Set active and/or activeGeomLayers
active(active = NULL, activeGeomLayers = NULL)a logical or a logical vector of length n that determines which observations
are active (TRUE and hence appear in the plot) and which are inactive (FALSE and hence do not appear).
Default is TRUE.
determine which geom layer is interactive by its `geom_...` position in the grammar of the expression.
Currently, only geom_point() and geom_histogram() can be set as the active geom layer(s) so far.
(N.B. more than one geom_point() layer can be set as an active layer,
but only one geom_histogram() can be set as an active geom layer and it can be the only active layer.)
a ggproto object
if(interactive()) {
# set active layer
l_ggplot(mtcars, aes(mpg, wt, shape = factor(cyl))) +
geom_point(colour = "black", size = 4.5) +
geom_point(colour = "pink", size = 4) +
geom_point(aes(shape = factor(cyl))) +
# only show manual transmission cars
# in the second interactive layer
active(active = mtcars$am == 1,
activeGeomLayers = 2)
# Then, click the `reactivate` button on loon inspector
# to display all interactive points
}