Representing & manipulating data
M Hallett
21/07/2020
Outline for today
- Our goal is to cover some very fundamental concepts underlying how data is represented and manipulated in R.
- Lecture 04 will be carried out directly in RStudio Cloud.
- This suites the material and also gives me a chance to show you some tricks with RStudio.
- The code and data I use today in in the examples and data folders in RStudio project L04.
- We don’t cover all the basics of programming here. Just a few key concepts.
Action Items
- Solve the swap problem discussed in the lecture.
Points of Reflection
- Why do you think the notion of data has a specific class is important?
- You have operators (+,−,∗,/) and operands, the objects that the operators are applied to; eg in the equation x+y, x and y are operands.
- Does every operator work on every class of data?
- Notice that we used the + operator when building the layers of the ggplot objects.
- What are the operands here and what class do they have?
BIOL480
© M Hallett, 2022 Western University
1
Representing & manipulating data
M Hallett
21/07/2020
