09: Add argparse interface

Exercise sheet 9/exercise_sheet_09.ipynb

@@ -231,6 +231,33 @@
     "plt.show()"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "e506d9a5",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import h5py\n",
+    "import numpy as np\n",
+    "from matplotlib import pyplot as plt\n",
+    "\n",
+    "# Load data\n",
+    "output_filename = \"preliminary_simulation.h5\"\n",
+    "with h5py.File(output_filename,'r') as f:\n",
+    "    handler = f[\"mean-magn\"]\n",
+    "    mean_magn = np.array(handler)\n",
+    "    kappas = handler.attrs[\"kappas\"]\n",
+    "\n",
+    "# Plotterdeplotterdeplot\n",
+    "plt.figure()\n",
+    "plt.errorbar(kappas,[m[0] for m in mean_magn],yerr=[m[1] for m in mean_magn],fmt='-o')\n",
+    "plt.xlabel(r\"$\\kappa$\")\n",
+    "plt.ylabel(r\"$|m|$\")\n",
+    "plt.title(r\"Absolute field average on $3^4$ lattice, $\\lambda = 1.5$\")\n",
+    "plt.show()"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "d4640925",