python绘制含有误差线的折线图

数据如上,上中下三层和总层四个表(此处只显示一个)

import pandas as pd

import numpy as np

import matplotlib.pyplot as plt

import matplotlib.font_manager as fm

#读取数据

#利用循环一次做四个图

for i in range(4):


    data = pd.read_excel(r'C:\Users\Administrator\Desktop\图.xlsx',sheet_name = i)

    std_table = data.groupby(by = '上层光截获').std() # 计算标准差

    figdata = data.groupby(by = '上层光截获').mean() #计算均值

    # 绘图

    # 标记样式常用的值有(./,/o/v/^/s/*/D/d/x//h/H/1/2/3/4/_/|)

    plt.errorbar(figdata.columns,figdata.loc['R1D1'],yerr=std_table.loc['R1D1'],fmt='k-o',lw = 2,ecolor='k',elinewidth=1,ms=7,capsize=3)

    plt.errorbar(figdata.columns,figdata.loc['R1D2'],yerr=std_table.loc['R1D2'],fmt='k-x',lw = 2,ecolor='k',elinewidth=1,ms=7,capsize=3)

    plt.errorbar(figdata.columns,figdata.loc['R1D3'],yerr=std_table.loc['R1D3'],fmt='k-d',lw = 2,ecolor='k',elinewidth=1,ms=7,capsize=3)

    plt.errorbar(figdata.columns,figdata.loc['R2D1'],yerr=std_table.loc['R2D1'],fmt='k-s',lw = 2,ecolor='k',elinewidth=1,ms=7,capsize=3)

    plt.errorbar(figdata.columns,figdata.loc['R2D2'],yerr=std_table.loc['R2D2'],fmt='k-p',lw = 2,ecolor='k',elinewidth=1,ms=7,capsize=3)

    plt.errorbar(figdata.columns,figdata.loc['R2D3'],yerr=std_table.loc['R2D3'],fmt='k-^',lw = 2,ecolor='k',elinewidth=1,ms=7,capsize=3)

    # 设置坐标轴标签文本

    name=['Upper ','Middle ','lower ','Total ','上层','中层','下层','总']

    Songti = fm.FontProperties(fname='C:\Windows\Fonts\simsun.ttc')

    plt.xlabel('Growth stage\n生育阶段', fontproperties=Songti, fontsize=14)

    plt.ylabel(name[i]+'light interception\n'+name[i+4]+'光截获', fontproperties=Songti, fontsize=14)

    # # 创建字体,设置图例 windows自带字体路径

    myfont = fm.FontProperties(fname=r'C:\Windows\Fonts\STKAITI.ttf',

                              size=10)

    plt.legend(prop=myfont, fontsize=18,ncol=2,edgecolor='w')#nco列数

    plt.tight_layout() #防止保存时大小不合适

    plt.savefig(r'C:\Users\Administrator\Desktop\{}light interception.jpg'.format(name[i]), dpi=1000)

    plt.close()



结果之一如上

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