Search for multiple values in a column in R

Question

I have a data frame with two columns:

df = data.frame(animals = c(\"cat; dog; bird\", \"dog; bird\", \"bird\"), sentences = c(\"the cat is brown; the dog is bar         


        

Answer 1

A map() way to manipulate each animal piece in the first column.

library(tidyverse)
string <- unlist(str_split(df$sentences, ";"))

df %>% rowwise %>%
  mutate(SUM = str_split(animals, "; ", simplify = T) %>%
    map( ~ str_count(string, .)) %>%
    unlist %>% sum)

#   animals        sentences                                           SUM
#                                                            
# 1 cat; dog; bird the cat is brown; the dog is barking; the bird...   6
# 2 dog; bird      the dog is black; the bird is yellow and blue       5
# 3 bird           the bird is blue                                    3