ENH: Add basic point set example notebook

Author: bnmajor

examples/NumPyArrayPointSet.ipynb

@@ -0,0 +1,78 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "492c7f7a-b291-4f01-9c85-9fea9da52fcc",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import sys\n",
+    "!{sys.executable} -m pip install -q --pre itkwidgets"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "ee6c9cad-31f9-4adc-8740-6bb2103ade97",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import numpy as np\n",
+    "from itkwidgets import view"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "684615f0-f389-460f-8de6-6e3fc986d022",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "number_of_points = 3000\n",
+    "gaussian_mean = [0.0, 0.0, 0.0]\n",
+    "gaussian_cov = [[1.0, 0.0, 0.0], [0.0, 2.0, 0.0], [0.0, 0.0, 0.5]]\n",
+    "point_set = np.random.multivariate_normal(gaussian_mean, gaussian_cov, number_of_points)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "7571e8e2-5b3e-4204-9934-d30472e2f427",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "view(point_sets=point_set)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "4f8a0ef9-68fb-44f0-bd6d-7ad31615ee06",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.8.10"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}