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ENVI Pyramid Creation Utility
This utility supports all versions of ENVI5 (v5.0, v5.1,v5.2, etc.). It is recommended that you run this utility as its own stand-alone program, either by double-clicking on the "ENVI_Pyramid_Creation_Utility.sav" file or manually execute the following statements at the IDL command prompt:
IDL> file=Dialog_Pickfile(Title='Select "ENVI_Pyramid_Creation_Utility.sav"', Filter='*.sav')
IDL> Restore, file
IDL> ENVI_Pyramid_Creation_Utility
Alternatively, on Windows you can place the "ENVI_Pyramid_Creation_Utility.sav" file in the extensions installation subfolder and launch this utility from the ENVI5 application Toolbox (not supported on Linux or Mac).
The ENVI software creates and uses pyramid files to improve the display performance of large raster datasets. Pyramid files contain a copy of the raster data at various reduced resolutions in order to enhance display at different zoom levels. The pyramid files improve raster display performance by reducing the resampling required when displaying large portions of a raster at low resolution. Pyramid files for the ENVI software can be identified by the ".enp" file extension.
Author: Adam O'Connor