clear_drawn_features: Clear all drawn features from a map

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

Clear all drawn features from a map

Description

This function removes all features that have been drawn using the draw control on a Mapbox GL or MapLibre GL map in a Shiny application.

Usage

clear_drawn_features(map)

Arguments

map	A proxy object created by the mapboxgl_proxy or maplibre_proxy functions.

Value

The modified map object with all drawn features cleared.

Examples

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

ui <- fluidPage(
    mapboxglOutput("map"),
    actionButton("clear_btn", "Clear Drawn Features")
)

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$clear_btn, {
        mapboxgl_proxy("map") |>
            clear_drawn_features()
    })
}

shinyApp(ui, server)

## End(Not run)

mapgl documentation built on June 16, 2025, 5:09 p.m.