Topics

• data.table
• Getting started with shiny
• Getting started with data.table
• Adding and modifying columns
• Subsetting rows by group
• Why is my old code not working?

Examples

• Creating a data.table
• Setting keys in data.table
• Getting started and finding help
• Editing values
• Selecting rows within each group
• When would I use shiny?
• unique and duplicated no longer works on keyed data.table