Count a list of specific strings in an R data frame

Question

I have a data frame with 5 columns, but I am interested in one column "Conditions". Within conditions column, I need to find a way to count the number of specific entries in a cell. Each column cell can have one entry or more than one entry separated by (, ) . So my data frame looks something like

S.NO                   Conditions
11            Eye Color 
12            Sound of your voice
13            Certain disease,Size of a palm,Eye Color
16            Eye Color,Hair color
17            Hair color,Height
18            Sound of your voice,Height

I want to count all the differnt entries/string at once. Total I have 35 list of different string in Conditions column and I want my Output something like this.

OUTPUT

Eye color   Sound of your voice   Certain disease    Size of a palm    Hair color   Height
    3           2                      1                   1              2          2

Answer 1

Since i do not know the exact structure of the data, i assumed the data to be as below

data

data <- tribble(
~Conditions, ~value,
'Eye color', '3',
'Sound of your voice', '2',
'Certain disease, Size of a palm, Eye color', '1,1,2',
'Eye color, Hair color', '2,2',
'Hair color, Height', '3,1',
'Sound of your voice, Height', '1,4'
)

for the above data we can write the below code to get the expected result

code

library(tidyverse)

Conditions <- unlist(strsplit(data$Conditions,','))
value <- unlist(strsplit(data$value,','))


df <- bind_cols(Conditions,value) %>% mutate(Conditions=trimws(`...1`)) %>% 
arrange(Conditions) %>% group_by(Conditions) %>% mutate(row=row_number()) %>% 
pivot_wider(row,names_from = Conditions, values_from = `...2`)

output