标签：关系 span 自动 方差 range pre asi 矩阵 方向
1、快捷键：
2、特殊变量：
3、
4、高维数组：
>> %2行，2列，2页 >> x(1:2,1:2,1)=[1 2;3 4]; >> x(1:2,1:2,2)=[5 6;7 8]; >> x x(:,:,1) = 1 2 3 4 x(:,:,2) = 5 6 7 8
5、定义结构体数组：
>> %直接赋值 >> struct1(1).name=‘xiezhh‘; >> struct1(2).name=‘heping‘; >> struct1(1).age=31; >> struct1(2).age=32; >> struct1 struct1 = 1x2 struct array with fields: name age
>> struct2=struct(‘name‘,{‘xiezhh‘,‘helping‘},‘age‘,{31,32}) struct2 = 1x2 struct array with fields: name age >> struct2(1).name ans = xiezhh
6、定义元胞数组
不同类型，不同大小放一个数组里
>> c1={[1 2;3 4],‘xiezhh‘,[5 6 7],‘emmm‘}
c1 =
[2x2 double] ‘xiezhh‘ [1x3 double] ‘emmm‘
>> c2=cell(2,4) c2 = [] [] [] [] [] [] [] [] >> c2{2,3}=[1 2 3] c2 = [] [] [] [] [] [] [1x3 double] []
>> c1={[1 2;3 4],‘xiezhh‘;[5 6 7],‘emmm‘}
c1 =
[2x2 double] ‘xiezhh‘
[1x3 double] ‘emmm‘
>> c1(2,2)
ans =
‘emmm‘
>> c1{2,2}
ans =
emmm
7、数组转换
>> a=rand(60,50); >> b=mat2cell(a,[10,20,30],[25,25]) b = [10x25 double] [10x25 double] [20x25 double] [20x25 double] [30x25 double] [30x25 double] >> c=cell2mat(b); >> isequal(a,c) ans = 1
>> c={‘zxc‘,‘xian‘,31;‘sdfbn‘,‘shengzhen‘,26}
c =
‘zxc‘ ‘xian‘ [31]
‘sdfbn‘ ‘shengzhen‘ [26]
>> fields={‘Name‘,‘Adress‘,‘Age‘};
>> s=cell2struct(c,fields,2)
s =
2x1 struct array with fields:
Name
Adress
Age
>> cs=struct2cell(s)
cs =
‘zxc‘ ‘sdfbn‘
‘xian‘ ‘shengzhen‘
[ 31] [ 26]
>> isequal(c,cs‘)
ans =
1
8、
标签：关系 span 自动 方差 range pre asi 矩阵 方向
原文地址：https://www.cnblogs.com/ileanj1998/p/9058515.html
