similar to: Row subsetting of data frames (PR#425)

Displaying 20 results from an estimated 30000 matches similar to: "Row subsetting of data frames (PR#425)"

2013 Jul 15
1
pmatch inconsistency
The pmatch help (see also section 4.3.2 in the R Language Definition) claims that pmatch with duplicates.ok=FALSE provides the same functionality as R's argument matching algorithm, modulo how empty strings are matched. Here's an undocumented inconsistency between pmatch and R's argument matching algorithm: > sessionInfo() R version 3.0.1 (2013-05-16) Platform:
2003 Sep 24
1
partial matching in data frame subscripting
I'm not sure if the following is a bug or a feature: > jjmat <- array(1:6, c(2,3), list(c('ABC', 'DEF'), c('xyz', 'tuv', 'qrs'))) > jjdf <- as.data.frame(jjmat) > jjmat['AB', ] Error: subscript out of bounds > jjdf['AB',] xyz tuv qrs ABC 1 3 5 > jjmat[, 'tu'] Error: subscript out of bounds
2011 Jan 18
1
Xen; xm usb-add syntax - or - where is xm usb-attach
Hi all, I'm running Centos 5.5 with Xen 4.0.1 Would like to use a USB key (not a block device) in my domU. Dom0 lsusb yields; Bus 002 Device 004: ID 064f:0bd8 ABC-Systems AB CDE/FG xm usb-add shows; Usage: xm usb-add <domain> <[host:bus.addr] [host:vendor_id:product_id]> Not sure what combo will work in this case. However, I've read some notes regarding xm usb-attach.
2011 Apr 04
5
Creating multiple vector/list names-novice
Hi I have very simple issue as I am still new to the group of R I have basically vector of names for which i want to create mutliple combinations and then place them in different vectors. In some other language I can just place a third dimension to separate list (or matrix) but i do not know how to do it in R. My issue is simple I use cc<-combn(colnames(DD),2) I would need to have this
2016 Oct 04
1
error handling in strcapture
It is also not catching the cases where the number of capture expressions does not match the number of entries in proto. I think all of the following should give an error about the mismatch. > strcapture("(.)(.)", c("ab", "cde", "fgh", "ij", "lm"), proto=list(A="",B="",C="")) A B C 1 a b cd 2 d
2005 Dec 03
2
how to subset rows using regular expression patterns
hi netters, i have a dataframe A with several columns(variables). the elements of column M are character strings. so A$M=c("ab","abc","bcd","ac","abcd","fg",....."fl"). i wanna extract all the rows where A$M match some regular expression pattern. for a simple example, let the pattern be just "ab", i wanna subset
2007 May 31
0
Branch 'as' - 8 commits - libswfdec/swfdec_as_context.c libswfdec/swfdec_as_interpret.c libswfdec/swfdec_as_string.c libswfdec/swfdec_as_strings.c libswfdec/swfdec_as_types.c test/trace
libswfdec/swfdec_as_context.c | 20 + libswfdec/swfdec_as_interpret.c | 9 libswfdec/swfdec_as_string.c | 15 - libswfdec/swfdec_as_strings.c | 2 libswfdec/swfdec_as_types.c | 2 test/trace/Makefile.am | 28 + test/trace/isnan-5.swf |binary
2010 Apr 05
2
spool directories and filename
Hi, Is it possible to configure Asterisk to fetch for files from the spool directory in different directories? For example, fetch voicemail files in /abc/voicemail and call files in /cde/outgoing ?. And is it possible to configure the filename that Asterisk gives to files, like voicemail files? Thanks, Ricardo
2011 Oct 18
1
Function to "lump" factors together?
