Brighten or darken colormap
Syntax
brighten(beta)
brighten(h,beta)
newmap = brighten(beta)
newmap = brighten(cmap,beta)
Description
brighten
increases or decreases the color intensities in a colormap. The modified colormap is brighter if 0 < beta < 1
and darker if -1 < beta < 0
.
brighten(beta)
replaces the current colormap with a brighter or darker colormap of essentially the same colors. brighten(beta)
, followed by brighten(-beta)
, where beta < 1
, restores the original map.
brighten(h,beta)
brightens all objects that are children of the Figure having the handle h
.
newmap = brighten(beta)
returns a brighter or darker version of the current colormap without changing the display.
newmap = brighten(cmap,beta)
returns a brighter or darker version of the colormap cmap
without changing the display.
Examples
Brighten then darken the current colormap:
beta = .5; brighten(beta);
beta = --.5; brighten(beta);
Algorithm
The values in the colormap are raised to the power of gamma, where gamma is
brighten
has no effect on graphics objects defined with true color.
See Also
colormap
, rgbplot
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