I have two select inputs in my shiny app and I am trying to make it so that the first selectinput controls the dataset for both the leaflet map and for the other select input. When the "time" selectinput is "Day", I want the choices for the "food" selectinput to be dfmorn$food and I want the map to reflect this change. Likewise for "Night", I want the "food" input to display dfnight$food, and the map to reflect. Currently neither the map, nor the "food" selectinput are reacting to the "food" selectinput.
library(leaflet)
library(shiny)
library(shinydashboard)
library(dplyr)
#Data Sample
longN <- c(-96.72363, -96.72880, -96.72700)
latN <- c(17.06167, 17.06200, 17.06170 )
nameN <- c("jim", "grant", "pablo")
foodN <- c("tacos", "burger", "elote")
dfnight <- data.frame(longN, latN, nameN, foodN)
longM <- c(-96.7261564, -96.7260505, -96.7259757)
latM <- c(17.0543072,17.0548387, 17.0553262)
nameM <- c("bob", "frank", "sue")
foodM <- c("memelas","tortas", "tacos")
dfmorn <- data.frame(longM, latM, nameM, foodM)
#icons
puestocolorsN = c ("tacos" = 'green',
"burger" = 'orange',
"elote" = 'red'
)
colorsN = puestocolorsN[dfnight$food]
iconsN <- awesomeIcons(icon = 'ios-close',
iconColor = 'black',
library = 'ion',
markerColor = unname(colors) )
puestocolorsM = c ("tacos" = 'green',
"memelas" = 'orange',
"tortas" = 'black')
colorsM = puestocolorsM[dfmorn$food]
iconsM <- awesomeIcons(icon = 'ios-close',
iconColor = 'black',
library = 'ion',
markerColor = unname(colorsM) )
#ui
ui <- fluidPage(
titlePanel(title = "Street Food Oaxaca"),
sidebarLayout(
sidebarPanel(
selectInput(
inputId = "time",
label = "Select Time",
choices = c("Day", "Night"),
selected = "Day"
),
# uiOutput("conditionalUI")
selectInput(
inputId = "food",
label = "Type of Food",
choices = unique(dfmorn$food),
selected = dfmorn$food[1:5],
multiple = TRUE)),
mainPanel(h3("Map"), leafletOutput("map", width = "800", height = "600"))))
#server
server <- function(input, output, session){
observeEvent(input$time, {
reactive(
if(input$time == "Day") {
renderUI({
SelectInput(
inputId = "food",
label = "Type of Food",
choices = unique(dfmorn$food),
selected = dfmorn$food[1:5],
multiple = TRUE
)
})
}else {
renderUI({
updateSelectInput(
inputId = "food",
label = "Type of Food",
choices = unique(dfnight$food),
multiple = TRUE
)
})
}
)
})
dfmorn1 <- eventReactive(input$food, {
dfmorn %>% dplyr::filter(food %in% input$food)
})
dfnight1 <- eventReactive(input$food, {
dfnight %>% dplyr::filter(food %in% input$food)
})
observeEvent(input$time, {
reactive(
if(input$time == "Day") {
output$map = renderLeaflet({
leaflet(data = dfmorn1()) %>%
setView(lng = -96.725, lat = 17.0618, zoom =14)%>%
addTiles() %>%
addAwesomeMarkers(
lng = ~long,
lat = ~lat,
icon = icons,
label = ~as.character(dfmorn$name))
})
}else {
output$map = renderLeaflet({
leaflet(data = dfnight1()) %>%
setView(lng = -96.725, lat = 17.0618, zoom =14)%>%
addTiles() %>%
addAwesomeMarkers(
lng = ~long,
lat = ~lat,
icon = icons,
label = ~as.character(dfmorn$name)
)
})
}
)
})
}
#Run the application
shinyApp(ui = ui , server = server)
Also still trying to figure out grouping the marker colors based on dfmorn$food and dfnight$food as discussed here: https://stackoverflow.com/questions/72410372/assigning-color-to-leaflet-awesomemarkers-based-on-chr-column
You had a few typos and incorrect way to update selectInput. Try this
library(leaflet)
library(shiny)
library(shinydashboard)
library(dplyr)
#Data Sample
longN <- c(-96.72363, -96.72880, -96.72700)
latN <- c(17.06167, 17.06200, 17.06170 )
nameN <- c("jim", "grant", "pablo")
foodN <- c("tacos", "burger", "elote")
dfnight <- data.frame(long=longN, lat=latN, name = nameN, food=foodN)
longM <- c(-96.7261564, -96.7260505, -96.7259757)
latM <- c(17.0543072,17.0548387, 17.0553262)
nameM <- c("bob", "frank", "sue")
foodM <- c("memelas","tortas", "tacos")
dfmorn <- data.frame(long=longM, lat=latM, name = nameM, food=foodM)
puestocolorsN = c ("tacos" = 'green',
"burger" = 'orange',
"elote" = 'red'
)
colorsN = puestocolorsN[dfnight$food]
iconsN <- awesomeIcons(icon = 'ios-close',
iconColor = 'black',
library = 'ion',
markerColor = unname(colorsN) )
puestocolorsM = c ("tacos" = 'green',
"memelas" = 'orange',
"tortas" = 'black')
colorsM = puestocolorsM[dfmorn$food]
iconsM <- awesomeIcons(icon = 'ios-close',
iconColor = 'black',
library = 'ion',
markerColor = unname(colorsM) )
#ui
ui <- fluidPage(
titlePanel(title = "Street Food Oaxaca"),
sidebarLayout(
sidebarPanel(
selectInput(
inputId = "time",
label = "Select Time",
choices = c("Day", "Night"),
selected = "Day"
),
# uiOutput("conditionalUI")
selectInput(
inputId = "food",
label = "Type of Food",
choices = unique(dfmorn$food),
selected = dfmorn$food[1:5],
multiple = TRUE)),
mainPanel(h3("Map"), leafletOutput("map", width = "800", height = "600")))
)
#server
server <- function(input, output, session){
observeEvent(input$time, {
if(input$time == "Day") choices <- unique(dfmorn$food)
else choices <- unique(dfnight$food)
updateSelectInput(
inputId = "food",
label = "Type of Food",
choices = choices,
select=choices[1:3]
)
})
dfmrn <- eventReactive(input$food, {
if(input$time == "Day") df <- dfmorn
else df <- dfnight
df %>% dplyr::filter(food %in% input$food)
})
observe({print(dfmrn())})
output$map = renderLeaflet({
req(dfmrn())
leaflet(data = dfmrn()) %>%
setView(lng = -96.725, lat = 17.0618, zoom =14)%>%
addTiles()
})
observeEvent(input$food, {
if(input$time == "Day") icons <- iconsM
else icons <- iconsN
popup <- paste( "<b>Name:</b>", dfmrn()$name, "<br>", "<b>Type of food:</b>", dfmrn()$food)
leafletProxy("map", session) %>%
clearShapes() %>%
clearMarkers() %>%
addAwesomeMarkers(
data = dfmrn(),
lng = ~long,
lat = ~lat,
icon = icons, popup = popup,
label = ~as.character(name)
)
})
}
#Run the application
shinyApp(ui = ui , server = server)