Change nematic example to conform to new API for freud 3.0

module_intros/density.LocalDensity.ipynb

@@ -31,6 +31,8 @@
    "outputs": [],
    "source": [
     "# Define some helper plotting functions.\n",
+    "\n",
+    "\n",
     "def add_patches(ax, points, radius=1, fill=False, color=\"#1f77b4\", ls=\"solid\", lw=None):\n",
     "    \"\"\"Add set of points as patches with radius to the provided axis\"\"\"\n",
     "    for pt in points:\n",

module_intros/density.RDF-BinWidth.ipynb

@@ -27,6 +27,8 @@
    "outputs": [],
    "source": [
     "# Define some helper plotting functions.\n",
+    "\n",
+    "\n",
     "def plot_rdf(box, points, prop, r_max=3.5, bins_array=[20, 75, 3000]):\n",
     "    \"\"\"Helper function for plotting RDFs.\"\"\"\n",
     "    fig, axes = plt.subplots(1, len(bins_array), figsize=(16, 3))\n",