第二種方法，就是把字符轉化為數字，使用函數str2num
xlsread的使用
EXAMPLES:
1. Default operation:
NUMERIC = xlsread(FILE);
[NUMERIC,TXT]=xlsread(FILE);
[NUMERIC,TXT,RAW]=xlsread(FILE);
2. Get data from the default region:
NUMERIC = xlsread('c:\matlab\work\myspreadsheet')
3. Get data from the used area in a sheet other than the first sheet:
NUMERIC = xlsread('c:\matlab\work\myspreadsheet','sheet2')
4. Get data from a named sheet:
NUMERIC = xlsread('c:\matlab\work\myspreadsheet','NBData')
5. Get data from a specified region in a sheet other than the first
sheet:
NUMERIC = xlsread('c:\matlab\work\myspreadsheet','sheet2','a2:j5')
6. Get data from a specified region in a named sheet:
NUMERIC = xlsread('c:\matlab\work\myspreadsheet','NBData','a2:j5')
7. Get data from a region in a sheet specified by index:
NUMERIC = xlsread('c:\matlab\work\myspreadsheet',2,'a2:j5')
8. Interactive region selection:
NUMERIC = xlsread('c:\matlab\work\myspreadsheet',-1);
You have to select the active region and the active sheet in the
EXCEL window that will come into focus. Click OK in the Data
Selection Dialog when you have finished selecting the active region.