pm2.5的处理以及作图

this file is important

说明：  全屏幕对比查看图像 支持鼠标放大、缩小和平移； 支持键盘移动。(Full screen contrast view image Support mouse zoom in, zoom out and pan; Keyboard movement is supported.)

根据影像的像素数及单个栅格的面积，求出栅格影像的面积

简单的程序，如何读取hdf文件，希望对大家有帮助。需要帮忙可以通过联系方式联系我(A simple program, how to read the HDF file, I hope to help you. If you need help, you can contact me by contact.)

IDL中的批量重采样，可以省很多时间，根据自己的需求，采样成不同分辨率的图像。(IDL in batch resampling, you can save a lot of time, according to their needs, a different sampling resolution images.)

说明：  《遥感数字图象分析与编程》一书的课程ppt，附有详细IDL开发及MALTAB开发方法和例子。(&quot Remote sensing digital image analysis and programming,&quot a book of course ppt, with detailed IDL development and MALTAB development methods and examples.)

密度分割程序，利用ENVI二次开发技术，进行批处理。(calculate slope)

说明：  裁剪shape文件，使用idl编程实现，就是一个功能，编译以后可以直接调用这个函数(Clipping shape file, using idl programming, is a function, after compiling can directly call this function)

IDL编写的以时间为变量的散点图代码,值得新手学习(IDL prepared time-variable scatter plot code, novice worth learning)

根据影像的像素数及单个栅格的面积，求出栅格影像的面积