一、
1、元胞数组的创建
>> 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是等价的
>> 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
赋值需用花括号，下标用小括号。
>> 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、元胞数组访问
>> 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{}有着本质的区别，大括号用于表示元胞的内容，小括号表示指定的元胞。
>> a(2,2)(2) 错误: ()-索引必须显示在索引表达式的最后。 >> 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相当于从c中获取了四个元胞，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、元胞数组的删除和重塑
要删除单元数组中的行或列，可以用冒号表示单元数组中的行或列，然后对其赋一个空矩阵即可。
>> 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'
可以看出四个元胞数组的排序
>> a{4}=[] a = [ 20] 'matlab' [2x3 double] [] >> a(4)=[] a = [20] [2x3 double] 'matlab'
删除一个之后的重新排序。