statcast

Documentation

Index

• type Dataset
  • func FromCsv(r io.Reader) (ds Dataset, err error)
  • func FromHttp(d0 time.Time, d1 time.Time) (ds Dataset, err error)
  • func (ds *Dataset) Append(nds Dataset)
• type Pitch

Types

type Dataset

type Dataset struct {
	Pitches   []Pitch
	DateBegin time.Time
	DateEnd   time.Time
}

Dataset ccontains a slice of pitches as well as the min and max date contained within the pitch slice

func FromCsv

func FromCsv(r io.Reader) (ds Dataset, err error)

FromCsv parses a local csv and returns a Statcast dataset

func FromHttp

func FromHttp(d0 time.Time, d1 time.Time) (ds Dataset, err error)

FromHttp downloads and parses a Statcast dataset spanning the states d0 and d1

func (*Dataset) Append

func (ds *Dataset) Append(nds Dataset)

Append combines two statcast datasets into a single struct

type Pitch

type Pitch struct {
	PitchType                    string    `csv:"pitch_type"`
	RawGameDate                  string    `csv:"game_date"`
	GameDate                     time.Time `csv:"-"`
	ReleaseSpeed                 float64   `csv:"release_speed"`
	ReleasePosX                  float64   `csv:"release_pos_x"`
	ReleasePosZ                  float64   `csv:"release_pos_z"`
	ReleasePosY                  float64   `csv:"release_pos_y"`
	PlayerName                   string    `csv:"player_name"`
	Batter                       int       `csv:"batter"`
	Pitcher                      int       `csv:"pitcher"`
	Events                       string    `csv:"events"`
	Description                  string    `csv:"description"`
	Zone                         int       `csv:"zone"`
	Des                          string    `csv:"des"`
	GameType                     string    `csv:"game_type"`
	Stand                        string    `csv:"stand"`
	PThrows                      string    `csv:"p_throws"`
	HomeTeam                     string    `csv:"home_team"`
	AwayTeam                     string    `csv:"away_team"`
	Type                         string    `csv:"type"`
	HitLocation                  int       `csv:"hit_location"`
	BbType                       string    `csv:"bb_type"`
	Balls                        int       `csv:"balls"`
	Strikes                      int       `csv:"strikes"`
	GameYear                     int       `csv:"game_year"` // Might need to change this to datetime obj
	PfxX                         float64   `csv:"pfx_x"`
	PfxZ                         float64   `csv:"pfx_z"`
	PlateX                       float64   `csv:"plate_x"`
	PlateZ                       float64   `csv:"plate_z"`
	On3B                         int       `csv:"on_3b"`
	On2B                         int       `csv:"on_2b"`
	On1B                         int       `csv:"on_1b"`
	OutsWhenUp                   int       `csv:"outs_when_up"`
	Inning                       int       `csv:"inning"`
	InningTopbot                 string    `csv:"inning_topbot"`
	HcX                          float64   `csv:"hc_x"`
	HcY                          float64   `csv:"hc_y"`
	Umpire                       int       `csv:"umpire"`
	Vx0                          float64   `csv:"vx0"`
	Vy0                          float64   `csv:"vy0"`
	Vz0                          float64   `csv:"vz0"`
	Ax                           float64   `csv:"ax"`
	Ay                           float64   `csv:"ay"`
	Az                           float64   `csv:"az"`
	SzTop                        float64   `csv:"sz_top"`
	SzBot                        float64   `csv:"sz_bot"`
	HitDistanceSc                int       `csv:"hit_distance_sc"`
	LaunchSpeed                  float64   `csv:"launch_speed"`
	LaunchAngle                  float64   `csv:"launch_angle"`
	EffectiveSpeed               float64   `csv:"effective_speed"`
	ReleaseSpinRate              int       `csv:"release_spin_rate"`
	ReleaseExtension             float64   `csv:"release_extension"`
	GamePk                       int       `csv:"game_pk"`
	Pitcher1                     int       `csv:"pitcher.1"`
	Fielder2                     int       `csv:"fielder_2"`
	Fielder3                     int       `csv:"fielder_3"`
	Fielder4                     int       `csv:"fielder_4"`
	Fielder5                     int       `csv:"fielder_5"`
	Fielder6                     int       `csv:"fielder_6"`
	Fielder7                     int       `csv:"fielder_7"`
	Fielder8                     int       `csv:"fielder_8"`
	Fielder9                     int       `csv:"fielder_9"`
	EstimatedBaUsingSpeedangle   float64   `csv:"estimated_ba_using_speedangle"`
	EstimatedWobaUsingSpeedangle float64   `csv:"estimated_woba_using_speedangle"`
	WobaValue                    float64   `csv:"woba_value"`
	WobaDenom                    float64   `csv:"woba_denom"`
	BabipValue                   float64   `csv:"babip_value"`
	IsoValue                     float64   `csv:"iso_value"`
	LaunchSpeedAngle             int       `csv:"launch_speed_angle"`
	AtBatNumber                  int       `csv:"at_bat_number"`
	PitchNumber                  int       `csv:"pitch_number"`
	PitchName                    string    `csv:"pitch_name"`
	HomeScore                    int       `csv:"home_score"`
	AwayScore                    int       `csv:"away_score"`
	BatScore                     int       `csv:"bat_score"`
	FldScore                     int       `csv:"fld_score"`
	PostAwayScore                int       `csv:"post_away_score"`
	PostHomeScore                int       `csv:"post_home_score"`
	PostBatScore                 int       `csv:"post_bat_score"`
	PostFldScore                 int       `csv:"post_fld_score"`
	IfFieldingAlignment          string    `csv:"if_fielding_alignment"`
	OfFieldingAlignment          string    `csv:"of_fielding_alignment"`
	SpinAxis                     int       `csv:"spin_axis"`
	DeltaHomeWinExp              float64   `csv:"delta_home_win_exp"`
	DeltaRunExp                  float64   `csv:"delta_run_exp"`
}

Pitch is the struct representation of a single pitch recorded by MLB's statcast system