<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">i everyone i have this code :
<br class=""><pre class="">import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl
# choix du style pour l'affichage des équations
plt.style.use('bmh')
# dimensions de la fenetre
(L,l)=(12,8)
Linch,linch=(L/2.54,l/2.54)
fig, lafigure = plt.subplots(figsize=(Linch,linch))
# choix de la police par défaut
mpl.rcParams['font.family'] = 'STIXGeneral'
plt.rcParams["font.size"] = 10
# liste X des abscisses pour le tracé
X = np.linspace(-np.pi, np.pi, 256,endpoint=True)
# fonctions à tracer f(X)
C,S = np.cos(X), np.sin(X)
# tracé des courbes
lafigure.plot(X, C, color="blue", linewidth=1.0, linestyle="-")
lafigure.plot(X, S, color="green", linewidth=1.0, linestyle="-")
# légendes
eq=(r"$\dfrac{1}{2+\frac{2}{xy}}fontof\mathit{equation}$font of text")
plt.text(0, 0.2, eq, ha='left', va='center', alpha=1)
# graduations sur les axes
plt.xticks([-np.pi, -np.pi/2, 0, np.pi/2, np.pi], [r'$-\pi$', r'$-\pi/2$', r'$0$', r'$+\pi/2$', r'$+\pi$'])
plt.yticks([-1, 0, +1], [r'$-1$', r'$0$', r'$+1$'])
plt.axis('on')
lafigure.spines['right'].set_visible(True)
# segments
lafigure.plot([-3,-2,-1,0,1,2,3],[0.1,-0.1,0.1,-0.1,0.1,-0.1,0.1], color ='blue', linewidth=1, linestyle="-")
# petits ronds
t=2*np.pi/3
lafigure.scatter([t],[np.cos(t)], 50, color ='blue')
lafigure.scatter([t],[np.sin(t)], 50, color ='red')
lafigure.grid('true')
#lafigure.axis(True)
plt.savefig("bordas/Matplotlib_essais/9par6.png", dpi=288)
</pre><br class="">1) if i write alos this part of code, the resulting picture does not show the graph any longer, would you have an idea why ?
<br class=""><pre class=""># labels sur les axes perturbe les échelles : ne pas utiliser
#plt.xticks(np.linspace(-4,5,9,endpoint=False))
#plt.yticks(np.linspace(-1,2,7,endpoint=True))
</pre><br class="">2) i dont really understand why sometimes i have to write
plt.something, and sometimes, thougt, only lafigure.something works ???
<br class=""><br class="">3) i have read and read these pages :
<br class=""><a href="https://matplotlib.org/users/pyplot_tutorial.html" target="_top" rel="nofollow" link="external" class="">https://matplotlib.org/users/pyplot_tutorial.html</a><br class=""><a href="http://python-simple.com/python-matplotlib/configuration-axes.php" target="_top" rel="nofollow" link="external" class="">http://python-simple.com/python-matplotlib/configuration-axes.php</a><br class=""><a href="http://matplotlib.org/examples/pylab_examples/spine_placement_demo.html" target="_top" rel="nofollow" link="external" class="">http://matplotlib.org/examples/pylab_examples/spine_placement_demo.html</a><br class=""><a href="https://matplotlib.org/api/pyplot_api.html" target="_top" rel="nofollow" link="external" class="">https://matplotlib.org/api/pyplot_api.html</a><br class=""><br class="">and
i cant manage to find how to display/hide the axis (x axis and y axis)
because the word "axis" seems to be assigned to parameter the window...
<br class=""><br class="">thansk for your help, it is less urgent for me, i can start working without teses answers
<br class=""><br class="">Vincent
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<br class=""> Vincent Douce
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