一、
1、元胞數組的創建
>> a={'matlab',20;ones(2,3),1:10} a =
'matlab' [ 20] [2x3 double] [1x10 double]>> a={'matlab',20;ones(2,3),1:10}
>> b=[{'matlab'},{20};{ones(2,3)},{1:10}] b =
'matlab' [ 20] [2x3 double] [1x10 double]
a和b是等價的
>> c={10} c = [10]
>> c(2,2)={5}
c =
[10] []
[] [5]
>> c(1,2)={2}
c =
[10] [2]
[] [5]
clear all a={'matlab',20;ones(2,3),1:10} b=[{'matlab'},{20};{ones(2,3)},{1:10}] c={10} c(1,2)={2} c(2,2)={5} c(2,1)=3
賦值需用花括號，下標用小括號。
>> isequal(a,b) ans =
1
>> whos Name Size Bytes Class Attributes a 2x2 596 cell ans 1x1 1 logical b 2x2 596 cell c 2x2 480 cell
>> d=cell(3,3) d = [] [] [] [] [] [] [] [] []
2、元胞數組訪問
>> str=a(1,1) str =
'matlab'
>> class(str) ans = cell
>> str=a{1,1} str = matlab >> class(str) ans =
char
>> a{2,2} ans =
1 2 3 4 5 6 7 8 9 10
>> a(2,2) ans = [1x10 double]
（）和{}有着本質的區別，大括號用於表示元胞的內容，小括號表示指定的元胞。
>> a(2,2)(2) 錯誤: ()-索引必須顯示在索引表達式的最后。 >> a{2,2}(2) ans =
2
>> b=c{2:3,2:3} b =
5
>> b=c(2:3,2:3) b = [5] [6] [8] [9]
b相當於從c中獲取了四個元胞，用a的例子更好理解
>> d=a(2,:) d = [2x3 double] [1x10 double]
>> d=a(2,2) d = [1x10 double] >> d=a{2,2} d =
1 2 3 4 5 6 7 8 9 10
3、元胞數組的刪除和重塑
要刪除單元數組中的行或列，可以用冒號表示單元數組中的行或列，然后對其賦一個空矩陣即可。
>> a={20,'matlab';ones(2,3),1:3}
a =
[ 20] 'matlab'
[2x3 double] [1x3 double]
>> a{1,2}=[]
a =
[ 20] []
[2x3 double] [1x3 double]
>> a{1,1}=[]
a =
[] []
[2x3 double] [1x3 double]
>> a={20,'matlab';ones(2,3),1:3} a = [ 20] 'matlab' [2x3 double] [1x3 double] >> a(2) ans = [2x3 double] >> a(3) ans =
'matlab'
可以看出四個元胞數組的排序
>> a{4}=[] a = [ 20] 'matlab' [2x3 double] [] >> a(4)=[] a = [20] [2x3 double] 'matlab'
刪除一個之后的重新排序。