g2r (version 0.1.0)

gauge_opacity: Gauge opacity

Description

Gauge opacity.

Usage

gauge_opacity(g2, callback = NULL)

Arguments

g2

An object of class g2r as returned by g2r.

callback

A JavaScript callback function (see cb) which returns a color.

Examples

# NOT RUN {
func <- cb("function(dist){
  if(dist > 60)
    return 1
  return .3
}")

g2(cars, asp(speed, dist, opacity = dist)) %>% 
  fig_point() %>% 
  gauge_opacity(callback = func)

# }