On Jan 8, 2012, at 2:28 PM, jim holtman wrote:
Is this what you are after:
The code below is essentially what I would have imagined to be a
method of programming "cbind.data.frame.fill". It's worth noting that
either reshape2 or plyr (I don't remember which) offer an rbind
version: rbind.data.frame.fill
--
David
more<-c('R is a free software environment for statistical computing',
+ 'It compiles and runs on a wide variety of UNIX platforms')
result<-strsplit(more,' ')
result
[[1]]
[1] "R" "is" "a" "free" "software"
"environment" "for"
[8] "statistical" "computing"
[[2]]
[1] "It" "compiles" "and" "runs" "on" "a"
"wide" "variety"
[9] "of" "UNIX" "platforms"
# determine the longest length to which to pad
maxLen <- max(sapply(result, length))
# now pad the vectors in the list
newResult <- lapply(result, function(x) c(x, rep(NA, maxLen -
length(x))))
# now create your matrix
newDF <- do.call(data.frame, newResult)
# add short names
names(newDF) <- paste("V", seq_len(length(result)), sep = '')
str(newDF)
'data.frame': 11 obs. of 2 variables:
$ V1: Factor w/ 9 levels "a","computing",..: 7 6 1 5 8 3 4 9 2 NA ...
$ V2: Factor w/ 11 levels "a","and","compiles",..: 4 3 2 8 6 1 11 10
5 9 ...
newDF
V1 V2
1 R It
2 is compiles
3 a and
4 free runs
5 software on
6 environment a
7 for wide
8 statistical variety
9 computing of
10 <NA> UNIX
11 <NA> platforms
On Sun, Jan 8, 2012 at 9:43 AM, Dan Abner <dan.abne...@gmail.com>
wrote:
Hello everyone,
What is the most efficient & simpliest way to convert all
components of a
list to separate columns in a matrix?
Is there an easy way to programmatically "pad" the length of the
resulting
shorter character vectors so that they can be easily combined into
a data
frame?
I have the following code that stores the 2 compoents (of differing
lengths) in the same character vector:
more<-c('R is a free software environment for statistical computing',
'It compiles and runs on a wide variety of UNIX platforms')
result<-strsplit(more,' ')
result
mode(result)
class(result)
sapply(result,length)
result2<-unlist(result)
result2
mode(result2)
class(result2)
Thank you,
Dan
[[alternative HTML version deleted]]
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and provide commented, minimal, self-contained, reproducible code.
--
Jim Holtman
Data Munger Guru
What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
