一、
1、元胞数组的创建
>> a={'matlab',;ones(,),:}
a =
'matlab' [ ]
[2x3 double] [1x10 double]>> a={'matlab',;ones(,),:}
>> b=[{'matlab'},{};{ones(,)},{:}]
b =
'matlab' [ ]
[2x3 double] [1x10 double]
a和b是等价的
>> c={}
c =
[]
>> c(2,2)={5}
c =
[10] []
[] [5]
>> c(1,2)={2}
c =
[10] [2]
[] [5]
clear all
a={'matlab',;ones(,),:}
b=[{'matlab'},{};{ones(,)},{:}]
c={}
c(,)={}
c(,)={}
c(,)=
赋值需用花括号，下标用小括号。
>> isequal(a,b) ans =
>> whos
Name Size Bytes Class Attributes a 2x2 cell
ans 1x1 logical
b 2x2 cell
c 2x2 cell
>> d=cell(,)
d =
[] [] []
[] [] []
[] [] []
2、元胞数组访问
>> str=a(,)
str =
'matlab'
>> class(str)
ans =
cell
>> str=a{,}
str =
matlab
>> class(str)
ans =
char
>> a{,}
ans =
>> a(,)
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(,)()
错误: ()-索引必须显示在索引表达式的最后。 >> a{,}() ans =
>> b=c{:,:}
b =
>> b=c(:,:)
b =
[] []
[] []
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(,:)
d =
[2x3 double] [1x10 double]
>> d=a(,)
d =
[1x10 double]
>> d=a{,}
d =
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={,'matlab';ones(,),:}
a =
[ ] 'matlab'
[2x3 double] [1x3 double]
>> a()
ans =
[2x3 double]
>> a()
ans =
'matlab'
可以看出四个元胞数组的排序
>> a{}=[]
a =
[ ] 'matlab'
[2x3 double] []
>> a()=[]
a =
[] [2x3 double] 'matlab'
删除一个之后的重新排序。