matlab-结构数组
>> student.name='张三'
student =
name: '张三'
>> student.age=22
student =
name: '张三'
age: 22
>> student.email='dd@11.net'
student =
name: '张三'
age: 22
email: 'dd@11.net'
>> student(2).name='硅'
student =
1x2 struct array with fields:
name
age
email
>> student(2).age=25
student =
1x2 struct array with fields:
name
age
email
>> student(2).email='ssss@111.net'
student =
1x2 struct array with fields:
name
age
email
查询结构数组
>> student
student =
1x2 struct array with fields:
name
age
email
>> fieldnames(student)
ans =
'name'
'age'
'email'
>> student(1)
ans =
name: '张三'
age: 22
email: 'dd@11.net'
>> student(2)
ans =
name: '硅'
age: 25
email: 'ssss@111.net'
>>
得到某字段内容
>> getfield(student(1),'name')
ans =
张三
>> getfield(student(1),'age')
ans =
22
>>
某个字段是否属于这个数组结构
>> isfield(student,'age')
ans =
1
>> isfield(student,'ages')
ans =
0
>>
设置字段内容
>> setfield(student(1),'age',26)
ans =
name: '张三'
age: 26
email: 'dd@11.net'
删除
>> rmfield(student,'email')
ans =
1x2 struct array with fields:
name
age
新建
>> myst=struct('f1','sss','f2','aaa')
myst =
f1: 'sss'
f2: 'aaa'
>>
>> student.name='aaa'
student =
name: 'aaa'
>> zdname='name'
zdname =
name
>> student.(zdname)
ans =
aaa
>>
关于struct
>> mys=struct('name',{'张三','李四'},'age',{28,36})
mys =
1x2 struct array with fields:
name
age
>> mys(1)
ans =
name: '张三'
age: 28
>> mys(2)
ans =
name: '李四'
age: 36
>>
动态字段名
>> aaa='name'
aaa =
name
>> xx=mys.(aaa)
xx =
张三
>> mys.(aaa)
ans =
张三
ans =
李四
>> xx(1)
ans =
张
>> xx(2)
ans =
三
>>
结构数组大小
>> size(mys)
ans =
1 2
>> size(mys(1).name)
ans =
1 2
>>
删除字段
>> rmfield(mys,'name')
ans =
1x2 struct array with fields:
age
>>
增加字段
>> mys(1).class='计数班'
mys =
1x2 struct array with fields:
name
age
class
>> mys
mys =
1x2 struct array with fields:
name
age
class
>>