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R Programming question How can I get rid of repeated items in sample column from this dataframe(df)? df = read.csv(test.csv) df

R Programming question

How can I get rid of repeated items in "sample" column from this dataframe(df)?

df = read.csv("test.csv") df <- na.omit(df) sample <- unique(unlist(strsplit(as.character(df$sample), ",")))

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