Sorry about the odd terminology, but I suspect that my intent might be completely missed had I used "aggregate" or "classify" (each of which appears to have some rather special meanings in statistical analysis and modeling). I have some data about software builds; one of the characteristics of each is the name of the branch. A colleague has generated some fairly interesting
1999 May 11
1
model.matrix crashes (PR#189)
With 0.64.1 on Intel RH5.2, abc <- list() abc$abc$abc <- matrix(1:20) mt <- terms(~(abc$abc$abc[,1]==64)|(abc$abc$abc[,1]==65)|(abc$abc$abc[,1]==75) |(abc$abc$abc[,1]==84)|(abc$abc$abc[,1]==85)) model.matrix(mt,model.frame(mt)) crashes. With ab$ab$ab, it does not. Apparently, the bug I reported for 0.64.0 has just been pushed back one step. Jim
2006 Oct 26
1
Pb with .findInheritedMethods
Hi again, Here is a very simplified version of a class hierarchy defined in the Biobase package (Bioconductor). I post here because this seems to be an S4 related problem: setClass("A", representation(name="character")) setMethod("initialize", "A", function(.Object) {.Object at name <- "I'm an A"; .Object})
2009 May 04
1
How to determine connection time between two node ?
Hi all CentOS users, How can i determine connection time during the package walking between two nodes ? But not in my network ! only any two network nodes in world ? For example: Get report time value betwwen www.abc.com and www.cde.com Thanks for all advice. -- Iyi calismalar.Basarilar... Semih Gokalp Istanbul/Turkiye
2007 Sep 04
1
SOLVED: importing huge XML-Files -- new problem: special characters
Hi all, thanks to the people who replied to my question! I finally solved the issue by writing own handlers and using xmlEventParse - which leads to the following problem which is so odd that its probably a bug. I use several special charachter in my XML-File, e.g. umlauts or ? or ? - but no matter how I encode my XML (UTF or ISO) or I escape these characters xmlEventParse always stops
2009 Dec 01
1
explanation for left-side behaviour
Hi there, I'm pretty sure that it's written down somewhere but I cannot find it so far. The little example shows different approaches to replace a substring. Only the last one works. I think it has something to do with the fact that "substr" is used on the left side. Can anybody refer to an explanation for this behaviour? Thanks a lot in advance! Antje values <-
2012 Aug 27
4
?nchar ?strsplit
Hi, my data frame is x<-data.frame(ID=c("abc/def","abc/def/ghi","abc","mno/pqr/st/ab")) I want to split my column ID using "/" as the place to split. How can I do that without telling the code how many sub-columns. I could use nchar(gsub("[^/]","",x$ID)) to get how many "/" are in each row of the column, but could
2013 Nov 01
5
cat with backspace and newline characters
Hi, when mixing newline and backspace characters I get the following output (see below). In the second call, the backspace character is simply not applied. Is this normal behaviour? Thank you. > cat("abc\b") ab> cat("abc\b\n") abc > [[alternative HTML version deleted]]
2008 Jul 25
4
Matrix barplot
Hi, as a bloody R beginner I failed to solve the probably simple problem to create a barplot of the following data read from a file Year A B C 2000 4 3 0 2001 2 1 3 2002 1 2 5 The Barplot should look like 5 | C 4 | A C 3 | AB C C 2 | AB A C BC 1 |
2001 Oct 02
1
problem with while loop with next (was RE: file connection, w hile, readLines and browser)
Dear R-help, I think I have kinda isolated the problem I had to the following: i <- 0 while( {i <- i + 1} < 5) { if(i < 3) next print(i) } This seems to go into an infinite loop. After I break the execution, i has the value 1. At the R prompt, if I start from i <- 0 and keep typing {i <- i + 1} < 5, it eventually evaluate to TRUE. So why does the while loop not work?
2013 Jun 18
1
transform 3 numeric vectors empty of 0/1
Dear all, Without a loop, I would like transform 3 numeric vectors empty of 0/1 of same length Vec1 : transform 1 to A and 0 to "" Vec2 : transform 1 to B and 0 to "" Vec3 : transform 1 to C and 0 to "" to obtain only 1 vector Vec who is the paste of the 3 vectors (Ex : ABC, BC, AC, AB,...) Any idea ? Thank you for your help -- Michel ARNAUD
2010 Jul 13
1
StartsWith over vector of Strings?
Given vectors of strings of arbitrary length content <- c("abc", "def") searchset <- c("a", "abc", "abcdef", "d", "def", "defghi") Is it possible to determine the content String set that matches the searchset in the sense of 'startswith' ? This would be a vector of all strings in content that start with