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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,32 +1,104 @@ | ||
| library(shiny) | ||
| library(leaflet) | ||
| library(yyjsonr) | ||
| library(sf) | ||
| library(leaflet.extras2) | ||
| options("shiny.autoreload" = TRUE) | ||
|
|
||
| cols <- c("green","orange","red","pink","yellow","blue","lightblue") | ||
| darkcols <- c("lightgray","gray","#c49071","#876302","#443408") | ||
|
|
||
| ## Custom GeoJSON ########### | ||
| ## Get a Sample Building Dataset from | ||
| # https://hub.arcgis.com/datasets/IthacaNY::buildings/explore?location=42.432557%2C-76.486649%2C13.42 | ||
| geojson <- yyjsonr::read_geojson_file("Buildings_mini.geojson") | ||
| geojson$height= sample(seq(50,100,5), nrow(geojson), replace = TRUE) | ||
| geojson$color= sample(cols, nrow(geojson), replace = TRUE) | ||
| geojson$wallColor= sample(cols, nrow(geojson), replace = TRUE) | ||
| geojson$roofColor= sample(darkcols, nrow(geojson), replace = TRUE) | ||
| geojson$shape= sample(c("cylinder","sphere",""), nrow(geojson), replace = TRUE) | ||
| geojson$roofHeight= geojson$height + sample(seq(1,10,1), nrow(geojson), replace = TRUE) | ||
| geojson$roofShape= sample(c("dome","pyramidal", "butterfly","gabled","half-hipped", | ||
| "gambrel","onion"), nrow(geojson), replace = TRUE) | ||
| geojson <- yyjsonr::write_geojson_str(geojson) | ||
| class(geojson) <- "json" | ||
|
|
||
| ## UI ########### | ||
| ui <- fluidPage( | ||
| leafletOutput("map", height = "700px"), | ||
| dateInput("date", "Date"), | ||
| sliderInput("time", "Time", 0, max = 24, value = 4, step = 1) | ||
| # actionButton("update", "Update Date") | ||
| titlePanel("OSM Buildings (2.5D)"), | ||
| sidebarLayout( | ||
| sidebarPanel( | ||
| h4("Use the OSM Buildings or a Custom GeoJSON") | ||
| , selectInput("src", label = "Data Source", choices = c("OSM", "GeoJSON")) | ||
| , h4("Change the Date and Time-Slider to Adapt the Shadow") | ||
| , dateInput("date", "Date") | ||
| , sliderInput("time", "Time", 7, max =20, value = 11, step = 1) | ||
| , h4("Change the Style and the Data") | ||
| , actionButton("style", "Update Style") | ||
| , actionButton("data", "Update Data") | ||
| ), | ||
| mainPanel( | ||
| leafletOutput("map", height = "700px") | ||
| ), | ||
| fluid = TRUE | ||
| ) | ||
| ) | ||
|
|
||
| ## SERVER ########### | ||
| server <- function(input, output, session) { | ||
| output$map <- renderLeaflet({ | ||
| leaflet() %>% | ||
| # addTiles() %>% | ||
| # addProviderTiles("CartoDB.DarkMatter") %>% | ||
| addBuildings() %>% | ||
| addMarkers(data = breweries91) %>% | ||
| setView(lng = 13.40438, lat = 52.51836, zoom = 16) | ||
| m <- leaflet() %>% | ||
| addProviderTiles("CartoDB") | ||
|
|
||
| if (input$src == "OSM") { | ||
| m <- m %>% | ||
| addBuildings( | ||
| group = "Buildings" | ||
| # , eachFn = leaflet::JS("function(e) { console.log('each feature:', e); }") | ||
| # , clickFn = leaflet::JS("function(e) { console.log('clicked:', e); }") | ||
| ) | ||
| } else { | ||
| m <- m %>% | ||
| addBuildings( | ||
| group = "Buildings" | ||
| , buildingURL = NULL | ||
| , data = geojson | ||
| ) | ||
| } | ||
|
|
||
| m %>% | ||
| addLayersControl(overlayGroups = "Buildings") %>% | ||
| setView(lng = -76.51, lat = 42.433, zoom = 15) | ||
| }) | ||
| observe({ | ||
| # observeEvent(input$update, { | ||
| # browser() | ||
| date <- input$date | ||
| time <- formatC(input$time, width = 2, format = "d", flag = "0") | ||
| updatetime <- paste0(date, " ", time, ":00:00") | ||
| updatetime <- paste0(input$date, " ", time, ":00:00") | ||
| leafletProxy("map") %>% | ||
| updateBuildingTime(time = as.POSIXct(updatetime)) | ||
| }) | ||
| observeEvent(input$style, { | ||
| leafletProxy("map") %>% | ||
| setBuildingStyle(style = list(color = sample(cols, 1), | ||
| wallColor = sample(cols, 1), | ||
| roofColor = sample(cols, 1), | ||
| roofShape = sample(c("dome","pyramidal", "butterfly","gabled","half-hipped", | ||
| "gambrel","onion"), 1), | ||
| shadows = sample(c(TRUE, FALSE), 1))) | ||
| }) | ||
| observeEvent(input$data, { | ||
| geojson <- yyjsonr::read_geojson_file("Buildings_mini.geojson") | ||
| filtered <- geojson[sample(1:nrow(geojson), 10, F),] | ||
| filtered$height= sample(seq(50,140,5), nrow(filtered), replace = TRUE) | ||
| filtered$color= sample(cols, nrow(filtered), replace = TRUE) | ||
| filtered$wallColor= sample(cols, nrow(filtered), replace = TRUE) | ||
| filtered$roofColor= sample(cols, nrow(filtered), replace = TRUE) | ||
| filtered <- yyjsonr::write_geojson_str(filtered) | ||
| class(filtered) <- "json" | ||
|
|
||
| leafletProxy("map") %>% | ||
| setBuildingData(data = filtered) | ||
| }) | ||
| } | ||
|
|
||
| shinyApp(ui, server) | ||
|
|
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