brighten

Brighten or darken colormap

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Syntax

brighten(beta)
brighten(h,beta)
newmap = brighten(beta)
newmap = brighten(cmap,beta)

Description

brighten(beta) increases or decreases the color intensities in a colormap by replacing the current colormap with a brighter or darker colormap of essentially the same colors. The modified colormap is brighter if 0 < beta < 1 and darker if -1 < beta < 0. 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

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Open Script

Display a surface plot of membrane.

surf(membrane)

Brighten the colormap.

beta = .7;
brighten(beta)

More About

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Algorithms

brighten raises values in the colormap to the power of gamma, where gamma is

γ={1−β,β>011+β,β≤0

brighten has no effect on graphics objects defined with true color.

See Also

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Introduced before R2006a

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