FUNCTION: bytescale(array) PURPOSE: Takes an array or image and scales it to bytes INPUT: array of numeric values. KEYWORDS: RANGE: Two element vector specifying the range of array to be used. Defaults to the min and max values in the array. ZERO: Forces range(0) to zero TOP: Maximum byte value (default is !d.table_size-2) BOTTOM: Minimum byte value (default is 1) MIN_VALUE: autoranging ignores all numbers below this value MAX_VALUE: autoranging ignores all numbers above this value MISSING: Byte value for missing data. (values outside of MIN_VALUE, MAX_VALUE range) If the value is less than 0 then !p.background is used. LOG: sets logrithmic scaling CREATED BY: Davin Larson LAST MODIFICATION: @(#)bytescale.pro 1.22 02/04/17