Default color overlay for adding new layers — default_overlay • HilbertCurve

Default color overlay for adding new layers

default_overlay(r0, g0, b0, r, g, b, alpha = 1)

Arguments

r0: red channel for the layers that are already in the plot.
g0: green channel for the layers that are already in the plot.
b0: blue channel for the layers that are already in the plot.
r: red channel for the new layer
g: green channel for the new layer
b: blue channel for the new layer
alpha: alpha channel for the new layer

Details

The default overlay is (take red channel for example) r*alpha + r0*(1-alpha).

Value

A list which contains overlayed RGB colors (values between 0 and 1).

See also

Color overlay function is always used in hc_layer,HilbertCurve-method or hc_layer,GenomicHilbertCurve-method.

Author

Zuguang Gu <z.gu@dkfz.de>

Examples

# red (1, 0, 0) overlay to the grey (0.5, 0.5, 0.5) with 0.5 transparency
default_overlay(1, 0, 0, 0.5, 0.5, 0.5, 0.5)
#> $r
#> [1] 0.75
#> 
#> $g
#> [1] 0.25
#> 
#> $b
#> [1] 0.25
#>