From 1e3d257985ca6ccc544134458043499489bda606 Mon Sep 17 00:00:00 2001
From: Christoph Giess <ch.giess@gmx.de>
Date: Mon, 17 Jul 2023 17:50:02 +0200
Subject: [PATCH] =?UTF-8?q?Exportieren=20von=20Grafiken=20bei=20matplotlib?=
 =?UTF-8?q?=20&=20pandas=20hinzugef=C3=BCgt?=
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---
 jupyter_book/03_matplotlib.ipynb  | 21 ++++++++++++++++++++-
 jupyter_book/05_pandas_visu.ipynb | 16 ++++++++++++++++
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/jupyter_book/03_matplotlib.ipynb b/jupyter_book/03_matplotlib.ipynb
index 9bf29eb..bfa29ba 100644
--- a/jupyter_book/03_matplotlib.ipynb
+++ b/jupyter_book/03_matplotlib.ipynb
@@ -338,7 +338,26 @@
     "plt.legend(['sin(x)', 'cos(x)']);\n",
     "plt.show()"
    ]
-  }
+  },
+  {
+    "cell_type": "markdown",
+    "id": "470cd36c-2758-4f6f-b359-3a6adfb127dc",
+    "metadata": {},
+    "source": [
+     "## Grafiken speichern/exportieren\n",
+     "\n",
+     "Bilder können nicht nur angezeigt sondern auch gespeichert werden. Dies muss *vor* dem Aufruf von `plt.show()` geschehen:\n",
+     "\n",
+     "```\n",
+     "plt.savefig('sin_cos.png');\n",
+     "plt.savefig('sin_cos.pdf');\n",
+     "plt.savefig('sin_cos.svg');\n",
+     "plt.savefig('sin_cos.png', dpi=300, transparent=True, bbox_inches='tight')\n",
+     "\n",
+     "plt.show()\n",
+     "```"
+   ]
+   }
  ],
  "metadata": {
   "kernelspec": {
diff --git a/jupyter_book/05_pandas_visu.ipynb b/jupyter_book/05_pandas_visu.ipynb
index 995065d..604affd 100644
--- a/jupyter_book/05_pandas_visu.ipynb
+++ b/jupyter_book/05_pandas_visu.ipynb
@@ -821,6 +821,22 @@
     "d.groupby(\"Typ\")[\"Preis\"].sum().plot(kind=\"pie\");\n",
     "plt.show()"
    ]
+   },
+   {
+    "cell_type": "markdown",
+    "id": "e6c9a7fb-b374-4743-8b37-77fc8de79cbd",
+    "metadata": {},
+    "source": [
+     "## Grafiken speichern/exportieren\n",
+     "\n",
+     "Zum speichern der Grafiken muss man sich zuerst mittels `get_figure()` einen Verweis auf die Grafik holen ",
+     "Danach kann man über diese Referenz die Grafik in verschiedenen Formaten speichern:\n",
+     "```\n",
+     "fig = d.groupby(\"Typ\")[\"Preis\"].sum().plot(kind=\"pie\").get_figure();\n",
+     "fig.savefig('pie.png');\n",
+     "fig.savefig('pie.pdf');\n",
+     "```"
+    ]
   }
  ],
  "metadata": {