106 lines
2.5 KiB
R
106 lines
2.5 KiB
R
# Packages
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library(shiny)
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library(shinythemes)
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library(dplyr)
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library(readr)
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library(sf)
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library(leaflet)
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pirate_attacks_sf_ss2 <-
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read_sf("data/geojson/pirate_attacks_sf_ss2.geojson")
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source("pirateIcon.R")
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# UI
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ui <- fluidPage(
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theme = shinytheme("lumen"),
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titlePanel("Attaques pirates contre des navires"),
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sidebarLayout(
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sidebarPanel(
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# Select type of vessel to plot
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selectInput(
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inputId = "vessel",
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label = strong("Vessel category"),
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choices = unique(pirate_attacks_sf_ss2$vessel_category),
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selected = "Bulk"
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),
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# Select date range to be plotted
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dateRangeInput(
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"date",
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strong("Date range"),
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start = min(pirate_attacks_sf_ss2$date),
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end = max(pirate_attacks_sf_ss2$date),
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min = min(pirate_attacks_sf_ss2$date),
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max = max(pirate_attacks_sf_ss2$date)
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),
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),
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mainPanel(
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leafletOutput("pirateMap"),
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p(),
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tags$a(
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href = "https://github.com/newzealandpaul/Maritime-Pirate-Attacks",
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"Crime at Sea: A Global Database of Maritime Pirate Attacks (1993 - 2020)",
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target = "_blank"
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)
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)
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)
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)
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# Server
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server <- function(input, output) {
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# Filter data
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pirate_attacks_sf_maps <- reactive({
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req(input$date)
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req(input$vessel)
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validate(need(
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!is.na(input$date[1]) &
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!is.na(input$date[2]),
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"Error: Please provide both a start and an end date."
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))
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validate(need(
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input$date[1] < input$date[2],
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"Error: Start date should be earlier than end date."
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))
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pirate_attacks_sf_ss2 %>%
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filter(
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vessel_category == input$vessel,
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as.POSIXct(date) > as.POSIXct(input$date[1]) &
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as.POSIXct(date) < as.POSIXct(input$date[2])
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)
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})
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output$pirateMap <- renderLeaflet({
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source("leaflet_pirate_popuptext.R")
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leaflet() %>%
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addTiles() %>%
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addMarkers(
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data = pirate_attacks_sf_maps(),
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popup = paste0(
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"Type: ",
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pirate_attacks_sf_maps()$vessel_category,
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"<br>",
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"Statut: ",
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pirate_attacks_sf_maps()$vessel_status,
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"<br>",
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"Type d'attaque: ",
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pirate_attacks_sf_maps()$attack_type,
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"<br>",
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"Distance de la côte: ",
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round(pirate_attacks_sf_maps()$shore_distance, 2),
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"km",
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"<br>",
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"Date: ",
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pirate_attacks_sf_maps()$date
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),
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icon = pirateIcon,
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clusterOptions = markerClusterOptions()
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)
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})
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}
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shinyApp(ui, server)
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