Variables to Bands Pairings to Bands Pairings Exp:b1-b2 Exp:b1-b2 Variables used in expression B1-T Band 4 (08 used in expression Availablc。Bands List Available Bands List can tmr.img TW Band 1 (0.4850) TBa 0.4850 mBd30.6600 TM Band 4 (0.8300) TH Band 4 (.8300 Tma72250 日Tnd722150 Map Variable to Input File Map Variable to Input File Spatial Subset Full Scene 步骤3：给B1、B2分别赋予波段 Output Result to File C Hemory Enter Output Filenane ChooseCompress 一步骤4，输入文件名，保存 OK Queue Cancel Xelp clear OK Queue Caneel Kelp clear 方法2：Envi长条菜单栏Transform ENVI File Basic Tools Classification Filter Spectral Map Image Sharpening Band Ratios 步骤1 Prineipal Components Rotation Color Transforms Decorrelation stretch Photogr aphic Stretch Saturation Stretch Synthetic Color Image NDVI (Vegetation Index) Tasseled Cap 方法 2：Envi 长条菜单栏 Transform