[人工智能]使用matplotlib绘制图表

1、绘制堆积图
使用pyplot的stackplot（）函数可以快速绘制堆积面积图

import numpy as np
import matplotlib.pyplot as plt
x = np.arange(6)
y1 = np.array([1,4,3,5,6,7])
y2 = np.array([1,3,4,2,7,6])
y3 = np.array([3,4,3,6,5,5])
plt.stackplot(x,y1,y2,y3)
plt.title(2020080603035)
plt.show()

2、绘制自方图
使用pypolt的his（）函数可以快速绘制直方图

random_state = np.random.RandomState(19680801)
random_x = random_state.randn(10000)
plt.hist(random_x, bins=25)
plt.title(2020080603035)
plt.show()

3、绘制园或圆环图
使用pylon的pie（）函数 可以快速绘制园或圆环图

import numpy as np
import matplotlib.pyplot as plt
data = np.array([20,50,10,15,30,55])
pie_labels = np.array(['A','B','C','D','E','F'])
plt.pie(data,radius=1.5,labels=pie_labels,autopct='%3.1f%%')
plt.title(2020080603035)
plt.show()

data = np.array([20,50,10,15,30,55])
pie_labels = np.array(['A','B','C','D','E','F'])
plt.pie(data,radius=1.5,wedgeprops={'width':0.7},labels=pie_labels,autopct='%3.1f%%',pctdistance=0.75)
plt.title(2020080603035)
plt.show()

import matplotlib.pyplot as plt
import matplotlib as mpl
mpl.rcParams['font.sans-serif'] = ['SimHei']
mpl.rcParams['axes.unicode_minus'] = False
kinds = ['购物', '人情往来', '餐饮美食', '通信物流', '生活日用',
         '交通出行', '休闲娱乐', '其他']
money_scale = [800 / 3000, 100 / 3000, 1000 / 3000, 200 / 3000,
               300 / 3000, 200 / 3000, 200 / 3000, 200 / 3000]
dev_position = [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]
plt.pie(money_scale, labels=kinds, autopct='%3.1f%%', shadow=True,
        explode=dev_position, startangle=90)
plt.title(2020080603035)
plt.show()

4、绘制散点图或气泡图
使用pylon的scatter（）函数 可以快速绘制散点图或气泡图

num = 50
x = np.random.rand(num)
y = np.random.rand(num)
plt.title(2020080603035)
plt.scatter(x,y)

num = 50
x = np.random.rand(num)
y = np.random.rand(num)
area = (30*np.random.rand(num))**2
plt.title(2020080603035)
plt.scatter(x,y,s=area)

5、绘制箱形图
使用pylon的boxplot（）函数 可以快速绘制箱形图

import numpy as np
import matplotlib.pyplot as plt
plt.rcParams['font.family'] = 'SimHei'
plt.rcParams['axes.unicode_minus'] = False
data_2018 = np.array([5200, 5254.5, 5283.4, 5107.8, 5443.3, 5550.6, 
                      6400.2, 6404.9, 5483.1, 5330.2, 5543, 6199.9])
data_2017 = np.array([4605.2, 4710.3, 5168.9, 4767.2, 4947, 5203, 
                      6047.4, 5945.5, 5219.6, 5038.1, 5196.3, 5698.6])
# 绘制箱形图
plt.boxplot([data_2018, data_2017], labels=('2018年', '2017年'),
            meanline=True, widths=0.5, vert=False, patch_artist=True)
plt.title(2020080603035)
plt.show()

6、绘制雷达图
使用pylon的polar（）函数 可以快速绘制雷达图

import numpy as np
import matplotlib.pyplot as plt
plt.rcParams['font.family'] = 'SimHei'
plt.rcParams['axes.unicode_minus'] = False
dim_num = 6
data = np.array([[0.40, 0.32, 0.35, 0.30, 0.30, 0.88],
                 [0.85, 0.35, 0.30, 0.40, 0.40, 0.30],
                 [0.43, 0.89, 0.30, 0.28, 0.22, 0.30],
                 [0.30, 0.25, 0.48, 0.85, 0.45, 0.40],
                 [0.20, 0.38, 0.87, 0.45, 0.32, 0.28],
                 [0.34, 0.31, 0.38, 0.40, 0.92, 0.28]])
angles = np.linspace(0, 2 * np.pi, dim_num, endpoint=False)
angles = np.concatenate((angles, [angles[0]]))
data = np.concatenate((data, [data[0]]))
radar_labels = ['研究型(I)', '艺术型(A)', '社会型(S)', 
                '企业型(E)', '传统型(C)', '现实型(R)']
radar_labels = np.concatenate((radar_labels, [radar_labels[0]]))
plt.polar(angles, data)
plt.thetagrids(angles * 180/np.pi, labels=radar_labels)
plt.fill(angles, data, alpha=0.25)
plt.title(2020080603035)
plt.show()

7、绘制误差棒图
使用pylon的errorbar（）函数 可以快速绘制误差棒图

import numpy as np
import matplotlib.pyplot as plt
x = np.arange(5)
y = (25, 32, 34, 20, 25)
y_offset = (3, 5, 2, 3, 3)
plt.errorbar(x, y, yerr=y_offset, capsize=3, capthick=2)
plt.title(2020080603035)
plt.show()

import numpy as np
import matplotlib.pyplot as plt
plt.rcParams['font.family'] = 'SimHei'
plt.rcParams['axes.unicode_minus'] = False
# 准备 x 轴和 y 轴的数据
x = np.arange(3)
y1 = np.array([2.04, 1.57, 1.63])
y2 = np.array([1.69, 1.61, 1.64])
y3 = np.array([4.65, 4.99, 4.94])
y4 = np.array([3.39, 2.33, 4.10])
# 指定测量偏差
error1 = [0.16, 0.08, 0.10]
error2 = [0.27, 0.14, 0.14]
error3 = [0.34, 0.32, 0.29]
error4 = [0.23, 0.23, 0.39]
bar_width = 0.2
# 绘制柱形图
plt.bar(x, y1, bar_width)
plt.bar(x + bar_width, y2, bar_width, align="center",
        tick_label=["春季", "夏季", "秋季"])
plt.bar(x + 2*bar_width, y3, bar_width)
plt.bar(x + 3*bar_width, y4, bar_width)
# 绘制误差棒 : 横杆大小为 3,  线条宽度为 3,  线条颜色为黑色, 数据点标记为像素点
plt.errorbar(x, y1, yerr=error1, capsize=3, elinewidth=2, fmt=' k,')
plt.errorbar(x + bar_width, y2, yerr=error2, capsize=3, elinewidth=2, fmt='k,')
plt.errorbar(x + 2*bar_width, y3, yerr=error3, capsize=3, elinewidth=2, fmt='k,')
plt.errorbar(x + 3*bar_width, y4, yerr=error4, capsize=3, elinewidth=2, fmt='k,')
plt.title(2020080603035)
plt.show()