[已解决]用matplotlib绘制的条形图，条形重合

Jay8

import pandas as pd
import matplotlib.pyplot as plt


phones = pd.read_excel('D:\测试.xlsx',)


plt.rcParams ['font.sans-serif'] = ['SimHei']
plt.rcParams ['axes.unicode_minus'] = False


x = phones['品牌']
y = phones['淘宝销量']
z = phones['京东销量']


plt.bar(x,y,color='g',label="淘宝销量",alpha=0.5,width=0.4)
plt.bar(x,z,color='b',label='京东销量',width=0.4)

plt.legend() 
plt.show()

excel表就是以下这些内容
品牌        淘宝销量        京东销量
小米            9                   8
荣耀           20                   30
华为            5                   4


代码运行后出现的图表两条柱状是重合的，
直接在x后加数字会报错TypeError: can only concatenate str (not "float") to str
请问应该用什么方法才能将两个条形分开，
求解答

最佳答案

月排行榜 / 总排行榜

suchocolate

2021-12-10 16:07:11

直接抄官网

import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False

labels = ['小米', '荣耀', '华为']
taobao = [9, 20, 5]
jingdong = [8, 30, 4]
x = [1, 2, 3]
width = 0.35  # the width of the bars

fig, ax = plt.subplots()
rects1 = ax.bar([i - width / 2 for i in x], taobao, width, label='淘宝')
rects2 = ax.bar([i + width / 2 for i in x], jingdong, width, label='京东')

# Add some text for labels, title and custom x-axis tick labels, etc.
ax.set_ylabel('销量')
ax.set_title('销量对比')
ax.set_xticks(x)
ax.set_xticklabels(labels)
ax.legend()


def autolabel(rects):
    """Attach a text label above each bar in *rects*, displaying its height."""
    for rect in rects:
        height = rect.get_height()
        ax.annotate('{}'.format(height),
                    xy=(rect.get_x() + rect.get_width() / 2, height),
                    xytext=(0, 3),  # 3 points vertical offset
                    textcoords="offset points",
                    ha='center', va='bottom')


autolabel(rects1)
autolabel(rects2)

fig.tight_layout()

plt.show()

跳转到最佳答案楼层

suchocolate

直接抄官网

import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False

labels = ['小米', '荣耀', '华为']
taobao = [9, 20, 5]
jingdong = [8, 30, 4]
x = [1, 2, 3]
width = 0.35  # the width of the bars

fig, ax = plt.subplots()
rects1 = ax.bar([i - width / 2 for i in x], taobao, width, label='淘宝')
rects2 = ax.bar([i + width / 2 for i in x], jingdong, width, label='京东')

# Add some text for labels, title and custom x-axis tick labels, etc.
ax.set_ylabel('销量')
ax.set_title('销量对比')
ax.set_xticks(x)
ax.set_xticklabels(labels)
ax.legend()


def autolabel(rects):
    """Attach a text label above each bar in *rects*, displaying its height."""
    for rect in rects:
        height = rect.get_height()
        ax.annotate('{}'.format(height),
                    xy=(rect.get_x() + rect.get_width() / 2, height),
                    xytext=(0, 3),  # 3 points vertical offset
                    textcoords="offset points",
                    ha='center', va='bottom')


autolabel(rects1)
autolabel(rects2)

fig.tight_layout()

plt.show()

Jay8

suchocolate 发表于 2021-12-10 16:07
直接抄官网

感谢回答