Counting the occurrences of Favia

Exercise Type: Implementation

favia_favus

Favia favus

Instructions

Calculate the number of occurrences and collections of the genus Favia in this old excerpt from the Paleobiology Database.

  1. Download the occurrence file: favia.csv

  2. Read it into R with read.csv()!

  3. Calculate how many occurrences (rows in the table) the genus has where the stg (stage) column’s value is 87! This indicates Priabonian (Eocene) stage. This should be a single numeric value.

  4. Calculate how many different collections (entries in the collection_no column) there are in this stage! This should be a single numeric value.

  5. Calculate which stg numbers does this genus occur in! This should be a numeric vector.

  6. Calculate the number of occurrences and collections in every stage! These should be two numeric vectors.

Hint: initially, use a for loop to do this - although we will solve this in more functional way too!