similar to: Reading large files in R

Displaying 20 results from an estimated 100 matches similar to: "Reading large files in R"

2003 Sep 09
2
Making R packages (Unix)
Hi: I have have taken over from a colleague who prepared an R package and failed to build it on Windows. I am doing this with unix as I am a mac user. Below is the output I get when I use the build command: [gattuso:unix/R/CO2.Rcheck] gattuso% R CMD build CO2 * checking for file 'CO2/DESCRIPTION' ... OK * preparing 'CO2': * checking whether 'INDEX' is up-to-date ...
2002 Jan 18
2
length of dimnames???
Hi: I have made a lot of progress reading and manipulating large data files, thanks to the help of several of you. I am now stuck with writing the final file with the following error (see also the full transcript below): Error in as.matrix.data.frame(x) : length of dimnames[2] not equal to array extent I do not know what it means and could not find how to get around that in the manual nor
2003 Sep 09
6
Making R packages
Hi: I am posting this message for a colleague who has a lot of trouble to build an R package on Windows. He did not find a solution to his problems on the R-help archives and hopes that one of the R gurus will be able to help. He has a directory "CO2" which should contain all the required files and directories: DATA: DESCRIPTION MAN: R: README SRC: The following command is
2002 Aug 19
2
Help with Lattice
Hi: I have started to use Lattice two days ago and find that it is an outstanding package. I am, however, stumbling on two problems, despite the fact that I have read the help pages as well as two pdf documents on Trellis that I found on the web. 1- I want to remove the ticks on the top and right sides of the panels and did not see any option in "scales" to do so. 2- I would like
2002 Jan 02
1
Combining files
Hi: I am a very recent user of R 1.40 for MacOSX and went through the help files but did not not find the function that I am looking for. I have two comma separated files which I want to partly combine. File 1 has 49670 lines and 26 columns (separated by commas) and looks like this: ...
2002 Aug 21
2
More help with Lattice
Hi: Thanks a lot to Deepayan Sarkar, author of lattice I think, who solved my first query. I am afraid that I have another one. I am plotting several mutipanels boxplots (with one conditioning variable) on one page. The x, y and conditioning variable are all continuous variables. The x and conditioning variables are transformed to shingles before being plotted. The plot looks nice but there
2006 Aug 24
1
Lattice symbol size and legend margins
Hi: I am using the following command: xyplot(dat6$CO3*1e6 ~ dat6$irradiance, data=dat6, group=ref, xlab=list(label=expression(paste("Irradiance (", mu, "mol photons", m^"-2", " ", s^"-1", ")")), cex=1.3), ylab=list(label=expression(paste("Carbonate concentration (x ", 10^"6", " ", kg^"-1",
2007 Jul 23
1
Error using Rd2dvi on OSX
Hi, I run R 2.5.1 on Mac OS 10.4.10 and fail to build a package manual. Below is the transcript. The problem is a "pdflatex: command not found" error but I think that I have a fully working latex install (installed with iInstaller) as I use TeXShop with no problem. Could someone help? Jean-Pierre -----------------------------------------------------------------------------
2005 Jul 26
1
error with scan
Hi: I am trying to read a large (500000+ lines) with scan() as read.table is unable to read it. I get a strange error (below) which says that 'a real' was expected and '5' was read. Can someone help? Thanks, jp > type=list(a=0,b=0,c=0,d=0,e=0,f="",g=0,h=0,i=0) > tmp2 <- scan(file="tmp2.txt", what=type, sep=",",
2018 Jun 03
1
[Bug 106793] New: [NV138] bus: MMIO read of 00000000 FAULT at 409800 [ TIMEOUT ]
https://bugs.freedesktop.org/show_bug.cgi?id=106793 Bug ID: 106793 Summary: [NV138] bus: MMIO read of 00000000 FAULT at 409800 [ TIMEOUT ] Product: xorg Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium
2007 May 15
2
Optimized File Reading with R
