fourfactors {BasketballAnalyzeR}

Calculates possessions, pace, offensive and defensive rating, and Four Factors

Description

Calculates possessions, pace, offensive and defensive rating, and Four Factors

Usage

fourfactors(TEAM, OPP)

Arguments

TEAM

a data frame whose rows are the analyzed teams and with columns referred to the team achievements in the considered games (a box score); required variables: Team, P2A, P2M, P3A, P3M, FTA, FTM, OREB, DREB, TOV, MIN (see Details).

OPP

a data frame whose rows are the analyzed teams and with columns referred to the achievements of the opponents of each team in the considered game; required variables: Team, P2A, P2M, P3A, P3M, FTA, FTM, OREB, DREB, TOV, MIN (see Details).

Details

The rows of the TEAM and the OPP data frames must be referred to the same teams in the same order.

Required columms:

• Team, a factor with the name of the analyzed team

• P2A, a numeric variable (integer) with the number of 2-points shots attempted

• P2M, a numeric variable (integer) with the number of 2-points shots made

• P3A, a numeric variable (integer) with the number of 3-points shots attempted

• P3M, a numeric variable (integer) with the number of 3-points shots made

• FTA, a numeric variable (integer) with the number of free throws attempted

• FTM, a numeric variable (integer) with the number of free throws made

• OREB, a numeric variable (integer) with the number of offensive rebounds

• DREB, a numeric variable (integer) with the number of defensive rebounds

• TOV, a numeric variable (integer) with the number of turnovers

• MIN, a numeric variable (integer) with the number of minutes played

Value

An object of class fourfactors, i.e. a data frame with the following columns:

• Team, a factor with the name of the analyzed team

• POSS.Off, a numeric variable with the number of possessions of each team calculated with the formula POSS=(P2A+P3A)+0.44*FTA-OREB+TOV

• POSS.Def, a numeric variable with the number of possessions of the opponents of each team calculated with the formula POSS=(P2A+P3A)+0.44*FTA-OREB+TOV

• PACE.Off, a numeric variable with the pace of each team (number of possessions per minute played)

• PACE.Def, a numeric variable with the pace of the opponents of each team (number of possessions per minute played)

• ORtg, a numeric variable with the offensive rating (the points scored by each team per 100 possessions)

• DRtg, a numeric variable with the defensive rating (the points scored by the opponents of each team per 100 possessions)

• F1.Off, a numeric variable with the offensive first factor (effective field goal percentage)

• F2.Off, a numeric variable with the offensive second factor (turnovers per possession)

• F3.Off, a numeric variable with the offensive third factor (rebouding percentage)

• F4.Off, a numeric variable with the offensive fourth factor (free throw rate)

• F1.Def, a numeric variable with the defensive first factor (effective field goal percentage)

• F2.Def, a numeric variable with the defensive second factor (turnovers per possession)

• F3.Def, a numeric variable with the defensive third factor (rebouding percentage)

• F4.Def, a numeric variable with the defensive fourth factor (free throw rate)

Author(s)

Marco Sandri, Paola Zuccolotto, Marica Manisera ([e-mail])

References

P. Zuccolotto and M. Manisera (2020) Basketball Data Science: With Applications in R. CRC Press.

See Also

plot.fourfactors

Examples

selTeams <- c(2,6,10,11)
FF <- fourfactors(Tbox[selTeams,], Obox[selTeams,])
plot(FF)