文件是基于IDL开发环境的读取EOS的HDF文件格式的代码，并且提供了在IDL中实现循环、判断等操作，以及以一定的格式写文件的方法。-document is based on the IDL development environment EOS read the HDF file format code, and provided the IDL achieve cycle, operational judgment, and in a certain format documents.