library(plotly)

## Loading required package: ggplot2

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## Attaching package: 'plotly'

## The following object is masked from 'package:ggplot2':
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##     last_plot

## The following object is masked from 'package:stats':
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##     filter

## The following object is masked from 'package:graphics':
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##     layout

data(mtcars)

plot_ly(x=mtcars$mpg, y= mtcars$cyl, z = mtcars$wt, 
type = "scatter3d", mode = "markers", color = mtcars$cyl)

An example using plotly on the mtcars data set for visualization. On the xaxis we have mpg, on the y we have cylinder and on the z we have weight. Color coded by cyl.