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r - Filter text/tweet column with keywords

I downloaded a timeline and have now a dataframe with 3200 observations of 1 variable (tweets). I want to filter my dataframe using certain keywords but don't get the expected results. Any help is most appreciated.

I tried this function, for example

filter(data.frame, grepl('keyword',text))

and I get one tweet matching my keyword but I know that there are more.

question from:https://stackoverflow.com/questions/65602031/filter-text-tweet-column-with-keywords

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This worked for me

data<-read.csv("yourdata.csv")
filter <- grep("keyword1|keyword2|keyword3", data$text, ignore.case=TRUE)
Tweets_filtered <- data[filter,]

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