Sistema de Rastreamento de Coordenadas em Jogos

TRACKING OUTPUT Tracking data consists of xyz coordinates of players and ball at the frequency of 25 Frames per second ie the player locations are captured every 125 th of a second COORDINATE SYSTEM The coordinate system is a righthanded coordinate system with the origin 0 0 0 at the center of the pitch Xaxis running along the touch lines Yaxis running along the end lines Zaxis is vertical with positive values above the pitch units in meters FIELDS OVERVIEW Field Type Description Note periodid integer Period number 1 frameidx integer Frame index 2 gameclock float Time since the start of the period in seconds wallclock integer The number of milliseconds since January 1 1970 GMT 3 live boolean True if play is live lasttouchteamid integer ID of the last team to touch the ball during live play teamid integer Opta Team ID playerid integer Opta Player ID playernumber integer Player jersey number 4 speed float Instantaneous speed of the player meterssecond 4 x float x coorindate of Players Location 4 y float y coorindate of Players Location 4 z float z coorindate of Players Location 4 5 ballx float x coorindate of the balls Location 4 6 bally float y coorindate of the balls Location 4 6 ballz float z coorindate of the balls Location 4 6 ballspeed float Instantaneous speed of the ball meterssecond 4 6 Notes 1 1 for the first half 2 for the second half 3 and 4 for extra time halves and 5 for penalties 2 Frame indices start at 0 at the beginning of the match and increment until the end of the match 3 The timestamp will be provided by Second Spectrums system server which is synced to external world time via NTP 4 This is null when the live attribute of the TrackingMessage object is false with a 15 frame buffer so that valid coordinate values are present within 15 frames of live play 5 For players z height is always zero 6 If the ball is not visible in the tracking area this will be null