Historical NBA Elo

This directory contains the data behind the Complete History Of The NBA interactive. Data updated periodically. Game information is from Basketball-Reference.com.

In the data file nbaallelo.csv are the following variables:

Header	Definition
`gameorder`	Play order of game in NBA history
`game_id`	Unique ID for each game
`lg_id`	Which league the game was played in
`_iscopy`	Each row of data is tied to a single team for a single game, so _iscopy flags if this game_id has already occured for the opposing team in the same matchup
`year_id`	Season id, named based on year in which the season ended
`date_game`	Game date
`is_playoffs`	Flag for playoff games
`team_id`	Three letter code for team name, from Basketball Reference
`fran_id`	Franchise id. Multiple team_ids can fall under the same fran_id due to name changes or moves. Interactive is grouped by fran_id.
`pts`	Points scored by team
`elo_i`	Team elo entering the game
`elo_n`	Team elo following the game
`win_equiv`	Equivalent number of wins in a 82-game season for a team of elo_n quality
`opp_id`	Team id of opponent
`opp_fran`	Franchise id of opponent
`opp_pts`	Points scored by opponent
`opp_elo_i`	Opponent elo entering the game
`opp_elo_n`	Opponent elo following the game
`game_location`	Home (H), away (A), or neutral (N)
`game_result`	Win or loss for team in the team_id column
`forecast`	Elo-based chances of winning for the team in the team_id column, based on elo ratings and game location
`notes`	Additional information