Hello,
This is why the posting guide says that you sholud provide a data
example. Try the following.
dat <- read.table(text = "
ID, Data
1, I love oranges and apples
2, Oranges are good so we must eat them and also drik oranges
3, Apples are not that good like oranges so eat oranges
", sep = ",", header = TRUE, stringsAsFactors = FALSE)
dat
word <- "oranges"
where <- sapply(dat$Data, function(.x) gregexpr(tolower(word), tolower(.x)))
result <- sapply(where, length) # count them
names(result) <- dat$ID
result
Hope this helps,
Rui Barradas
Em 09-03-2013 16:01, Sudip Chatterjee escreveu:
Hi All,
This is very helpful, but my data looks like this
ID Data
1 I love oranges and apples
2 Oranges are good so we must eat them and also drik oranges
3 Apples are not that good like oranges so eat oranges
& I would like to count # of oranges in each row. How do I go about it ?
Warm Regards
On Sat, Mar 9, 2013 at 4:20 AM, Rui Barradas <ruipbarra...@sapo.pt> wrote:
Hello,
I had thought of something like that, but I'm not sure if the match must
be exact. If not, grep seems better. More complicated and slower but more
flexible.
Rui Barradas
Em 08-03-2013 21:32, arun escreveu:
Hi,
You can also try:
res2<-rowSums(x==word)
res1<-sapply(where,length)
res1[]<- sapply(res1,as.numeric)
identical(res1,res2)
#[1] TRUE
A.K.
----- Original Message -----
From: Rui Barradas <ruipbarra...@sapo.pt>
To: Sudip Chatterjee <sudipanal...@gmail.com>
Cc: r-help@r-project.org
Sent: Friday, March 8, 2013 4:26 PM
Subject: Re: [R] Word Frequency for each row
Hello,
I'm not sure I understand, but see if the following is an example of
counting occurences of a word in each row.
set.seed(1855)
x <- matrix(sample(LETTERS[1:5], 400, replace = TRUE), ncol = 4)
word <- "A"
where <- apply(x, 1, function(.x) grep(word, .x))
sapply(where, length) # count them
Hope this helps,
Rui Barradas
Em 08-03-2013 16:04, Sudip Chatterjee escreveu:
Hi All,
I am wondering if there is any examples where you can count your
interested "word" in each row. For an example if you have data with
*'ID*'
and '*write-up*' for 100 rows, how would I calculate the word frequency
for
each row ?
Thank you for all your time.
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PLEASE do read the posting guide http://www.R-project.org/**
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and provide commented, minimal, self-contained, reproducible code.
______________________________________________
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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.
