r grep multiple patterns
For a multiple pattern matches (present in a character vector), i tried to apply grep(paste(States,collapse="|), Description) . It works fine, but the problem here is that. Consider, Descritpion=C("helloWorld Washington DC","Hello Sta, In addition to @Marek's comment about not including fixed==TRUE , you also need to not have the spaces in your regular expression. It should be "A1|A9|A6" . You also mention that there are lots of patterns. Assuming that they are in a vecto,In addition to @Marek's comment about not including fixed==TRUE , you also need to not have the spaces in your regular expression. It should be "A1|A9|A6" . You also mention that there are lots of patterns. Assuming that they are in a vector, Matching a string with different possibilities using grep 6 answers. I am using grepl() in R to search if either of the following Genres exist in my text. I am doing it like this right now: grepl("Action", my_text) | grepl("Adventure",Hi I want to search for multiple pattern as grep is doing for a single pattern, but this obviously not work: > grep("an", month.name) [1] 1 > grep("em", month.name) [1] 9 11 12 > grep("eb", month.name) [1] 2 > gre, What about applying the regexpr function over a vector of keywords? keywords <- c("dog", "cat", "bird") strings <- c("Do you have a dog?", "My cat ate by bird.", "Let's get icecream!")
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 r grep multiple patterns 相關參考資料
Multiple pattern Matching in R - Stack Overflow
For a multiple pattern matches (present in a character vector), i tried to apply grep(paste(States,collapse="|), Description) . It works fine, but the problem here is that. Consider, Descritpion... https://stackoverflow.com r - grep using a character vector with multiple patterns - Stack ...
In addition to @Marek's comment about not including fixed==TRUE , you also need to not have the spaces in your regular expression. It should be "A1|A9|A6" . You also mention that there ... https://stackoverflow.com r - grep using a character vector with multiple patterns - Stack Overflow
In addition to @Marek's comment about not including fixed==TRUE , you also need to not have the spaces in your regular expression. It should be "A1|A9|A6" . You also mention that there a... https://stackoverflow.com r - Use grepl to search either of multiple substrings in a text ...
Matching a string with different possibilities using grep 6 answers. I am using grepl() in R to search if either of the following Genres exist in my text. I am doing it like this right now: grepl(&qu... https://stackoverflow.com R help - grep for multiple pattern? - Nabble R
Hi I want to search for multiple pattern as grep is doing for a single pattern, but this obviously not work: > grep("an", month.name) [1] 1 > grep("em", month.name) [1] 9 11 ... http://r.789695.n4.nabble.com regex - R grep: Match one string against multiple patterns - Stack ...
What about applying the regexpr function over a vector of keywords? keywords <- c("dog", "cat", "bird") strings <- c("Do you have a dog?", "My cat a... https://stackoverflow.com |