※参考＜統計ソフトRに入力するコマンド＞
統計ソフトRのインストール手順をまとめた記事も作成していますので、よろしければご参考ください。
library(BasketballAnalyzeR)
library(gridExtra)
Tbox9798 <- read.csv(file="Tbox_9798.csv")
Obox9798 <- read.csv(file="Obox_9798.csv")
Tadd9798 <- read.csv(file="Tadd_9798.csv")
Pbox9798 <- read.csv(file="Pbox_9798.csv")
#dts.PbP.9798 <- read.csv(file="PbP_9798.csv")
#PbP9798 <- PbPmanipulation(dts.PbP.9798)
# Possessions, PACE, Offensive/Defensive Ratings, Four Factors
fourfactors9798 <- fourfactors(Tbox9798, Obox9798)
Playoff <- Tadd9798$Playoff
fourfactors9798PO <- data.frame(fourfactors9798, Playoff)
fourfactors9798PO
# Scatter plot of PACE, Offensive/Defensive Ratings, Four Factors
ggplot(data=fourfactors9798PO, aes(x=PACE.Off, y=PACE.Def, color = Playoff, label=Team)) +
geom_point() +
ggrepel::geom_text_repel(aes(label = Team))+
geom_vline(xintercept =mean(fourfactors9798PO$PACE.Off))+
geom_hline(yintercept =mean(fourfactors9798PO$PACE.Def))+
labs(title = "PACE - NBA teams (NBA 1997 - 1998 Regular Season)")+
labs(x = "Pace (Possessions per minute) of the Team") +
labs(y = "Pace (Possessions per minute) of the Opponents")
ggplot(data=fourfactors9798PO, aes(x=ORtg, y=DRtg, color = Playoff, label=Team)) +
geom_point() +
ggrepel::geom_text_repel(aes(label = Team))+
geom_vline(xintercept =mean(fourfactors9798PO$ORtg))+
geom_hline(yintercept =mean(fourfactors9798PO$DRtg))+
labs(title = "ORtg and DRtg - NBA teams (NBA 1997 - 1998 Regular Season)")+
labs(x = "Offensive Rating of the Team (ORtg)") +
labs(y = "Offensive Rating of the Opponents (DRtg)")
ggplot(data=fourfactors9798PO, aes(x=F1.Off, y=F1.Def, color = Playoff, label=Team)) +
geom_point() +
ggrepel::geom_text_repel(aes(label = Team))+
geom_vline(xintercept =mean(fourfactors9798PO$F1.Off))+
geom_hline(yintercept =mean(fourfactors9798PO$F1.Def))+
labs(title = "Factor 1: eFG% - NBA teams (NBA 1997 - 1998 Regular Season)")+
labs(x = "eFG% (Offense)") +
labs(y = "eFG% (Defense)")
ggplot(data=fourfactors9798PO, aes(x=F2.Off, y=F2.Def, color = Playoff, label=Team)) +
geom_point() +
ggrepel::geom_text_repel(aes(label = Team))+
geom_vline(xintercept =mean(fourfactors9798PO$F2.Off))+
geom_hline(yintercept =mean(fourfactors9798PO$F2.Def))+
labs(title = "Factor 2: TO Ratio - NBA teams (NBA 1997 - 1998 Regular Season)")+
labs(x = "TO Ratio (Offense)") +
labs(y = "TO Ratio (Defense)")
ggplot(data=fourfactors9798PO, aes(x=F3.Off, y=F3.Def, color = Playoff, label=Team)) +
geom_point() +
ggrepel::geom_text_repel(aes(label = Team))+
geom_vline(xintercept =mean(fourfactors9798PO$F3.Off))+
geom_hline(yintercept =mean(fourfactors9798PO$F3.Def))+
labs(title = "Factor 3: REB% - NBA teams (NBA 1997 - 1998 Regular Season)")+
labs(x = "REB% (Offense)") +
labs(y = "REB% (Defense)")