Dear All, Hope I am not bumping into a FAQ, but so far my online search has been fruitless I need to read some data file using R. I am using the (I think) standard command: data_150<-read.table("y_complete06000", header=FALSE) where y_complete06000 is a 6000 by 40 table of numbers. I am puzzled at the fact that R is taking several minutes to read this file. First I thought it may
2005 Aug 12
1
quotes
Hi: I have been struggling with gsub to no avail and am seeking help from the list. I want to make a vector of the string "one, two, three" and have tried to: - replace each comma by "," - add " at the beginning of the string - add " at the end of the string to issue the command: col.names <- c("one", "two",
2019 Feb 03
1
Inefficiency in df$col
While doing some performance testing with the new version of pqR (see pqR-project.org), I've encountered an extreme, and quite unnecessary, inefficiency in the current R Core implementation of R, which I think you might want to correct. The inefficiency is in access to columns of a data frame, as in expressions such as df$col[i], which I think are very common (the alternatives of
2006 Dec 18
1
Memory problem on a linux cluster using a large data set
Hello, I have a large data set 320.000 rows and 1000 columns. All the data has the values 0,1,2. I wrote a script to remove all the rows with more than 46 missing values. This works perfect on a smaller dataset. But the problem arises when I try to run it on the larger data set I get an error “cannot allocate vector size 1240 kb”. I’ve searched through previous posts and found out that it might
2007 Jan 10
1
Fw: Memory problem on a linux cluster using a large data set [Broadcast]
Hi I listened to all your advise and ran my data on a computer with a 64 bits procesor but i still get the same error saying "it cannot allocate a vector of that size 1240 kb" . I don't want to cut my data in smaller pieces because we are looking at interaction. So are there any other options for me to try out or should i wait for the development of more advanced computers!
2002 Sep 13
4
tcltk documentation
> Dear all, > I am looking for basic examples of the use of tcltk in R. > Thank you in advance for any information, R-script, ... Most of us started from the handful of examples you can see via demo("tcltk") There are also some good examples in the mailing list archives though some of the R to Tcl/Tk interfaces changed slightly in recent releases. -- According to the
2004 May 12
0
New tutorial (Forgot the address)!
Sorry guys. I was in a hurry and forgot to include the url. Just click <a href="http://wxruby.rubyforge.org/wiki/wiki.pl?Frames_(Part_1)">here</a> or enter in this url: http://wxruby.rubyforge.org/wiki/wiki.pl?Frames_(Part_1) Ugh! Robert _________________________________________________________________ Stop worrying about overloading your inbox - get MSN Hotmail Extra
2007 Mar 05
1
Error in La.svd(X) : error code 1 from Lapack routine 'dgesdd'
Dear R helpers, I am working with R 2.4.1 GUI 1.18 (4038) for MacOSX. I have a matrix of 10 000 genes and try to run the following commands: > model.mix<-makeModel (data=data, formula=~Dye+Array+Sample+Time, random=~Array+Sample) > anova.mix<-fitmaanova (data, model.mix) > test.mix<-matest (data, model=model.mix, term="Time", n.perm=100, test.method=c(1,0,1,1))
2006 Dec 21
1
Memory problem on a linux cluster using a large data set [Broadcast]
Thank you all for your help! So with all your suggestions we will try to run it on a computer with a 64 bits proccesor. But i've been told that the new R versions all work on a 32bits processor. I read in other posts that only the old R versions were capable of larger data sets and were running under 64 bit proccesors. I also read that they are adapting the new R version for 64 bits
2017 Mar 16
52
[Bug 100228] New: [NV137] unknown chipset (137000a1)
https://bugs.freedesktop.org/show_bug.cgi?id=100228 Bug ID: 100228 Summary: [NV137] unknown chipset (137000a1) Product: xorg Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: Driver/nouveau Assignee: nouveau