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我一直試圖通過國家地圖的WMS將該地圖(下圖)作爲圖層獲取到R的單張中,但沒有取得任何成功。將WMS添加到宣傳單
這裏是我的代碼:
map <- leaflet() %>% addTiles() %>%
addWMSTiles(baseUrl="https://raster.nationalmap.gov/ArcGIS/services/LandCover/USGS_EROS_LandCover_NLCD/MapServer/WMSServer?",
layers = "33",
group = "NLCD",
options = WMSTileOptions(
format = "image/png",
version = "1.3.0",
transparent = TRUE)) %>%
addLayersControl(
overlayGroups = c("NLCD"),
position = 'bottomleft')
map