Beginning R 4 by Matt Wiley & Joshua F. Wiley

Author:Matt Wiley & Joshua F. Wiley
Language: eng
Format: epub
ISBN: 9781484260531
Publisher: Apress

You may recall, from Chapter 1, a similar plot using mpg and wt. This time, we use the ggplot() function you now know. As you might suspect, we need to learn a bit more about graph building! Because you are now comparing two dimensions of data, the mapping needs to include both an x variable and a y variable. As always, that is set in the aesthetic area.

Additionally, you need a new visual geometry – in this case geom_point() – to provide a point plot of each (x, y) coordinate point in the data set:ggplot(data = mtcarsData,

mapping = aes(x = mpg,

y = hp)) +

geom_point()

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