Improve maplibre add_wms_layer

docs/maplibre/wms_source.ipynb

@@ -82,6 +82,33 @@
    "source": [
     "![](https://i.imgur.com/itFOq8z.png)"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "m = leafmap.Map(center=[-74.5447, 40.6892], zoom=8, style=\"streets\")\n",
+    "url = \"https://img.nj.gov/imagerywms/Natural2015\"\n",
+    "layers = \"Natural2015\"\n",
+    "m.add_wms_layer(url, layers=layers, before_id=\"aeroway_fill\")\n",
+    "m"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "m = leafmap.Map(center=[-100.307965, 46.98692], zoom=13, pitch=45, style=\"3d-hybrid\")\n",
+    "url = \"https://fwspublicservices.wim.usgs.gov/wetlandsmapservice/services/Wetlands/MapServer/WMSServer\"\n",
+    "m.add_wms_layer(url, layers=\"1\", name=\"NWI\", opacity=0.6)\n",
+    "m.add_layer_control(bg_layers=True)\n",
+    "m.add_legend(builtin_legend=\"NWI\", title=\"Wetland Type\")\n",
+    "m"
+   ]
   }
  ],
  "metadata": {

leafmap/maplibregl.py

@@ -813,6 +813,8 @@ def add_tile_layer(
     def add_wms_layer(
         self,
         url: str,
+        layers: str,
+        format: str = "image/png",
         name: str = "WMS Layer",
         attribution: str = "",
         opacity: float = 1.0,
@@ -831,6 +833,8 @@ def add_wms_layer(
 
         Args:
             url (str): The URL of the tile layer.
+            layers (str): The layers to include in the WMS request.
+            format (str, optional): The format of the tiles in the layer.
             name (str, optional): The name to use for the layer. Defaults to
                 'WMS Layer'.
             attribution (str, optional): The attribution to use for the layer.
@@ -849,6 +853,9 @@ def add_wms_layer(
         Returns:
             None
         """
+
+        url = f"{url.strip()}?service=WMS&request=GetMap&layers={layers}&styles=&format={format.replace('/', '%2F')}&transparent=true&version=1.1.1&height=256&width=256&srs=EPSG%3A3857&bbox={{bbox-epsg-3857}}"
+
         self.add_tile_layer(
             url,
             name=name,