stretch

Contents: Description, Arguments, Usage, Examples, Related Functions, Source Supported Under Version: >1.00 Current .dvrc Version: 1.03 Description Scale data to byte images using different stretching techniques. Arguments and Return Values Arguments: A numeric array and stretching parameters Return Value: A byte image. Usage Syntax: stretch(array, stretch_type, param1 [, param2] [, out_low = INT] [, out_high = INT] [, full = 1]) 'array' - A 1 band numeric array 'stretch_type' - As a string (in quotes), one of the following five options: auto - Automatic limit determination for linear stretch param1 - auto_end_val linear - Linearly stretch the data between values designated by param1 and param2 param1 - z min param2 - z max sigma - Linearly stretch the data according to a maximum number of standard deviations param1 - of sigmas away from mean to set to min and max DN in output array minmax - Linearly stretch the data between the min and max table - Linearly stretch data according to a table of look up values param1 - table mapping of input values to output values Examples dv> b=stretch(a,"auto", -19547, out_low = 10) or dv> c=stretch(a,'table',b)

DavinciWiki Mini-Nav Bar Contents Functions Function Categories Common Procedures Glossary Download Davinci Change Log News Mailing List Contact Developers davinci-dev [AT] mars.asu.edu All other topics See navigation on the left Related Functions sstretch hstretch nstretch image_stretch.dvrc stretch() Recent Library Changes Change Log Created On: 02-15-2006 Modified On: 01-17-2008