isColl color conversion function in grDevices

Source: R/unhcr_color_util.R

Helper function to detect any color (in an individual character string)

isCol(color)

Author

ipda | unhcr.org | 2020

Examples

{
isCol("white")
isCol(col2hex("black", alpha = 255/2))
isCol(NA)
isCol("bumblebee")
# BUT note:
isCol(col2rgb("white"))  # => FALSE FALSE FALSE
 }

#> [1] FALSE FALSE FALSE