CODEWITHSUNDEEP
rset
dhrice
dhrice

Reputation: 89

R Count Words in String Only Once

My data looks something like this:

df <- c("I am a car","I will","I have","I give","A bat","A cat")
df <- as.data.frame(df)
colnames(df) <- c("text")
df$count <- str_count(df$text, regex("a{1}?",ignore_case = T))

I want to count just the one instance of 'a' in the first row, not every time that it appears in the whole string. Thanks!

Upvotes: 1

Views: 161

Answers (1)

akrun
akrun

Reputation: 887213

Perhaps we need grep

as.integer(grepl("\\ba\\b", df$text, ignore.case=TRUE))

Or using stringr

library(stringr)
as.integer(str_detect(df$text, "\\ba\\b"))
#[1] 1 0 1 0 1 1

Upvotes: 2

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