do dcs
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| − | [[ | + | A quick shortcut to make [[dcs]] images with any three bands |
| + | | | ||
| + | Arguments: A numeric array greater than 3 bands deep, and three band numbers to use in dcs operation | ||
| + | |||
| + | Return Value: A three band [[bip]] [[byte]] [[dcs]]-ed image. | ||
| + | | | ||
| + | [[Syntax]]: do_dcs(data, band1, band2, band3 [, ignore = VAL] [, sample = VAL] [, variance = VAL]) | ||
| + | |||
| + | 'data' - a multiband numeric array of greater than three bands | ||
| + | |||
| + | 'band1 - band3' - the red, green and blue bands in the dcs calculation | ||
| + | |||
| + | 'ignore' an optional null value of the data, default = -32768 | ||
| + | |||
| + | 'sample' an optional color sample array | ||
| + | |||
| + | 'variance' an optional color variance specification, default = 50 | ||
| + | |||
| + | If no bands are specified an 8-7-5 stretch will be attempted. | ||
| + | | | ||
| + | dv> a | ||
| + | 300x750x10 array of float, bsq format [9,000,000 bytes] | ||
| + | |||
| + | dv> b | ||
| + | 300x750x10 array of float, bsq format [9,000,000 bytes] | ||
| + | |||
| + | dv> display(do_dcs(a,9,6,4)) | ||
| + | |||
| + | dv> display(do_dcs(a,7,5,3,ignore = -32768)) | ||
| + | |||
| + | dv> pic = do_dcs(a,variance = cat(80,50,50,axis = y)) | ||
| + | 300x750x3 array of byte, bip format [675,000 bytes] | ||
| + | |||
| + | dv> pic = do_dcs(a,ignore = 0,sample = b) | ||
| + | 300x750x3 array of byte, bip format [675,000 bytes] | ||
| + | | | ||
| + | [[Image:dcspic.png]] | ||
| + | | | ||
| + | *[[dcs]] | ||
| + | *[[cat]] | ||
| + | | | ||
| + | *[[do_rgb]] | ||
| + | *[[do_rdcs]] | ||
| + | |*image_stretch.dvrc | ||
| + | | | ||
| + | }} | ||
[[category:Functions]] | [[category:Functions]] | ||
| + | [[category:User Defined Functions]] | ||
[[category:Image Stretching]] | [[category:Image Stretching]] | ||
Latest revision as of 16:07, 17 January 2008
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Contents: Description, Arguments, Usage, Examples, Images, Sub-Functions, Related Functions, Source Supported Under Version: >1.00
Description A quick shortcut to make dcs images with any three bands
Arguments and Return Values
Usage Syntax: do_dcs(data, band1, band2, band3 [, ignore = VAL] [, sample = VAL] [, variance = VAL]) 'data' - a multiband numeric array of greater than three bands 'band1 - band3' - the red, green and blue bands in the dcs calculation 'ignore' an optional null value of the data, default = -32768 'sample' an optional color sample array 'variance' an optional color variance specification, default = 50 If no bands are specified an 8-7-5 stretch will be attempted.
Examples dv> a 300x750x10 array of float, bsq format [9,000,000 bytes] dv> b 300x750x10 array of float, bsq format [9,000,000 bytes] dv> display(do_dcs(a,9,6,4)) dv> display(do_dcs(a,7,5,3,ignore = -32768)) dv> pic = do_dcs(a,variance = cat(80,50,50,axis = y)) 300x750x3 array of byte, bip format [675,000 bytes] dv> pic = do_dcs(a,ignore = 0,sample = b) 300x750x3 array of byte, bip format [675,000 bytes]
Images
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Recent Library Changes Created On: 02-15-2006 |
