python读取并定位excel数据坐标系详解

import xlrd
import matplotlib.pyplot as plt
import numpy as np
#打开文件
data = xlrd.open_workbook(r'testExcelData.xlsx')
#获取表格数目
nums = len(data.sheets())
for i in range(nums):
#根据sheet顺序打开sheet
sheet1 = data.sheets()[i]
#根据sheet名称获取
sheet2 = data.sheet_by_name('Sheet1')
#获取sheet（工作表）行（row）、列（col）数
nrows = sheet2.nrows #行
ncols = sheet2.ncols #列
x_mat = []
y_mat = []
for i in range(nrows):
print(sheet2.row_values(i))
x_mat.append(sheet2.row_values(i)[0])
y_mat.append(sheet2.row_values(i)[1])
#print(x_mat)
#print(y_mat)
plt.scatter(x_mat,y_mat)
for x, y in zip(x_mat, y_mat):
plt.text(x, y, (x, y), ha="center", va="bottom", fontsize=10)
plt.show()

[1.0, 2.0]
[6.0, 2.0]
[3.0, 3.0]
[4.0, 5.0]
[8.0, 8.0]
[6.0, 6.0]
[7.0, 9.0]