Version 0.0.3

Changes

• #7 episode_group(), fixed_episodes() and rolling_episodes() - optimized to take less time when working with large datasets
• episode_group(), fixed_episodes() and rolling_episodes() - date argument now supports numeric values
• compress_number_line() - the output (gid slot) is now a group identifier just like in epid objects (epid_interval)

Version 0.0.2

New feature

• pid S4 object class for results of record_group(). This will replace the current default (data.frame) in the next major release
• epid S4 object class for results of episode_group(), fixed_episodes() and rolling_episodes(). This will replace the current default (data.frame) in the next release
• to_s4() and to_s4 argument in record_group(), episode_group(), fixed_episodes() and rolling_episodes(). Changes their output from a data.frame (current default) to epid or pid objects
• to_df() changes epid or pid objects to a data.frame
• deduplicate argument from fixed_episodes() and rolling_episodes() added to episode_group()

Changes

• fixed_episodes() and rolling_episodes() are now wrapper functions of episode_group(). Functionality remains the same but now includes all arguments available to episode_group()
• Changed the output of fixed_episodes() and rolling_episodes() from number_line to data.frame, pending the change to epid objects
• pid_cri column returned in record_group is now numeric. 0 indicates no match.
• columns can now be used as criteria multiple times record_group()
• #6 number_line objects can now be used as a criteria in record_group()

Bug fixes

• #3 - Resolved a bug with episode_unit in episode_group()
• #4 - Resolved a bug with bi_direction in episode_group()

Version 0.0.1

Features

• fixed_episodes() and rolling_episodes() - Group records into fixed or rolling episodes of events or period of events.
• episode_group() - A more comprehensive implementation of fixed_episodes() and rolling_episodes(), with additional features such as user defined case assignment.
• record_group() - Multistage deterministic linkage that addresses missing data.
• number_line S4 object.
  • Used to represent a range of numeric values to match using record_group()
  • Used to represent a period in time to be grouped using fixed_episodes(), rolling_episodes() and episode_group()
  • Used as the returned output of fixed_episodes() and rolling_episodes()