Finding frequency of observations in R

0 votes

I have a dataframe in R that includes a column for "fruit name" and whether the fruit is "available" or not, with the value '1' for the fruit being available and the value '0' if the fruit is not available:

Fruit    Available
Apple       0
Apple       1
Apple       1
Banana      1
Banana      0
Pear        1
Pear        0
Guava       0

I want to find the frequency of all these fruits and also find the number of times the fruit was "available" i.e. for the above table, i want the output to be like this:

Fruit    frequency    Total_Availability
Apple         3            2
Banana        2            1
Pear          2            1
Guava         1            0

Mar 26, 2018 in Data Analytics by coldcode
• 2,080 points
4,601 views

1 answer to this question.

0 votes

You can use the "dplyr" package to find the solution:

library(dplyr)
df %>% 
    group_by(Fruit) %>% 
    mutate(frequency = n(), Total_Availability = sum(Availability)) %>% 
    select(Fruit, frequency, Total_Availability) %>% 
    distinct()

print(df)
answered Mar 26, 2018 by Bharani
• 4,660 points

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