Vectors and data frames

This deck shows you on the game with three doors how R holds data in vectors and tables, and afterwards you can:

• explain why a vector holds values of one type only and how R converts when types are mixed
• recognise the types double, integer, character and logical with typeof()
• compare two vectors position by position and count and compute shares with sum() and mean() of a logical vector
• pick values of a vector with [ ] by position and by a condition
• describe a data frame as a list of equally long vectors and read data as a tibble with read_csv() and look at it with glimpse()