Explore an R corpus

One of your coworkers has prepared a corpus of 20 documents discussing crude oil, named crude. This is only a sample of several thousand articles you will receive next week. In order to get ready for running text analysis on these documents, you have decided to explore their content and metadata. Remember that in R, a VCorpus contains both meta and content regarding each text. In this lesson, you will explore these two objects.

This exercise is part of the course

Introduction to Natural Language Processing in R

View Course

Exercise instructions

  • Print out crude and review the output.
  • Print the content of the 10th article.
  • Print out the ID of the first article in crude.
  • Using the provided for loop, make a vector of the IDs from the corpus.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Print out the corpus
print(___)

# Print the content of the 10th article
crude[[___]]$___

# Find the first ID
crude[[___]]$___$id

# Make a vector of IDs
ids <- c()
for(i in c(1:20)){
  ids <- append(ids, crude[[___]]$___$id)
}