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10. Remove unnecessary elements
Check yourself


Get rid of unneeded elements.

Always check if all the elements on your chart are necessary. Avoiding clutter is a data visualization best practice. In this case, we aren't using the vertical categorical axis. Let's remove all its elements using the theme command.


Remove the vertical categorical axis grid, title, text, lines, and ticks. Add (+) the theme() command to the stacked object.

These are the options for vertical axis elements:

  • grid: panel.grid.major.y
  • axis title: axis.title.y
  • axis ticks: axis.ticks.y
  • axis text: axis.text.y
  • axis line: axis.line.y

When you're done, press the Run and Check Code button.

Stuck? Here's a hint!

You should write:

    axis.title.y = element_blank(),
    axis.ticks.y = element_blank(),  
    axis.text.y = element_blank(), 
    axis.line.y = element_blank(), 
    panel.grid.major.y = element_blank())