ManagersHalf table
Split season data for managers
data(ManagersHalf)
A data frame with 93 observations on the following 10 variables.
playerIDManager (player) ID code
yearIDYear
teamIDTeam; a factor
lgIDLeague; a factor with levels AL NL
inseasonManagerial order. One if the individual managed the team
the entire year. Otherwise denotes where the manager appeared
in the managerial order (1 for first manager, 2 for second, etc.).
A factor with levels 1 2 3 4 5
halfFirst or second half of season
GGames managed
WWins
LLosses
rankTeam's position in standings for the half
Lahman, S. (2022) Lahman's Baseball Database, 1871-2021, 2021 version, https://www.seanlahman.com/baseball-archive/statistics/
library("dplyr")
library("reshape2")
# Only have data for 1892 and 1981
# League rank by half for 1981 teams with the same
# manager in both halves who were hired in-season
ManagersHalf %>%
filter(yearID >= 1901) %>%
group_by(teamID, yearID) %>%
filter(all(playerID == playerID[1])) %>% # same manager in both halves
mutate(winPct = round(W/G, 3)) %>%
reshape2::dcast(playerID + yearID + teamID + lgID ~ half,
value.var = "rank") %>%
rename(rank1 = `1`, rank2 = `2`)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.