ColorTools
ReducePalette
reduce a large list of colors to a smaller, representative list
Calling Sequence
Parameters
Options
Description
Examples
Compatibility
ReducePalette(colors)
colors
-
list of colors in formats recognized by ColorTools or a Palette object.
opts
(optional) equation(s) of the form option=value where option is either number or space
number=positive integer - maximum number of colors to return, 20 by default
space=string - the color space of the output color objects, "Lab" by default
This command reduces a large list of colors down to a small representative list of less than 20 colors.
with⁡ColorTools:
full ≔ seq⁡Color⁡RGB,1−i,i,1−i,i=0..1,0.05
moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module
numelems⁡full
21
reduced ≔ ReducePalette⁡full
moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module
numelems⁡reduced
11
imgfile ≔ cat⁡kernelopts⁡datadir,/images/antennas.jpg:
ImageTools:-Embed⁡ImageTools:-Read⁡imgfile
full ≔ ColorsFromImage⁡imgfile:
226
moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module
reduced ≔ ReducePalette⁡full,'number'=8,'space'=RGB
moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module,moduleColorTools:-Coloroptionobject;localcolorspace,coordinates,color_caption;end module
The ColorTools[ReducePalette] command was introduced in Maple 18.
For more information on Maple 18 changes, see Updates in Maple 18.
The ColorTools[ReducePalette] command was updated in Maple 2020.
The number and space options were introduced in Maple 2020.
For more information on Maple 2020 changes, see Updates in Maple 2020.
See Also
ColorTools/Color
ColorTools/ColorsFromImage
ColorTools/ColorSpaces
ColorTools/Palette
ImageTools
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