Modifying theme elements
Many plot elements have multiple properties that can be set. For example, line elements in the plot such as axes and gridlines have a color, a thickness (size), and a line type (solid line, dashed, or dotted). To set the style of a line, you use element_line(). For example, to make the axis lines into red, dashed lines, you would use the following.
p + theme(axis.line = element_line(color = "red", linetype = "dashed"))
Similarly, element_rect() changes rectangles and element_text() changes text. You can remove a plot element using element_blank().
plt_prop_unemployed_over_time is available.
Questo esercizio fa parte del corso
Introduction to Data Visualization with ggplot2
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
plt_prop_unemployed_over_time +
theme(
# For all rectangles, set the fill color to grey92
___ = ___(___ = ___),
# For the legend key, turn off the outline
___
)