Fix to drop duplicate zones

Author: brightsparc

notebook/nyctaxi.ipynb

@@ -107,6 +107,8 @@
     "zones[\"latitude\"] = zones.centroid.to_crs(epsg=4326).x\n",
     "zones[\"longitude\"] = zones.centroid.to_crs(epsg=4326).y\n",
     "\n",
+    "# Drop duplicate by location ID keeping the first\n",
+    "zones = zones.drop_duplicates(subset=\"LocationID\", keep=\"first\")\n",
     "# Drop cols we don't need and inspect results\n",
     "zones = zones.set_index(\"LocationID\").drop(\n",
     "    [\"OBJECTID\", \"Shape_Leng\", \"Shape_Area\"], axis=1\n",