Matplotlib: graphe 2D: Difference between revisions
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Wiki-cours (talk | contribs) (Created page with "== Création d'un graphe 2D == On utilise la bibliothèque '''Pylab''' de matplotlib <source lang="py"> from pylab import * #t = arange(0.0, 2.01, 0.01) #s = sin(pi*t)*exp(-...") |
Wiki-cours (talk | contribs) |
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from pylab import * | from pylab import * | ||
f = lambda x: sin(x*pi) | f = lambda x: sin(x*pi) | ||
t = [ 0.01*i for i in range(201) ] | t = [ 0.01*i for i in range(201) ] | ||
Revision as of 10:41, 16 July 2015
Création d'un graphe 2D
On utilise la bibliothèque Pylab de matplotlib
from pylab import *
f = lambda x: sin(x*pi)
t = [ 0.01*i for i in range(201) ]
s = map(f,t)
plot(t, s)
xlabel('temps (s)')
ylabel('Tension (mV)')
title('Signal sinusoïdal')
grid(True)
show()
Il est en général plus simple de générer les tableaux avec numpy, la fonction plot utilisant la classe array
import numpy as np
from pylab import *
t = np.arange(0.0, 2.01, 0.01)
s = sin(pi*t)*exp(-t)
plot(t, s)
xlabel('temps (s)')
ylabel('Tension (mV)')
title('Signal sinusoïdal')
grid(True)
show()