File:Rose des vents exemple Python.svg
Summary
| Description |
Français : Rose des vents avec des données arbitraires, utilisé pour un exemple de création de graphique avec le langage Python/Matplotlib.
English: Wind rose with dummy data, used as an example of creation of a plot with the Python/Matplotlib language. |
| Date | |
| Source | Own work. Data extracted from: https://services.meteofrance.com/climatologie/ROSE-DES-VENTS/rose-des-vents |
| Author | Cdang |
This W3C-invalid plot was created with Matplotlib.Category:Invalid SVG created with Matplotlib#1000Rose%20des%20vents%20exemple%20Python.svg
#!/usr/bin/python3
import numpy as np
import matplotlib.pyplot as plt
# **************
# * Constantes *
# **************
# positions angulaires
angles = 2*np.pi*np.linspace(0, 1, 9) # huitièmes de cercle
radDeg = 180/np.pi # conversion radians → degrés
etoile = np.array([1, 0.2, 1, 0.2, 1, 0.2, 1, 0.2, 1]) # Tracé de l'étoile
vents = np.array([2.85, 3.34, 5.2, 4.025, 4.9, 9.63, 7.5, 2.35, 2.85]) # Fréquence (unité arbitraire)
vents = vents/vents.max() # normalisation
# ***********
# * Traçage *
# ***********
courbes = plt.polar(angles, etoile, angles, vents) # tracé
# mise en forme
axes = plt.gca()
courbes[0].set(color="gray")
courbes[1].set(color="b", label="Fréquence des vents")
plt.legend(bbox_to_anchor=(1.45, 1.05), loc="upper right") # affichage à l'extérieur du tracé
axes.set_rticks([0.2, 0.4, 0.6, 0.8, 1]) # graduations radiales
axes.set_thetagrids(angles=radDeg*angles[0:-1], labels=("E", "NE", "N", "NO", "O", "SO", "S", "SE")) # graduations angulaires
plt.title("Rose des vents", va="bottom")
plt.savefig("rose_des_vents.svg", format="svg")
plt.show()
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