R在数据帧的列中标识文本字符串

Question

One column of my data frame has words and phrases. I am trying to create a dummy variable for those fields within this column that have specific strings of text anywhere within.

For example:

• kite
• cars
• box kites
• model cars
• i like kites that fly

• cars of the world

    myvector<-c("kite","cars","box kites","model cars","i like kites that fly", "cars of the world") 

I would want to identify all the fields with the string "kite"

I've tried a few things such as any() , which() and %in% but nothing has worked so far.

Any help greatly appreciated

Answer 1

You didn't provided any reproducible example. But your answer will be grepl.

grepl("kite", df$words)

It will return a logical vector if the word is in the row.

If you want to match multiple words use logical or | inside the string to match

grepl("kite|cars|box kites", df$words)