the function called in nlm can be passed in version 0.62.4? Like (I believe) nlmin in a well known other program or optimise in R. Do we use global variables? Shurely not! \John -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read

I know it's a common error and there is a lot of help available but still can't resolve the issue: all i am trying to do is to read a csv file from my folder and this is what i get: Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, : scan() expected 'a real', got '1,m,a,F,165,240,26.5,31,0.738,0.704,1.095,0.606,0.847' Can you help? -- View

Hi, Since C++ code compiled with g++ 4.6.3 on Windows (the version included in latest Rtools) now can produce things like '1.#IND' when writing doubles to a file (using the << operator), I wonder whether scan() shouldn't support those things. Right now (with recent R devel and latest Rtools) we get errors like: Error in scan(file, what, nmax, sep, dec, quote, skip, nlines,

The 'read.table' function appears to be up to 10X slower in R 1.4.0 than R 1.3.1 for some of the data sets I read in. I was comparing the source code for the 2 versions and see that it was rewritten in R 1.4.0. I think I found out what part of the problem might be. I was comparing R1.3.1 and R1.4.0 code and it appears that a statement is missing in some of the code for R 1.4. This is

Hi Everyone, I am new R user and am trying to learn by reading the online manual "An Introduction to R" from the R web site. I am trying to practice using the scan() function as explained in the manual. For this I first created three vectors (one a character vector and two numeric one) and saved file "input.dat" in my working directory as: > label <- c("Bill",

Thanks a lot, James!! The problem is fixed. On the version 1.4.0 Mac/darwin (the latest available version for this system) the function read.table (which is called from read.delim etc., too) has the bug you explained. Inserting the row nlines <- nlines+1 after lines <- c(lines, line) removes this bug. M. On Friday, February 22, 2002, at 02:33 PM, james.holtman at convergys.com