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re placePatterns() for multiple words replacement in tm

3 messages · Bert Gunter, Kelvin Lam

Original
Kelvin Lam
# 
Hi all,

I wonder how you can replace all words that need to be changed using
replacePatterns().  The following is my code.  I want to replace both "abc"
and "def" to " Yes ".  However, I can only replace the first occurrence in
sample[[1]].
[1] abc def ghi
[1] Yes def ghi

Thank you so much!!!!
Bert Gunter
# 
Don't use replacePatterns() (-- and what package is that from, btw??).

gsub("abc|def","Yes",sample[[1]])

Incidentally, "sample" is a rather bad name for your dataset, as it is the
name of a commonly use R function. Ergo, possibility of confusion.

Bert Gunter
Genentech Nonclinical Biostatisics


-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of Kelvin Lam
Sent: Tuesday, August 11, 2009 9:43 AM
To: r-help at r-project.org
Subject: [R] re placePatterns() for multiple words replacement in tm


Hi all,

I wonder how you can replace all words that need to be changed using
replacePatterns().  The following is my code.  I want to replace both "abc"
and "def" to " Yes ".  However, I can only replace the first occurrence in
sample[[1]].
[1] abc def ghi
[1] Yes def ghi

Thank you so much!!!!
Kelvin Lam
# 
Thanks.  The replacePatterns() is from the text mining package tm().
Bert Gunter wrote: