Display the legend for colors and annotations in the active rgl window. In case no rgl window is opened, a new window displaying the x3p file (using default sizes and zoom) opens.
Arguments
- x3p
x3p object with a mask
- colors
named character vector of colors (in hex format by default), names contain annotations
Examples
x3p <- x3p_read(system.file("sample-land.x3p", package="x3ptools"))
if (FALSE) {
# run when rgl can open window on the device
x3p_image(x3p)
x3p_add_legend(x3p) # add legend
}