By most accounts, Carmelo Anthony was a better, more dedicated passer last season. Knicks fans saw it. Teammates praised him for it. Yet Anthony’s assist average, 2.6 per game, was the lowest of his career. Clearly, there was a piece missing in this equation.

The N.B.A. is about to provide that piece, and thousands of others, to all 30 teams — and, perhaps soon after, to all fans.

The league on Thursday announced plans to install sophisticated tracking cameras, known as the SportVu system, in every arena for the coming season, creating an unprecedented treasure trove of data about virtually every wrinkle of the game.

SportVu, developed by Stats LLC, records data points for all 10 players, the three referees and the ball, every 30th of a second, measuring speed, distance, player separation and ball possession. Every step, every dribble, every pass, every shot, every rebound — really, every movement — will be recorded, coded and categorized.