Extract mappings

Extract necessary information from the ggplot mappings.

mapping_spc(mapping_plt)

Arguments

mapping_plt	A list of defined aesthetics from the ggplot object.

Value

list of encodings with their field descriptions

Examples

library(ggplot2)
p <- ggplot(data = iris, aes(x = Petal.Width, y = Petal.Length))
p <- p + geom_point()
mapping_spc(p$mapping)
#> $x
#> $x$field
#> [1] "Petal.Width"
#> 
#> 
#> $y
#> $y$field
#> [1] "Petal.Length"
#> 
#>