crosstalk (version 1.2.1)

scale_fill_selection: ggplot2 helpers

Description

Add scale_fill_selection() or scale_color_selection to a ggplot to customize the scale for fill or color, respectively, for linked brushing. Use selection_factor to turn logical vectors representing selection, to a factor with the levels ordered for use with ggplot2 bar stacking.

Usage

scale_fill_selection(color_false, color_true)
scale_color_selection(color_false, color_true)
selection_factor(
  x,
  na.replace = c(FALSE, NA, TRUE),
  reverse = packageVersion("ggplot2") < "2.2.0"
)

Arguments

color_false

The color that should be mapped to unselected rows

color_true

The color that should be mapped to selected rows

x

Either a data frame with a selected_ column, or, a logical vector indicating which rows are selected

na.replace

The value to use to replace NA values; choose either FALSE, NA, or TRUE based on how you want values to be treated when no selection is active

reverse

Whether the factor level order should be c(FALSE, TRUE) (normal) or c(TRUE, FALSE) (reverse). The former is required for ggplot2 2.2.0+, the latter for earlier versions.

Examples

if (FALSE) {
sd <- SharedData$new(iris)
renderPlot({
  df <- sd$data(withSelection = TRUE, withFilter = TRUE)
  ggplot(df, aes(Sepal.Length, Sepal.Width,
    color = selection_factor(df))) +
    geom_point() +
    scale_color_selection("#444444", "skyblue1")
})

}