Available with Image Analyst license.
Available with Spatial Analyst license.
Overview
Calculates the base 2 logarithm of each pixel in a raster.
Notes
The input Raster can be an integer or a floating point. The output of this tool is always a floating point, regardless of the input type.
Input values that are 0 or negative will be NoData in the output raster.
If the input is a multiband raster, the output will be a multiband raster. The function will perform the operation on each band in the input.
Parameters
Parameter name  Description 

Raster  Input values for which to find the base 2 logarithm. 
Extent Type  Choose which extent should be used in the output raster:

Cellsize Type  Choose which cell size to use in the output raster. If all the input cell sizes are the same, all the options will yield the same results.
