Adding a row
Just like every action has a reaction, every cbind()
has an rbind()
. (We admit, we are pretty bad with metaphors.)
Your R workspace, where all variables you defined 'live' (check out what a workspace is), has already been initialized and contains two matrices:
star_wars_matrix
that we have used all along, with data on the original trilogy,star_wars_matrix2
, with similar data for the prequels trilogy.
Explore these matrices in the console if you want to have a closer look. If you want to check out the contents of the workspace, you can type ls()
in the console.
This exercise is part of the course
Introduction to R
Exercise instructions
Use rbind()
to paste together star_wars_matrix
and star_wars_matrix2
, in this order. Assign the resulting matrix to all_wars_matrix
.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# star_wars_matrix and star_wars_matrix2 are available in your workspace
star_wars_matrix
star_wars_matrix2
# Combine both Star Wars trilogies in one matrix
all_wars_matrix <-