How to Change Plotting Symbol in rCharts rPlot?

Question

I want to change the plotting symbol in my rCharts rPlot from the default circle. Specifically, I'd like to be able to use a triangle pointing up, a triangle pointing down, and a square. I only want 1 symbol at a time in any given graph, I'm just trying to figure out the right argument to make that happen. Here is the sample code:

    p6 <- rPlot(mpg ~ wt, data = mtcars, type = 'point', color = "gear")
    p6

Any help with this would be greatly appreciated. Thanks in advance.

Answer 1

I am not seeing this as an option in polycharts, but you could do this with highcharts and hPlot:

p6 <- hPlot(mpg ~ wt, data = mtcars, type = 'scatter', group = "gear")
p6