intnum;
1. fs["Num"]<<num;

vector<int>data;
1. for(inti=0;i<5;i++)
2. data.push_back(i);
3. fs<<"VECTOR"<<"[";//注意要有中括号
4. for(vector<int>::iteratorit=data.begin();it!=data.begin();it++)
5. {
6. fs<<(*it);
7. }
8. fs<<"]";

map<string, data.insert(map<string,int>::value_type("one",1));
1. data.insert(map<string,87); font-weight:bold; background-color:inherit">int>::value_type("two",2));
2. fs<<"MAP"<<"{";//注意要用到大括号
3. for(map<string,87); font-weight:bold; background-color:inherit">int>::iteratorit=data.begin();it!=data.end();it++)
4. fs<<it->first<<it->second;
5. fs<<"}";

MatR=Mat_::eye(3,3);
1. fs<<"Mat"<<R;

二、一般数据的读取

首先需要打开XML文件

FileStoragefs("name.xml",FileStorage::READ);
1. }

intNum=fs["Num"];
1. //or
2. fs["Num"]>>Num;

FileNoden=fs["VECOTR"];
1. if(n.type()!=FileNode::SEQ)
2. cerr<<"VECTORisnotasequence!FAIL"<<endl;
3. for(FileNodeIteratorit=n.begin();it!=n.end();it++)
4. cout<<*it<<endl;
5. }

FileNoden=fs["MAP"];
1. cout<<"one"<<(int)n["one"]<<endl;
2. cout<<"two"<<(int)n["two"]<<endl;

MatR=fs["MAT"];