Python绘制二维曲线的日常应用详解

#!/usr/bin/python



 import numpy as np

 import matplotlib.pyplot as plt

 from xlrd import open_workbook



 def SportLine(excel_file):

     days_year  = []

     target_km  = []

     records   = []

     sum_records = []

     pct_records = []

     target_pct  = []



     fig,axs = plt.subplots(3)



     for i in range(365):

         days_year.append(i)



     for day in days_year:

         target_km.append(float(day)/365.0 * 1000.0)



     # read record data

     book = open_workbook(excel_file)

     sheet = book.sheet_by_name('record')

     rows_num = sheet.nrows

     cols_num = sheet.ncols

     for row_num in range(3,368):

         try:

             records.append(float(sheet.cell(row_num,1).value))

         except:

             records.append(0.0)



     # calculate sum of records

     sum_record = 0.0

     for each_record in records:

         sum_record += each_record

         sum_records.append(sum_record)



     # calculate pct of all

     for each_sum in sum_records:

         pct_records.append(each_sum / 1000.0)



     # calculate target pct

     for day in range(1,366):

         target_pct.append(float(day)/365.0)



     # plot target and sum trend

     ax = axs[0]

     ax.plot(days_year,sum_records)

     ax.plot(days_year,target_km)

     ax.set_title('distance-year-km')

     ax.grid(True)



     # plot record

     ax = axs[1]

     ax.plot(days_year,records)

     ax.set_title('distance-day-km')

     ax.grid(True)



     # plot percentage

     ax = axs[2]

     ax.plot(days_year,pct_records)

     ax.plot(days_year,target_pct)

     ax.set_title('pct-100%')

     ax.grid(True)

     plt.show()



 SportLine('records.xlsx')