Functions and data frames
A data frame is a table of columns, and functions let you reuse transformations.
What you will be able to do
- Define functions with function(args) { }.
- Read CSV data with read.csv().
- Summarise with summary() and head().
In plain English
A data frame is a table of columns, and functions let you reuse transformations.
- Define functions with function(args) { }.
- Read CSV data with read.csv().
- Summarise with summary() and head().
lessons <- data.frame(course = c("HTML", "CSS"), minutes = c(12, 18))
long <- function(df) df[df$minutes >= 15, ]
print(long(lessons))Your turn
EasyExplain it back
Answer from memory: Which structure stores a table of typed columns?
TEXT · starter
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Knowledge checkQuestion 1
Which structure stores a table of typed columns?
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