pulling element in column to make a dataframe

General
1

Hello, I'm new to R. I can't seem to pull elements in a column to make a counted data frame how many times the element appeared. Can someone help?

For instance:
I have two columns: timestamp and reaction.
In the reaction column, I have "LIKE","LOVE","HAHA","SORRY", and "ANGER".
I want to have all these counted and then set into a data frame with their perspective counts.

2

I think the function count from the dplyr package is what you are looking for. The code below (where d is your data.frame) will calculate the counts of each combinaiton of reaction and timestamp.

library(dplyr)
count(d, timestamp, reaction)
3

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