isodata算法，针对的是iris数据库，代码可以直接运行，很好用。要是要用于自己的数据库，只需要把文件名，结构体信息修改下即可。-isodata algorithm, the iris against a database, code can be run, it just works. If the database to be used for their own, just to the file name, the structure of information can be mo