similar to: Simple bar plot question

I want to eliminate certain observations in a large dataframe (21000x100). I have written code which does this using a binary vector (0=delete obs, 1=keep), but it uses for loops, and so it's slow and in the extreme it causes R to hang for indefinite time periods. I'm looking for one of two things: 1. A document which discusses how to avoid for loops and situations in which it's

I have a question for our European readers: how common is it to use commas as decimal points in spread-sheet and statistics applications? Is it an inconvenience to require that all data use a period as decimal point? (i.e., 3.14159 rather than 3,14159). We're trying to make our program as foolproof as possible, and would prefer not to give users a chance to have commas as both decimal

The R documentation for some of the foreign package's functions says that the set of variable labels becomes attributes in the resulting data frame. Thus, e.g., 5="strongly agree", 4="agree", etc. I'm happy that the labels are being passed, but unfortunately, when R summarizes the data, it will list it only as categories, and doesn't deal with the

Hi. I want to use R with very large files, a couple hundred megabytes, but R crashes every time that I try. Reading help files seems to indicate that R ought to manage its memory itself. I know I have enough memory since stata handles these files perfectly well. I have a mac running OS 10.3 and am running RAqua 1.8.1. Is there anything I can do to make it deal with these files successfully?

Hi. I'm trying to install a new package. I'm a relatively long-time (though not advanced) R user and have never seen this error before. For the first example, I tried a few different CRAN mirrors. In the second example, the file does exist; I downloaded it from the CRAN website for the package and pasted in the name exactly a few different times to make sure it was right. >

Dieter Menne pointed out that the (small) xml attachment didn't make it. Here is an in-line version (see end of message). Let's hope it works this time. I'm struggling with interpreting XML files created by ADODB as data.frames and I'm looking for advice. Note: This xlm contains a result set which comes from a rectangular data array. I've been trying to play with

Hi I've been running Samba 2.x for years but decided to move up to 3.0.2. I've set up a new samba server with a workgroup NEWBIOSS and netbios name PARETO. Im having problems setting up my domain admins. I used 'net groupmap modify "Domain Admins" unixgroup=domadmin' my 'net groupmap list' shows : System Operators (S-1-5-32-549) -> -1 Replicators

Hi I had a few test shares  created and they were working fine. Users could read or write depending on the windows group that was defined on the share. I have since removed the test shares and created the file structure needed and setup the smb.conf file with the share names.  I have also setup the groups and assigned them to the respective directories.  Problem is the users can connect to

Hi I'm finding it takes ages to download a roaming profile from the server when I log into Win2k or XP. A 4Mb profiles typically takes about 2 minutes (and 2 minutes to write back when I log out). I did a test and copied the profile directory from the server to my PC. Running under Win98 takes 1-2 minutes. Under 2K/XP it takes nearly 5 minutes. However, a single file of 4Mb only takes about

Hi, I have a table for an 1 week exam result for many classes in school, like this: Day Class_ID Test Result 1 Monday 1 Paper Passed 2 Tuesday 1 Oral Passed 3 Friday 1 Paper Passed 4 Monday 3 Paper Passed 5 Sunday 3 Oral Passed 6 Monday 3

Windows (both XP and 98) seems to have a problem with our GUI, written using R's tcl/tk package. When we open another window, and then return to the GUI, the GUI has old pieces of text left from the previous windows and/or places which are cut off where a window had been. Also, when it computes something, the window will often decide to move itself over for no apparent reason, so it moves

Hello. R is having some trouble installing a package because it passed arguments to gcc which were non-existent directories and files. It also didn't find g77, although it's in a directory in my $PATH; I tricked it by making a sym link in /usr/bin. What file does R get these parameters from? I've looked for the parameters in the package source, the install.packages help

Hi I have successfully joined my Sun NAS device to my Samba PDC (version 2.2.10, security=user, encrypt passwords=yes) However, when I try to map a drive to \\nas\home it wont accept my (correct) password and the NAS log says : NetrSamlogon[BIOSS\janet]: SAMBA_ACCESS_DENIED (Samba PDC) Have I missed something ? Do I have to set up a trust account or is it to do with encrypted passwords ? --

Good Afternoon, As per the installation guide, section 30.2.2 I?ve created an efidefault file at /var/lib/tftpboot/pxelinux/pxelinux.cfg/efidefault However, this file is never requested by the 64 bit PXE loader (bootx64.efi), as shown by tcpdump: 75 RRQ "/pxelinux/42272635-0011-5053-ACF2-82A100E615F2" octet tsize 0 blksize 512 59 RRQ "/pxelinux/01-00-50-56-A7-BA-BF"

I am using R-2.10.1 binary from CRAN on a WinXP Pro system. I also use SAS v9.2 on the same box. I just started using the SAS ODBC driver that comes with version 9 of SAS. I have been able to set up an ODBC source for SAS datasets using the driver, and then with RODBC I am able to read a sample SAS dataset. > library(RODBC) > ch <- odbcConnect('sasodbc', believeNRows=FALSE)

Hi all, i'm sure there is an easy way to do this, but i'm stumped, so any help would be appreciated. i have a single column of data for precipitation every 15 minutes over a year. i want to sum the precip to daily data. so the first 96 records = the first day, the second 96 records = the second day, and so on.... is there a way to write a for loop that would sum the data to daily, and

I'm just forwarding this verbatim from somebody who works here. Comments ? mm ----- Forwarded message from Dave Chamberlain <davec at mv.mv.com> ----- > Subject: possible dovecot problem > From: "Dave Chamberlain" <davec at mv.mv.com> > Date: Tue, 20 May 2003 21:29:48 -0400 (EDT) > To: mem at mv.mv.com (Mark E. Mallett) > > Ok, I'm kind of

How does one put quotes within quotes, if it's possible? I've tried replacing one set of the quotes by single quotes. If it's not possible, is there any way to do the following? > cmd <- "read.dta" > opt <- "convert.factors=FALSE" > data.file <- " file="/full/path/name.dta" " > eval(call(cmd,data.file,opt)) Prior to

You might look at "eval" and "parse". Reid Huntsinger -----Original Message----- From: Spencer Graves [mailto:spencer.graves at pdf.com] Sent: Tuesday, March 11, 2003 4:03 PM To: janet rosenbaum Cc: r-help Subject: Re: [R] different file types The command "'source' causes R to accept its input from the named file". I don't know what you mean by

I'm struggling with interpreting XML files created by ADODB as data.frames and I'm looking for advice (see attached example file). Note: This file contains a result set which comes from a rectangular data array. I've been trying to play with parameters to the xmlToDataFrame function in the XML package but I dont get it to extract the data frame. This is what the result should look