Add source example files

source/plotting/agg-test.py

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+import matplotlib
+import pandas as pd
+from matplotlib import pyplot
+from matplotlib.axes import Axes
+
+matplotlib.use("TkAgg")
+pyplot.style.use('ggplot')
+pyplot.rcParams["font.family"] = "Cabin"
+
+data = pd.DataFrame(data={
+    "product": ["pomme", "poire", "banane", "pêche"],
+    "price": [1.99, 2.49, 2.99, 3.49],
+    "wpu": [200, 180, 140, 200]
+})
+# Générer un graphique dans Matplotlib
+data.plot.bar(x="product", y=["price", "wpu"], rot=0.0, secondary_y="wpu", legend="reverse", title="Prix et poids unitaires")
+prices, weights = pyplot.gcf().axes  # type: Axes
+prices.legend(bbox_to_anchor=(0.0, 1.1), loc="upper left")
+weights.legend(bbox_to_anchor=(1.0, 1.1), loc="upper right")
+# Il est difficile de personnaliser le contenu du graphique
+options: dict = {"fontsize": 8, "color": "w", "rotation": 90, "label_type": "center"}
+prices.bar_label(prices.containers[0], labels=[f"{p}€" for p in data["price"]], **options)
+weights.bar_label(weights.containers[0], labels=[f"{p}g" for p in data["wpu"]], **options)
+pyplot.gcf().savefig("eda-matplotlib-bar-labeled.png")