generate color mapping with regions of sharp separation

For example, it converts this input c('green'=0,'green4|red'=2,'red4'=4) to c('green'=0,'green4'=2,'red'=2+10e-6,'red4'=4)

Usage

colMapDistinctRegions(colMap)

Arguments

colMap

a named numerical vector; colors at point of separation should be separated by '|'.

Value

a normal color mapping vector;

Examples

colMapDistinctRegions(c('green'=0,'green4|red'=2,'red4'=4))
#>   green  green4     red    red4 
#> 0.00000 2.00000 2.00001 4.00000