Prettify fft comparisons

1 files changed, 19 insertions, 5 deletions

diff --git a/lab-windows/grid_frequency_spectra.ipynb b/lab-windows/grid_frequency_spectra.ipynb
index 3d375ef..7b187f5 100644
--- a/lab-windows/grid_frequency_spectra.ipynb
+++ b/lab-windows/grid_frequency_spectra.ipynb
@@ -141,13 +141,21 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 23,
+   "execution_count": 72,
    "metadata": {},
    "outputs": [
     {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "<ipython-input-72-51d3a7cc1678>:20: RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly closed and may consume too much memory. (To control this warning, see the rcParam `figure.max_open_warning`).\n",
+      "  fig, ax = plt.subplots()\n"
+     ]
+    },
+    {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "fd94bc97a276400db0539b703c4eeeac",
+       "model_id": "2991d932b113496a9135d569f9577abe",
        "version_major": 2,
        "version_minor": 0
       },
@@ -161,10 +169,10 @@
     {
      "data": {
       "text/plain": [
-       "(1.6666666666666667e-05, 0.5)"
+       "(5e-07, 0.02)"
       ]
      },
-     "execution_count": 23,
+     "execution_count": 72,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -194,8 +202,14 @@
     "ax.xaxis.set_major_formatter(plt.FuncFormatter(lambda x, _pos: f'{1/x:.1f}'))\n",
     "ax.set_xlabel('T in s')\n",
     "ax.set_ylabel('Amplitude Δf')\n",
+    "\n",
+    "for i, t in enumerate([45, 60, 600, 1200, 1800, 3600]):\n",
+    "    ax.axvline(1/t, color='red', alpha=0.5)\n",
+    "    ax.annotate(f'{t} s', xy=(1/t, 3e-3), xytext=(-15, 0), xycoords='data', textcoords='offset pixels', rotation=90)\n",
+    "#ax.text(1/60, 10,'60 s', ha='left')\n",
     "ax.grid()\n",
-    "ax.set_xlim([1/60000, 0.5])"
+    "ax.set_xlim([1/60000, 0.5])\n",
+    "ax.set_ylim([5e-7, 2e-2])"
    ]
   },
   {