ggplot(data=fourfactors9798PO, aes(x=F4.Off, y=F4.Def, color = Playoff, label=Team)) +
geom_point() +
ggrepel::geom_text_repel(aes(label = Team))+
geom_vline(xintercept =mean(fourfactors9798PO$F4.Off))+
geom_hline(yintercept =mean(fourfactors9798PO$F4.Def))+
labs(title = "Factor 4: FT Rate - NBA teams (NBA 1997 - 1998 Regular Season)")+
labs(x = "FT Rate (Offense)") +
labs(y = "FT Rate (Defense)")
# Correlation matrix
data9798c <- subset(Pbox9798, MIN>=500)
attach(data9798c)
X <- data.frame(P2M, P3M, FTM, REB=(OREB+DREB), AST, STL, BLK, TOV)/MIN
detach(data9798c)
corrmatrix <- corranalysis(X[,1:8], threshold=0.4)
plot(corrmatrix)
attach(fourfactors9798)
Y <- data.frame(PACE.Off, ORtg, eFGp.Off=F1.Off, TOR.Off=F2.Off, REBp.Off=F3.Off, FTR.Off=F4.Off, PACE.Def, DRtg, eFGp.Def=F1.Def, TOR.Def=F2.Def, REBp.Def=F3.Def, FTR.Def=F4.Def)
detach(fourfactors9798)
corrmatrixY <- corranalysis(Y[,1:12], threshold=0.4)
plot(corrmatrixY)
# Bubble plot of NBA teams
attach(Tbox9798)
X2 <- data.frame(T=Team, P2p, P3p, FTp, AS=P2A+P3A+FTA)
detach(Tbox9798)
labs1 <- c("2-point shots (% made)", "3-point shots (% made)", "free throws (% made)", "Total shots attempted")
bubbleplot(X2, id="T", x="P2p", y="P3p", col="FTp", size="AS", labels=labs1, title="Bubble plot of NBA teams: Shooting percentage and shots attempted (NBA 1997 - 1998 Regular season)", text.size=3.5)
attach(Tbox9798)
Y2 <- data.frame(T=Team, DREB=DREB/GP, STL=STL/GP, BLK=BLK/GP, PM=PM/GP)
detach(Tbox9798)
labs2 <- c("Defensive Rebounds per Game", "Blocks per Game", "Plus-Minus per Game", "Steals per Game")
bubbleplot(Y2, id="T", x="DREB", y="BLK", col="PM", size="STL", labels=labs2, title="Bubble plot of NBA teams: Defensive stats and Plus-Minus (NBA 1997 - 1998 Regular season)", text.size=3.5)
# Radar chart of NBA teams
attach(Tbox9798)
T <- data.frame(P2M,P3M, FTM, REB=OREB+DREB, AST, STL, BLK)/MIN
detach(Tbox9798)
radialprofile(data=T, title=Tbox9798$Team, std=TRUE)
listplots <- radialprofile(data=T, title=Tbox9798$Team, std=TRUE)
grid.arrange(grobs=listplots[1:15], ncol=5)
grid.arrange(grobs=listplots[16:30], ncol=5)
# Non-hierarchical clustering - K-means
FF9798 <- fourfactors(Tbox9798, Obox9798)
OD.Rtg <- FF9798$ORtg/FF9798$DRtg
F1.r <- FF9798$F1.Off/FF9798$F1.Def
F2.r <- FF9798$F2.Def/FF9798$F2.Off
F3.Off <- FF9798$F3.Off
F3.Def <- FF9798$F3.Def
P3M <- Tbox9798$P3M
STL.r <- Tbox9798$STL/Obox9798$STL
data9798k <- data.frame(OD.Rtg, F1.r, F2.r, F3.Off, F3.Def, P3M, STL.r)
set.seed(29)
kclu1 <- kclustering(data9798k)
plot(kclu1)
set.seed(29)
kclu2 <- kclustering(data9798k, labels=Tbox9798$Team, k=5)
plot(kclu2)
kclu2
kclu2.PO <- table(kclu2$Subjects$Cluster, Tadd9798$Playoff)
kclu2.W <- tapply(Tbox9798$W, kclu2$Subjects$Cluster, mean)
Xbar <- data.frame(cluster=c(1:5), No=kclu2.PO[,1], Yes=kclu2.PO[,2], W=kclu2.W)
