Plots Part 2

Your humanoid robot editor J-327D takes a look at your chart and nods his head up and down, and then shakes it side to side. Things rattle inside, but you try not to notice.

“You have a good start to a chart here, but it could be mo betta.”

– J-327D, Galactic News Hub editor

A plot as an object

J-327D points out a cool thing about ggplot is your can save your plot into an object, and then keep adding layers onto that basic plot using the + operator.

He shows you how you can do this …

Plotting values as text labels

J-327D first suggestion to improve the chart is to add the count of each species onto each bar so it is easier to read.

Use a geom to plot the count_species on top of each bar as text.

Note there are some adjustments in the code already for the location and color of the text.

Solution

species_plot + geom_text( aes(label = count_species), hjust = 1.75, color = "white" )

species_plot +
  geom_text(
    aes(label = count_species),
    hjust = 1.75,
    color = "white"
  )

Hint 1

J-327D says it is interesting that you can plot a value onto a chart using geom_text(). He noted an important thing to know is since you are pulling the value from the data you have to use aes() to captue the data point to plot it as a label.

On to the next step

You’re the hope the galaxy needs!

Once you’ve completed the exercises above, move to the next part of this trial.