Блестящий листок R неправильно меняет цвет маркеров круга - PullRequest
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Блестящий листок R неправильно меняет цвет маркеров круга

1 голос
/ 11 июля 2020

Я пытаюсь сделать карту листовок блестящей, чтобы пользователь мог выбрать переменную, а карта раскрасила маркеры в соответствии с переменной, выбранной пользователем. Я могу раскрасить маркеры, но, к сожалению, цвета не соответствуют выбранной переменной. Так, например, если пользователь выбирает цвет по «Году», все точки одного года должны быть окрашены одинаково, но это не так. Что мне не хватает? 

library(shiny)
library(dplyr)
library(leaflet)
library(RColorBrewer)

SampleData <- data.frame(year = c('2017', '2018', '2017', '2020'),
                         lon = c(38.62893, 38.62681, 38.62797, 38.62972),
                         lat = c(-90.26233, -90.25272, -90.26232, -90.25703),
                         month = c('January', 'February', 'March', 'April'),
                         new_use = c('Industrial', 'Institutional', 'Commercial', 'Residential'))

vars <- c(
  "Color by Year" = "year",
  "Color by Month" = "month",
  "Color by Use" = "new_use"
)

ui <- bootstrapPage(
    tags$style(type = "text/css", "html, body {width:100%;height:100%}"),
    leafletOutput("map", width = "100%", height = "100%"),
    absolutePanel(top = 10, right = 10,
                  pickerInput(inputId = "month", 
                              label = "Select Month:", 
                              choices = sort(unique(SampleData$month)), 
                              multiple = TRUE,
                              selected = sort(unique(SampleData$month)),
                              options = list(
                                `actions-box` = TRUE, 
                                `selected-text-format` = paste0("count > ", length(sort(unique(SampleData$month))) -1), `count-selected-text` = "All Months")),
                  pickerInput(inputId = "year", 
                              label = "Select Year:", 
                              choices = sort(unique(SampleData$year)), 
                              multiple = TRUE,
                              selected = sort(unique(SampleData$year)),
                              options = list(
                                `actions-box` = TRUE, 
                                `selected-text-format` = paste0("count > ", length(sort(unique(SampleData$year))) -1), `count-selected-text` = "All Years")),
                  pickerInput(inputId = "new_use", 
                              label = "Select Permit Use:", 
                              choices = sort(unique(SampleData$new_use)), 
                              multiple = TRUE,
                              selected = sort(unique(SampleData$new_use)),
                              options = list(
                                `actions-box` = TRUE, 
                                `selected-text-format` = paste0("count > ", length(sort(unique(SampleData$new_use))) -1), `count-selected-text` = "All Permit Types")),
                  selectInput(inputId = "color",
                              label = "Select a Color Scheme:", 
                              choices = vars)
    )
)

server <- function(input, output, session) {
    
    output$map <- renderLeaflet({
        leaflet() %>% 
            setView(lng = -90.1994, lat = 38.6270, zoom = 10)%>%
            addProviderTiles(providers$CartoDB.Positron)
    })
    
    # Reactive expression for the data subsetted to what the user selected
    filteredData <- reactive({
        dplyr::filter(SampleData, year %in% input$year & new_use %in% input$new_use & month %in% input$month)
    })
  
observe({
  
  colorBy <- input$color

    if (colorBy == "year") {
      colorData <- sort(unique(SampleData$year))
      pal <- colorFactor("Set1", colorData)
     } 
    if (colorBy == "month") {
      colorData <- sort(unique(SampleData$month))
      pal <- colorFactor("Set1", colorData)
    }
    if (colorBy == "dayNight") {
      colorData <- sort(unique(tot$dayNight))
      pal <- colorFactor("Set1", colorData)
    }
  
        leafletProxy("map") %>%
            clearShapes() %>%
            addCircleMarkers(data = filteredData(), 
             ~lat, ~lon, color = pal(colorData), popup = paste("<b>Year:</b> ", filteredData()$year, "<br>",
                  "<b>Permit Type:</b> ", filteredData()$new_use, "<br>")) %>%
       addLegend("bottomright", pal=pal, values=colorData, title=colorBy,
         layerId="colorLegend")
    })
}    
    


shinyApp(ui, server)

