Looking at all data
Looking at the speed for a given car color is a little contrived so let's change the example we saw in the slides to include all of the data.
Your job is to fill in the code to make a histogram of the speed_over column of the data.
In addition, to allow the reader to more easily anchor themselves with respect to the axes, lower the alpha of the histogram to allow the grid lines to show through. Pair this with the addition of theme_minimal() to darken the grid lines and lighten the background to compensate for the lighter bars.
This exercise is part of the course
Visualization Best Practices in R
Exercise instructions
- Add
geom_histogram()withspeed_overmapped to the x-axis. - Set
alphaof histogram to0.7. - Add
theme_minimal()to plot to increase contrast.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
ggplot(md_speeding) +
# Add the histogram geometry
___(
# Map speed_over to x
___
# Lower alpha to 0.7
___
) +
# Add minimal theme
___