get_drawn_features: Get drawn features from the map

In mapgl: Interactive Maps with 'Mapbox GL JS' and 'MapLibre GL JS'

Get drawn features from the map

Description

Get drawn features from the map

Usage

get_drawn_features(map)

Arguments

map	A map object created by the mapboxgl function, or a mapboxgl proxy.

Value

An sf object containing the drawn features.

Examples

## Not run: 
# In a Shiny application
library(shiny)
library(mapgl)

ui <- fluidPage(
    mapboxglOutput("map"),
    actionButton("get_features", "Get Drawn Features"),
    verbatimTextOutput("feature_output")
)

server <- function(input, output, session) {
    output$map <- renderMapboxgl({
        mapboxgl(
            style = mapbox_style("streets"),
            center = c(-74.50, 40),
            zoom = 9
        ) |>
            add_draw_control()
    })

    observeEvent(input$get_features, {
        drawn_features <- get_drawn_features(mapboxgl_proxy("map"))
        output$feature_output <- renderPrint({
            print(drawn_features)
        })
    })
}

shinyApp(ui, server)

## End(Not run)

mapgl documentation built on Nov. 1, 2024, 5:08 p.m.