This function enables hover functionality for maplibre and mapboxgl widgets
in Shiny applications, providing _hover
and _feature_hover
input values.
Arguments
- map
A maplibre or mapboxgl widget object.
- coordinates
Logical. If TRUE, provides general mouse coordinates via
_hover
input. Defaults to TRUE.- features
Logical. If TRUE, provides feature information via
_feature_hover
input when hovering over map features. Defaults to TRUE.- layer_id
Character. If provided, only features from the specified layer will be included in the
_feature_hover
input. Defaults to NULL. For multiple layers, provide a vector of layer IDs.
Examples
if (FALSE) { # \dontrun{
library(shiny)
library(mapgl)
ui <- fluidPage(
maplibreOutput("map"),
verbatimTextOutput("hover_info")
)
server <- function(input, output) {
output$map <- renderMaplibre({
maplibre() |>
enable_shiny_hover()
})
output$hover_info <- renderText({
paste("Mouse at:", input$map_hover$lng, input$map_hover$lat)
})
}
shinyApp(ui, server)
} # }