strip: Strip Text

In textclean: Text Cleaning Tools

Description

Strip text of unwanted characters.

strip.character - factor method for strip.

strip.factor - factor method for strip.

strip.default - factor method for strip.

strip.list - factor method for strip.

Usage

strip(x, char.keep = "~~", digit.remove = TRUE, apostrophe.remove = FALSE,
  lower.case = TRUE)

## S3 method for class 'character'
strip(x, char.keep = "~~", digit.remove = TRUE,
  apostrophe.remove = FALSE, lower.case = TRUE)

## S3 method for class 'factor'
strip(x, char.keep = "~~", digit.remove = TRUE,
  apostrophe.remove = TRUE, lower.case = TRUE)

## Default S3 method:
strip(x, char.keep = "~~", digit.remove = TRUE,
  apostrophe.remove = TRUE, lower.case = TRUE)

## S3 method for class 'list'
strip(x, char.keep = "~~", digit.remove = TRUE,
  apostrophe.remove = TRUE, lower.case = TRUE)

Arguments

x	The text variable.
char.keep	A character vector of symbols (i.e., punctuation) that strip should keep. The default is to strip every symbol except apostrophes and a double tilde "~~". The double tilde "~~" is included for a convenient means of keeping word groups together in functions that split text apart based on spaces. To remove double tildes "~~" set char.keep to NULL.
digit.remove	logical. If TRUE strips digits from the text.
apostrophe.remove	logical. If TRUE removes apostrophes from the output.
lower.case	logical. If TRUE forces all alpha characters to lower case.

Value

Returns a vector of text that has been stripped of unwanted characters.

Examples

## Not run: 
DATA$state #no strip applied
strip(DATA$state)
strip(DATA$state, apostrophe.remove=TRUE)
strip(DATA$state, char.keep = c("?", "."))

## End(Not run)

Example output

 [1] "Computer is fun. Not too fun."        
 [2] "No it's not, it's dumb."              
 [3] "What should we do?"                   
 [4] "You liar, it stinks!"                 
 [5] "I am telling the truth!"              
 [6] "How can we be certain?"               
 [7] "There is no way."                     
 [8] "I distrust you."                      
 [9] "What are you talking about?"          
[10] "Shall we move on?  Good then."        
[11] "I'm hungry.  Let's eat.  You already?"
 [1] "computer is fun not too fun"      "no it's not it's dumb"           
 [3] "what should we do"                "you liar it stinks"              
 [5] "i am telling the truth"           "how can we be certain"           
 [7] "there is no way"                  "i distrust you"                  
 [9] "what are you talking about"       "shall we move on good then"      
[11] "i'm hungry let's eat you already"
 [1] "computer is fun not too fun"    "no its not its dumb"           
 [3] "what should we do"              "you liar it stinks"            
 [5] "i am telling the truth"         "how can we be certain"         
 [7] "there is no way"                "i distrust you"                
 [9] "what are you talking about"     "shall we move on good then"    
[11] "im hungry lets eat you already"
 [1] "computer is fun. not too fun."       "no it's not it's dumb."             
 [3] "what should we do?"                  "you liar it stinks"                 
 [5] "i am telling the truth"              "how can we be certain?"             
 [7] "there is no way."                    "i distrust you."                    
 [9] "what are you talking about?"         "shall we move on? good then."       
[11] "i'm hungry. let's eat. you already?"

textclean documentation built on May 2, 2019, 7:22 a.m.