TNTgis - Raster Linear Combinations Coefficients


The information on this page replaces the Compute TM Tasseled Cap Indices exercise steps in the Combining Rasters tutorial (page 11).

The User–Defined Linear Image Combination process uses an array of coefficients to perform a linear combination operation on the input image bands. After adding the input rasters in the correct order, manually set up the array or use the Open Array option to choose a previously saved .arr file. The array can be saved and re–used to quickly and accurately set up future operations. In this way you can set up, modify, and save the coefficients for your linear equations.

The coefficient files listed here are provided as–is. Use them to more easily set up coefficients for the operation. Note that Tasseled Cap transformation requires coefficients that are derived for a specific satellite. The file includes:

  • tasseled_cap_cbers_02B.arr
  • tasseled_cap_landsat7_etm_at_satellite_reflectance.arr
  • tasseled_cap_landsat8_etm_at_satellite_reflectance.arr
  • tasseled_cap_landsatMSS_kauth_thomas.arr
  • tasseled_cap_landsatTM.arr
  • tasseled_cap_landsatTM_surface_reflectance_crist1985.arr
  • tasseled_cap_landsatTM_TNTmips2014.arr
  • tasseled_cap_landsatTM_wikipedia2020.arr
  • tasseled_cap_landsat_all_forest_surface_reflectance.arr
  • tasseled_cap_QuickBird2s.arr
  • tasseled_cap_sentinel2.arr
  • tasseled_cap_thematic_mapper_crist_cicone.arr
  • tasseled_cap_worldview.arr