1 Ответ

0 голосов
/ 12 июля 2020

colorFactor нужны категориальные данные 

library(shiny)
library(shinyWidgets)
library(dplyr)
library(leaflet)
library(RColorBrewer)

SampleData <- data.frame(year = c('2017', '2018', '2017', '2020', '2018', '2018', '2017'),
                         lon = c(38.62893, 38.62681, 38.62797, 38.62972, 38.624, 38.6245, 38.6252),
                         lat = c(-90.26233, -90.25272, -90.26232, -90.25703, -90.264, -90.265, -90.266),
                         month = c('January', 'February', 'March', 'April', 'February', 'March', 'April'),
                         new_use = c('Industrial', 'Institutional', 'Commercial', 'Residential',  'Institutional', 'Commercial', 'Residential'))

vars <- c(
  "Color by Year" = "year",
  "Color by Month" = "month",
  "Color by Use" = "new_use"
)

ui <- bootstrapPage(
  tags$style(type = "text/css", "html, body {width:100%;height:100%}"),
  leafletOutput("map", width = "100%", height = "100%"),
  absolutePanel(top = 10, right = 10,
                pickerInput(inputId = "month", 
                            label = "Select Month:", 
                            choices = sort(unique(SampleData$month)), 
                            multiple = TRUE,
                            selected = sort(unique(SampleData$month)),
                            options = list(
                              `actions-box` = TRUE, 
                              `selected-text-format` = paste0("count > ", length(sort(unique(SampleData$month))) -1), `count-selected-text` = "All Months")),
                pickerInput(inputId = "year", 
                            label = "Select Year:", 
                            choices = sort(unique(SampleData$year)), 
                            multiple = TRUE,
                            selected = sort(unique(SampleData$year)),
                            options = list(
                              `actions-box` = TRUE, 
                              `selected-text-format` = paste0("count > ", length(sort(unique(SampleData$year))) -1), `count-selected-text` = "All Years")),
                pickerInput(inputId = "new_use", 
                            label = "Select Permit Use:", 
                            choices = sort(unique(SampleData$new_use)), 
                            multiple = TRUE,
                            selected = sort(unique(SampleData$new_use)),
                            options = list(
                              `actions-box` = TRUE, 
                              `selected-text-format` = paste0("count > ", length(sort(unique(SampleData$new_use))) -1), `count-selected-text` = "All Permit Types")),
                selectInput(inputId = "color",
                            label = "Select a Color Scheme:", 
                            choices = vars)
  )
)

server <- function(input, output, session) {
  
  output$map <- renderLeaflet({
    leaflet() %>% 
      setView(lng = -90.1994, lat = 38.6270, zoom = 10)%>%
      addProviderTiles(providers$CartoDB.Positron)
  })
  
  # Reactive expression for the data subsetted to what the user selected
  filteredData <- reactive({
    dplyr::filter(SampleData, year %in% input$year & new_use %in% input$new_use & month %in% input$month)
  })
  
  observe({
    
    colorBy <- input$color
    
    if (colorBy == "year") {
      colorData <- factor(SampleData$year)
      pal <- colorFactor(palette = "Set1", levels = levels(colorData))
    } 
    if (colorBy == "month") {
      colorData <- factor(SampleData$month)
      pal <- colorFactor(palette = "Set1", levels = levels(colorData))
    }
    if (colorBy == "dayNight") {
      colorData <- factor(tot$dayNight)
      pal <- colorFactor(palette = "Set1", levels = levels(colorData))
    }
    
    leafletProxy("map") %>%
      clearShapes() %>%
      addCircleMarkers(data = filteredData(), 
                       ~lat, ~lon, color = ~pal(colorData), popup = paste("<b>Year:</b> ", filteredData()$year, "<br>",
                                                                         "<b>Permit Type:</b> ", filteredData()$new_use, "<br>")) %>%
      addLegend("bottomright", pal = pal, values = levels(colorData), title = colorBy,
                layerId = "colorLegend")
  })
}    



shinyApp(ui, server)
...