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app.R
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app.R
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source('scripts/helpers.R')
library(shiny)
library(shinythemes)
# get teams and logos
teams <- nflfastR::teams_colors_logos %>%
filter(!team_abbr %in% c("LAR", "SD", "STL", "OAK"))
# team abbreviations for dropdown menus
ids <- teams %>%
pull(team_abbr)
#####################################################################################
######## Define UI for viewer app ###########################################
#####################################################################################
ui <- function(request) {
fluidPage(
theme = shinytheme("cerulean"),
# theme = shinytheme("sandstone"),
# shinythemes::themeSelector(),
# App title ----
titlePanel("Fourth Down Decision Calculator"),
# Main panel for displaying outputs ----
mainPanel(
navbarPage("rbsdm.com/stats",
tabPanel("Result",
fluidRow(
column(12, align = "center",
bookmarkButton()
)),
fluidRow(
column(4, align = "center",
tags$h3("Game"),
selectInput(
inputId = "season",
label = "Season:",
choices = 2014:2023,
selected = 2020
),
radioButtons("type",
label = "Type:",
choices = list("Regular" = "reg","Postseason" = "post"),
selected = "reg"),
selectInput("posteam",
"Offense:",
c(sort(unique(as.character(ids)))), selected = "TB"),
selectInput("away",
"Away team:",
c(sort(unique(as.character(ids)))), selected = "TB"),
selectInput("home",
"Home team:",
c(sort(unique(as.character(ids)))), selected = "CHI"),
radioButtons("home_ko",
label = "Did home team get opening kickoff?:",
choices = list("0" = 0, "1" = 1),
inline = T,
selected = "0")
),
column(4, align = "center",
tags$h3("Time"),
radioButtons("qtr",
label = "Quarter:",
choices = list("1" = 1, "2" = 2, "3" = 3, "4" = 4),
inline = T,
selected = "4"),
sliderInput(
inputId = "mins",
label = "Minutes left in quarter:",
min = 0, max = 15,
value = 4
),
sliderInput(
inputId = "secs",
label = "Seconds left in quarter:",
min = 0, max = 59,
value = 52
),
radioButtons("posteam_to",
label = "Offense timeouts:",
choices = list("0" = 0, "1" = 1, "2" = 2, "3" = 3),
inline = T,
selected = "3"),
radioButtons("defteam_to",
label = "Defense timeouts:",
choices = list("0" = 0, "1" = 1, "2" = 2, "3" = 3),
inline = T,
selected = "3"),
),
column(4, align = "center",
tags$h3("Situation"),
sliderInput(
inputId = "ydstogo",
label = "Yards to go:",
min = 1, max = 30,
value = 1
),
sliderInput(
inputId = "yardline",
label = "Yards from opponent EZ:",
min = 1, max = 90,
value = 7
),
sliderInput(
inputId = "score_diff",
label = "Score differential:",
min = -28, max = 28,
value = -1
),
sliderInput(
inputId = "runoff",
label = "Advanced: additional seconds to run off clock after successful conversion",
min = 0, max = 40,
value = 0
)
)
),
fluidRow(
column(12, align = "center",
actionButton("update", "Update", width = '50%')
)),
############ start panel
tabsetPanel(type = "tabs", id = "inTabset",
tabPanel("4th down",
fluidRow(
column(12, align = "center",
tags$br(),
tags$br(),
htmlOutput("picture"),
htmlOutput("some_text")
)
),
fluidRow(
column(12, align="center",
gt_output(outputId = "view1") %>%
shinycssloaders::withSpinner(type = 6,# types see https://projects.lukehaas.me/css-loaders/
color = "#414141",
color.background = "#FFFFFF")
)
),
tags$br(),
tags$p("Notes: these are ESTIMATES; please use accordingly. On 4th and 1, the model cannot know whether it's a long 1 or a short 1. Shorter distance would favor going. Do not use this in overtime. Use with EXTREME CAUTION in the final minute of a game as the model is not good with end of game clock scenarios.")
### end panel
),
tabPanel("2 point conversions", value = "two_pt",
fluidRow(
column(12, align = "center",
tags$br(),
tags$br(),
htmlOutput("picture2"),
htmlOutput("some_text2")
)
),
fluidRow(
column(12, align="center",
gt_output(outputId = "view2") %>%
shinycssloaders::withSpinner(type = 6,# types see https://projects.lukehaas.me/css-loaders/
color = "#414141",
color.background = "#FFFFFF")
)
)
)
)
),
tabPanel("About",
p("Notes: Data from @nflfastR. A thank you to Lee Sharpe (@LeeSharpeNFL) for hosting an updating source for game results and to Thomas Mock (@thomas_mock) for code to make the table look better. Website by Ben Baldwin (@benbbaldwin). Model writeup coming at some point...")
