Highlight Specification — highlight

Create a highlight specification to pass on to a chart function

highlight_spec(what, highlight_color = NULL, other_color = NULL)

Arguments

what	`character` The value(s) to highlight
highlight_color	`character` The highlight color(s)
other_color	`character` The color for the non-highlighted values

Value

An object of class ggcharts_highlight_spec

Details

highlight_color must be of length 1 or the same length as what. If it is of length 1 then all values in what are highlighted with the same color.

If highlight_color is NULL (the default) then it is set to the default color of the currently active ggcharts theme, i.e. ggcharts_get_default_color(ggcharts_get_theme()).

If other_color is NULL is is automatically determined from the background color of the currently active ggcharts theme.

Examples

data("biomedicalrevenue")
revenue2018 <- biomedicalrevenue[biomedicalrevenue$year == 2018, ]

spec <- highlight_spec("Bayer")
bar_chart(revenue2018, company, revenue, highlight = spec)

spec <- highlight_spec("Bayer", "black", "gray")
bar_chart(revenue2018, company, revenue, highlight = spec)

spec <- highlight_spec(c("Bayer", "Novartis"))
bar_chart(revenue2018, company, revenue, highlight = spec)

spec <- highlight_spec(c("Bayer", "AstraZeneca"), c("darkgreen", "darkorange"))
bar_chart(revenue2018, company, revenue, highlight = spec)

ggcharts_set_theme("theme_ng")
spec <- highlight_spec("Novartis")
lollipop_chart(revenue2018, company, revenue, highlight = spec)