excel数据读取函数
[num, txt, raw, X] = xlsread(filename, sheet, range)
filename, sheet, range
文件名，sheet名、范围
num, txt, raw, X 输出
excel数据写入函数：
[status, message] =xlswrite(filename, M, sheet, range)
filename, M, sheet, range
文件名，数据、sheet名、范围
excel数据读取函数
[num, txt, raw, X] = xlsread(filename, sheet, range)
filename, sheet, range
文件名，sheet名、范围
num, txt, raw, X 输出
excel数据写入函数：
[status, message] =xlswrite(filename, M, sheet, range)
filename, M, sheet, range
文件名，数据、sheet名、范围