[Python] MatplotLib

import matplotlib.pyplot as plt
import numpy as np

plt.plot([1,2,3,4])

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[<matplotlib.lines.Line2D at 0xa7b8f70>]

plt.plot([1,2,3,4], [1,4,9,16])
plt.axis([0,6,0,20])

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[0, 6, 0, 20]

t = np.arange(0, 5., 0.2)
plt.plot(t, t, 'r--', t, t**2, 'bs', t, t**3, 'g^')

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[<matplotlib.lines.Line2D at 0x586b930>,
 <matplotlib.lines.Line2D at 0x586ba30>,
 <matplotlib.lines.Line2D at 0x586baf0>]

n = 20
x = np.random.rand(n)
y = np.random.rand(n)
plt.scatter(x, y, s=100, c='#a37ff1', marker='D')

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<matplotlib.collections.PathCollection at 0xac83170>

np.random.seed(1)
n = 20
x = np.random.rand(n)
y = np.random.rand(n)
plt.plot(x, y, 'D', c='#a37ff1', markersize=10)

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[<matplotlib.lines.Line2D at 0x5b69e50>]

np.random.seed(1)
n = 20
x = np.random.rand(n)
y = np.random.rand(n)
plt.scatter(x, y, s=100, c='#a37ff1', marker='D')

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<matplotlib.collections.PathCollection at 0x5a4dd50>

np.random.seed(19680801)
n = 50
x = np.random.rand(n)
y = np.random.rand(n)
colors = np.random.rand(n)
area = (30 * np.random.rand(n))**2
plt.scatter(x, y, s=area, c=colors, alpha=0.5)

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<matplotlib.collections.PathCollection at 0x58c2a90>

ind = np.arange(4)
y = [4,6,5,8]
plt.bar(ind, y, width=0.3, bottom=5)

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<BarContainer object of 4 artists>

n = 5
menMeans = (20, 35, 30, 35, 27)
womenMeans = (25, 32, 34, 20, 27)
ind = np.arange(n)
width = 0.35
p1 = plt.bar(ind-width/2, menMeans, width, color='#d62728')
p2 = plt.bar(ind+width/2, womenMeans, width)
plt.ylabel('Scores')
plt.title('Scores by group and gender')
plt.xticks(ind, ('G1', 'G2', 'G3', 'G4', 'G5'))
plt.yticks(np.arange(0, 81, 10))
plt.legend((p1, p2), ('Men', 'Women'))

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<matplotlib.legend.Legend at 0xd71c3b0>

lables = 'Frogs', 'Hogs', 'Dogs', 'Logs'
sizes = 15, 30, 45, 10
explode = 0, 0.1, 0, 0
%matplotlib inline
plt.pie(sizes, explode=explode, labels=lables, autopct='%1.1f%%',
       shadow=True, startangle=90)
plt.axis('equal')
plt.legend()

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---------------------------------------------------------------------------

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NameError                                 Traceback (most recent call last)

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<ipython-input-1-ecc449048141> in <module>
      3 explode = 0, 0.1, 0, 0
      4 
----> 5 plt.figure(figsize=(12, 3))
      6 plt.pie(sizes, explode=explode, labels=lables, autopct='%1.1f%%',
      7        shadow=True, startangle=90)

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NameError: name 'plt' is not defined

v = np.random.uniform(0., 10., 4)
plt.uniform(v)

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---------------------------------------------------------------------------

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AttributeError                            Traceback (most recent call last)

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<ipython-input-18-7aed01b667b0> in <module>
      1 v = np.random.uniform(0., 10., 4)
----> 2 plt.uniform(v)

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AttributeError: module 'matplotlib.pyplot' has no attribute 'uniform'

plt.subplot()