scale control added (#885)

Author: MackyDIARRA

examples/Radiation.ipynb

@@ -2,14 +2,20 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 3,
    "id": "43ef0082-9552-44e9-82d3-c1e27209d2c5",
-   "metadata": {},
+   "metadata": {
+    "collapsed": true,
+    "jupyter": {
+     "outputs_hidden": true
+    },
+    "tags": []
+   },
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "e6e1117099a34472927b621c0c6b7e70",
+       "model_id": "a55ec68b752a4d5fb30ef00a008bad72",
        "version_major": 2,
        "version_minor": 0
       },
@@ -22,7 +28,7 @@
     }
    ],
    "source": [
-    "from ipyleaflet import Map, TileLayer, FullScreenControl\n",
+    "from ipyleaflet import Map, TileLayer, FullScreenControl, ScaleControl\n",
     "\n",
     "m = Map(center=(47, 2), zoom=5)\n",
     "\n",
@@ -32,15 +38,23 @@
     "\n",
     "fullscreen = FullScreenControl()\n",
     "m.add_control(fullscreen)\n",
-    "\n",
-    "m"
+    "scalecontrol = ScaleControl(position='bottomleft')\n",
+    "m.add_control(scalecontrol)\n",
+    "m\n",
+    "\n"
    ]
   },
   {
    "cell_type": "code",
    "execution_count": null,
    "id": "b6e75898-89cf-44e1-826a-11e7b4e9b427",
-   "metadata": {},
+   "metadata": {
+    "collapsed": true,
+    "jupyter": {
+     "outputs_hidden": true
+    },
+    "tags": []
+   },
    "outputs": [],
    "source": []
   }