1.柱狀圖

程序示例：

'''1.簡單示例'''
import matplotlib.pyplot as plt

num_list = [1.5, 0.6, 7.8, 6]

plt.bar(range(len(num_list)), num_list)
plt.show()

'''2.添加顏色'''
import matplotlib.pyplot as plt

num_list = [1.5, 0.6, 7.8, 6]

plt.bar(range(len(num_list)), num_list, color='rgbc')   # 每個柱子用不同顏色
plt.show()

'''3.更改x軸的顯示'''
import matplotlib.pyplot as plt
name_list = ['Monday', 'Tuseday', 'Friday', 'Sunday']
num_list = [1.5, 0.6, 7.8, 6]

plt.bar(range(len(num_list)), num_list, color='rgb', tick_label=name_list)   # 每個柱子用不同顏色
plt.show()

'''4.堆疊柱狀圖，添加圖例'''
import matplotlib.pyplot as plt
name_list = ['Monday', 'Tuseday', 'Friday', 'Sunday']
num_list = [1.5, 0.6, 7.8, 6]
num_list2 = [1, 2, 2, 1]
plt.bar(range(len(num_list)), num_list, tick_label=name_list,label='boys')
plt.bar(range(len(num_list)), num_list, tick_label=name_list, bottom=num_list, label='girls')
plt.legend(loc='best')
plt.show()

'''5.橫向柱狀圖'''
import matplotlib.pyplot as plt
name_list = ['Monday', 'Tuseday', 'Friday', 'Sunday']
num_list = [1.5, 0.6, 7.8, 6]
plt.barh(range(len(num_list)), num_list, tick_label=name_list)
plt.show()

'''6.並排柱狀圖，添加圖例'''
import matplotlib.pyplot as plt
name_list = ['Monday', 'Tuseday', 'Friday', 'Sunday']
num_list = [1.5, 0.6, 7.8, 6]
num_list2 = [1, 2, 2, 1]

x = list(range(len(num_list)))
total_width = 0.8
n = 2
width = total_width / n
plt.bar(x, num_list, width=width, label='boys')
for i in range(len(x)):
    x[i] = x[i] + width
plt.bar(x, num_list2, width=width, tick_label=name_list, label='girls')
plt.legend(loc='best')
plt.show()

2.餅狀圖

程序示例

'''1.簡單餅狀圖示例'''
import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']    #正常顯示中文

labels = 'A','B','C','D'
sizes = [10,20,30,40]

plt.pie(sizes, labels = labels)
plt.title('簡單餅狀圖')
plt.show()

'''2.設置餅到中心的位置'''
import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']    #正常顯示中文

labels = 'A','B','C','D'
sizes = [10,20,30,40]
explode = (0,0,0.1,0)   # 第三塊餅離開中心位置

plt.pie(sizes, labels = labels, explode=explode)
plt.title('簡單餅狀圖')
plt.show()

'''3.添加顏色屬性'''
import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']    #正常顯示中文

labels = 'A','B','C','D'
sizes = [10,20,30,40]
explode = (0,0,0.1,0)   # 第三塊餅離開中心位置
colors = ['r', 'g', 'b', 'c']
plt.pie(sizes, labels = labels, explode=explode, colors=colors)
plt.title('簡單餅狀圖')
plt.show()

'''4.在餅中顯示比例autopct'''
import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']    #正常顯示中文

labels = 'A','B','C','D'
sizes = [10,20,30,40]
explode = (0,0,0.1,0)   # 第三塊餅離開中心位置
colors = ['r', 'g', 'b', 'c']
plt.pie(sizes, labels = labels, explode=explode, colors=colors, autopct='%1.2f%%')
plt.title('簡單餅狀圖')
plt.show()

'''5.調整餅的比例'''
import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']    #正常顯示中文

labels = 'A','B','C','D'
sizes1 = [10,20,30,40]
sizes2 = [0.1,0.2,0.3,0.4]
sizes3 = [0.1,0.2,0.3,0.7]
sizes4 = [0.1,0.2,0.3,0.2]
explode = (0,0,0.1,0)   # 第三塊餅離開中心位置
colors = ['r', 'g', 'b', 'c']
plt.subplot(2,2,1)
plt.pie(sizes1, labels = labels, explode=explode, colors=colors, autopct='%1.2f%%')
plt.title('簡單餅狀圖>1')
plt.subplot(2,2,2)
plt.pie(sizes2, labels = labels, explode=explode, colors=colors, autopct='%1.2f%%')
plt.title('簡單餅狀圖=1')
plt.subplot(2,2,3)
plt.pie(sizes3, labels = labels, explode=explode, colors=colors, autopct='%1.2f%%')
plt.title('簡單餅狀圖>1')
plt.subplot(2,2,4)
plt.pie(sizes4, labels = labels, explode=explode, colors=colors, autopct='%1.2f%%')
plt.title('簡單餅狀圖<1')
plt.show()

'''6.添加圖例'''
import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']    #正常顯示中文

labels = 'A','B','C','D'
sizes = [10,20,30,40]
explode = (0,0,0.1,0)   # 第三塊餅離開中心位置
colors = ['r', 'g', 'b', 'c']
plt.pie(sizes, labels = labels, explode=explode, colors=colors, autopct='%1.2f%%')
plt.title('簡單餅狀圖')
plt.legend(loc='best',fontsize=8,borderaxespad=0.3)
plt.show()