barline(data=Xbar, id="cluster", bars=c("Yes", "No"), labels.bars=c("Playoff: YES", "Playoff: NO"), line="W", label.line="average wins", decreasing=FALSE)
cluster <- as.factor(kclu2$Subjects$Cluster)
Xbubble <- data.frame(Team=Tbox9798$Team, PTS=Tbox9798$PTS, PTS.Opp=Obox9798$PTS, cluster, OD.Rtg=data9798k$OD.Rtg)
labs <- c("PTS", "PTS.Opp", "cluster", "OD.Rtg")
bubbleplot(Xbubble, id="Team", x="PTS", y="PTS.Opp", col="cluster", size="OD.Rtg", labels=labs, title="Bubble plot of NBA teams: PTS, Opponent PTS, Cluster and OD.Rtg (NBA 1997 - 1998 Regular season)", text.size=3.0)
remove(P3M)
# Gini index with respect to PTS and AST
no.teams <- nrow(Tbox9798)
GINI_PTS <- array(0, no.teams)
for (k in 1:no.teams) {
Teamk <- Tbox9798$Team[k]
Pbox9798.sel <- subset(Pbox9798, Team==Teamk)
index1 <- inequality(Pbox9798.sel$PTS, npl=8)
GINI_PTS[k] <- index1$Gini
}
GINI_AST <- array(0, no.teams)
for (k in 1:no.teams) {
Teamk <- Tbox9798$Team[k]
Pbox9798.sel <- subset(Pbox9798, Team==Teamk)
index2 <- inequality(Pbox9798.sel$AST, npl=6)
GINI_AST[k] <- index2$Gini
}
dts <- data.frame(Team=Tbox9798$Team, GINI_PTS, GINI_AST, PTS=Tbox9798$PTS, AST=Tbox9798$AST, Playoff=Tadd9798$Playoff)
ggplot(data=dts, aes(x=GINI_PTS, y=GINI_AST, color = Playoff, label=Tbox9798$Team)) +
geom_point() +
ggrepel::geom_text_repel(aes(label = Tbox9798$Team))+
geom_vline(xintercept =mean(dts$GINI_PTS))+
geom_hline(yintercept =mean(dts$GINI_AST))+
labs(title = "Scatter plot of NBA teams: Gini index for PTS and AST (NBA 1997 - 1998 Regular season)")+
labs(x = "GINI_PTS") +
labs(y = "GINI_AST")
# MDS Map of NBA Players
attach(Pbox9798)
data9798m <- data.frame(P2M, P3M, FTM, REB=(OREB+DREB), AST, STL, BLK)/MIN
detach(Pbox9798)
data9798m <- subset(data9798m, Pbox9798$MIN>=1500)
id <- Pbox9798$Player[Pbox9798$MIN>=1500]
mds <- MDSmap(data9798m)
selp <- which(id=="Shaquille O'Neal" | id=="Tracy Murray" | id=="Karl Malone" | id=="Dennis Rodman" | id=="Mark Jackson" | id=="Brevin Knight" | id=="Shawn Bradley")
plot(mds, labels=id, subset=selp, col.subset="tomato")
plot(mds, labels=id, subset=selp, col.subset="tomato", zoom=c(-2.5,2.5,-2,2))
plot(mds, z.var=c("P2M", "P3M", "FTM", "REB", "AST", "STL", "BLK"), contour=TRUE, palette=topo.colors)
# Hierarchical clustering - Ward
attach(Pbox9798)
data9798w <- data.frame(PTS, P2M, P3M, REB=(OREB+DREB), AST, TOV, STL, BLK)/MIN
detach(Pbox9798)
data9798w <- subset(data9798w, Pbox9798$MIN>=1800)
ID <- Pbox9798$Player[Pbox9798$MIN>=1800]
hclu1 <- hclustering(data9798w)
plot(hclu1)
hclu2 <- hclustering(data9798w, labels=ID, k=6)
plot(hclu2, profiles=TRUE)
plot(hclu2, rect=TRUE, colored.branches=TRUE, cex.labels=0.2)※データ分析を実践する際に参考にしている書籍『Basketball Data Science: With Applications in R』の紹介記事も書いていますので、よろしければ下記よりご確認ください。
