r - What type of graph is this? And can it be created using ggplot2?

Question

I have this chart that I'm attempting to replicate. It has two continuous variables for the X & Y axes, and charts the relationship between these two variables through time with a line.

My question has two parts:

• First, what is this type of chart called? It is unusual because the line between the points is determined by a third variable (the year) rather than their positions on the X axis.

• Second, does anyone know whether this can be achieved with ggplot? I have so far created a chart similar to the above but without the line connecting the points. This code ggplot(data, aes(x = Weekly_Hours_Per_Person, y = GDP_Per_Hour)) + geom_point() has gotten the below output: But how to get the line over years?

Any help on either point will be appreciated. Thanks!

Answer 1

Use geom_path, i.e.

libraray(ggplot2)
ggplot(data, aes(x = Weekly_Hours_Per_Person, y = GDP_Per_Hour)) +
geom_point() + 
geom_path()