IDL编程：tif图像批量layerstacking，并保留原有地图投影。使用时只需要修改输入和输出路径。-IDL programming: tif image batch layerstacking, and retain the original map projection. Only need to modify the input and output paths use.

IDL进行Layer stacking，合成多波段数据。(IDL to layer stacking)

IDL批量实现影像多单波段合成LayerStacking，并进行滤波SavitzkyGolayFilter，然后再拆分为单波段(IDL batch realizes image multi-single band synthesis LayerStacking, filters SavitzkyGolayFilter, and then splits into single bands)