changed scale example in Geometries notebook to use feature that is s…

…cale dependent, previous example was a bit confusing as the results looked no different (#137)

notebooks/user_guide/Geometries.ipynb

@@ -75,8 +75,17 @@
    "outputs": [],
    "source": [
     "%%output backend='bokeh'\n",
-    "%%opts Feature [scale='110m']\n",
-    "gf.ocean * gf.land() * gv.Feature(graticules, group='Lines').opts(plot=dict(scale='110m'))"
+    "%%opts Feature.Land.110m [scale='110m']\n",
+    "%%opts Feature.Land.50m [scale='50m']\n",
+    "(gf.ocean * gf.land().relabel(label='110m') * gv.Feature(graticules, group='Lines') + \n",
+    "     gf.ocean * gf.land().relabel(label='50m') * gv.Feature(graticules, group='Lines'))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "zoom in using the bokeh zoom widget and you should see that the right hand panel is using a higher resultion dataset for the land feature"
    ]
   },
   {