Let’s finish up this post with a quick example of how to code the elusive line chart with two y-axes. This always seems to be asked in the forums and it’s pretty easy to implement.
Follow the same steps as shown above to bring in a new R visual. Since we need a column to pass into the visual and open up the editor, let’s just throw in the Angle field that we made previously. With the code editor available we can start writing the R script. In this example, we are going to need some data that is available in a specific R package, called “ggplot2.” Go ahead and install the package by typing the following code the same way we installed scatterplot3d:
There are two interesting examples here, including one which accepts an external parameter.