Nothing
## ----setup, include = FALSE---------------------------------------------------
knitr::opts_chunk$set(
collapse = TRUE,
comment = "#>",
eval = FALSE
)
## -----------------------------------------------------------------------------
# library(baseballr)
# library(dplyr)
# library(ggplot2)
# library(reshape2)
# library(zoo)
## -----------------------------------------------------------------------------
# betts_id <- playerid_lookup("Betts") %>%
# dplyr::filter(first_name == "Mookie") %>%
# dplyr::select(mlbam_id, first_name, last_name)
## -----------------------------------------------------------------------------
# betts_15 <- statcast_search("2015-03-31", "2015-10-31", playerid = betts_id[1,1], player_type = 'batter')
# betts_16 <- statcast_search("2016-03-31", "2016-10-31", playerid = betts_id[1,1], player_type = 'batter')
# betts <- dplyr::bind_rows(betts_15, betts_16) %>%
# dplyr::mutate(Year = as.factor(substr(game_date,1,4))) %>%
# dplyr::filter(type == "X") %>%
# dplyr::filter(launch_speed != 0)
## -----------------------------------------------------------------------------
# betts_grpd <- betts %>%
# dplyr::group_by(game_date) %>%
# dplyr::summarise(
# `Average Launch Angle` = mean(launch_angle, na.rm = TRUE),
# `Average Batted Ball Speed` = mean(launch_speed, na.rm = TRUE)) %>%
# dplyr::ungroup() %>%
# melt(id=c("game_date")) %>%
# dplyr::mutate(Year = as.factor(substr(game_date,1,4)))
## -----------------------------------------------------------------------------
# betts_avg_speed_yr <- betts %>%
# dplyr::group_by(Year) %>%
# dplyr::summarise(
# speed = round(mean(launch_speed, na.rm = TRUE),1),
# angle = round(mean(launch_angle, na.rm = TRUE),1))
## -----------------------------------------------------------------------------
# betts_grpd %>%
# ggplot(aes(game_date, value)) +
# geom_point() +
# stat_smooth(aes(group = Year, color = Year)) +
# facet_wrap(~variable, scales = "free_y") +
# ggtitle("\nMookie Betts: 2015 vs. 2016\n") +
# labs(subtitle = paste0("Betts has lowered his launch angle in 2016, from ", betts_avg_speed_yr[1,3], " degrees in 2015 to ", betts_avg_speed_yr[2,3], " degrees this year.\n\n"),
# caption = "@BillPetti\nData from baseballsavant.mlb.com\nData acquired with the baseballr package") +
# ylab("Angle = Degrees, Speed = MPH\n") +
# xlab("\nDate") +
# #theme_bp_grey() +
# theme(legend.position = "bottom", strip.text.x = element_text(face = "bold", size = 14), plot.subtitle = element_text(hjust=-.12)) +
# scale_color_manual(values = c("#5F9ED1", "#FF800E"))
## ---- eval=FALSE--------------------------------------------------------------
# # ggsave("betts_angle_speed_year.png", scale = 1.2, width = 14, height = 8.5, units = "in")
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