)
)
)
)
}
#####################################################################################
######## Define server app ###########################################
#####################################################################################
server <- function(session, input, output) {
# Return the requested dataset ----
# Note that we use eventReactive() here, which depends on
# input$update (the action button), so that the output is only
# updated when the user clicks the button
# uncomment only for testing
# input <- NULL
# input$qtr <- 4
# input$mins <- 4
# input$secs <- 52
# input$posteam <- "TB"
# input$away <- "TB"
# input$home <- "CHI"
# input$yardline <- 7
# input$ydstogo <- 1
# input$posteam_to <- 3
# input$defteam_to <- 3
# input$home_ko <- 0
# input$score_diff <- -1
# input$type <- "reg"
# input$runoff <- 0
# input$season <- 2020
# get the situation from user input
fullInput <- eventReactive(
input$update,
{
tibble::tibble(
"type" = as.character(input$type),
"qtr" = as.integer(input$qtr),
"quarter_seconds_remaining" = 60 * as.integer(input$mins) + as.integer(input$secs),
'posteam' = as.character(input$posteam),
'away_team' = as.character(input$away),
'home_team' = as.character(input$home),
'yardline_100' = as.integer(input$yardline),
'ydstogo' = as.integer(input$ydstogo),
'posteam_timeouts_remaining' = as.integer(input$posteam_to),
'defteam_timeouts_remaining' = as.integer(input$defteam_to),
'home_opening_kickoff' = as.integer(input$home_ko),
'score_differential' = as.integer(input$score_diff),
'runoff' = as.integer(input$runoff),
'season' = as.integer(input$season)
)
} , ignoreNULL = FALSE
)
# get the data that goes in the table
tableData <- eventReactive(
input$update,
{
fullInput() %>%
nfl4th::add_4th_probs() %>%
nfl4th::make_table_data()
} , ignoreNULL = FALSE
)
# make the table
output$view1 <- render_gt(
expr = make_table(tableData(), fullInput())
)
# get the data that goes in the 2pt table
tableData2 <- eventReactive(
input$update,
{
fullInput() %>%
nfl4th::add_2pt_probs() %>%
nfl4th::make_2pt_table_data()
} , ignoreNULL = FALSE
)
# make the 2pt table
output$view2 <- render_gt(
expr = make_table_2pt(tableData2(), fullInput())
)
# for the team logo above decision
output$picture <-
renderText({
c(
'<img width="150" src="',
glue::glue("{teams %>% filter(team_abbr == input$posteam) %>% pull(team_logo_espn)}"),
'">'
)
})
output$picture2 <-
renderText({
c(
'<img width="150" src="',
glue::glue("{teams %>% filter(team_abbr == input$posteam) %>% pull(team_logo_espn)}"),
'">'
)
})
# say what the right decision is
output$some_text <- renderText({
return(glue::glue("<font size='+2'><span style='color:red'>{tableData() %>% arrange(-choice_prob) %>% dplyr::slice(1) %>% pull(choice)}</span> (+
<span style='color:green'> <strong> {round(tableData() %>% arrange(-choice_prob) %>% dplyr::slice(1) %>% pull(choice_prob) - tableData() %>% arrange(-choice_prob) %>% dplyr::slice(2) %>% pull(choice_prob), 1)}% WP</strong></span>)</font>"))
})
output$some_text2 <- renderText({
return(glue::glue("<font size='+2'><span style='color:red'>{tableData2() %>% arrange(-choice_prob) %>% dplyr::slice(1) %>% pull(choice)}</span> (+
<span style='color:green'> <strong> {round(tableData2() %>% arrange(-choice_prob) %>% dplyr::slice(1) %>% pull(choice_prob) - tableData2() %>% arrange(-choice_prob) %>% dplyr::slice(2) %>% pull(choice_prob), 1)}% WP</strong></span>)</font>"))
})
observe({
query <- parseQueryString(session$clientData$url_search)
query1 <- paste(names(query), query, sep = "=", collapse=", ")
# print(query1)
# print(substr(query1, (nchar(query1) - 4), (nchar(query1))))
if(substr(query1, (nchar(query1) - 4), (nchar(query1))) == "2pt=1"){
updateTabsetPanel(session, "inTabset", selected = "two_pt")
}
})
}
# Create Shiny app ----
shinyApp(ui, server, enableBookmarking = "url")