<p>A density chart is built thanks to the <code>geom_density</code> geom of ggplot2 (see a <a href="21-distribution-plot-using-ggplot2.html">basic example</a>). It is ...

In the boxplots the means may be connected by a line. The code below may enable the bug to be found easily? I used diamonds dataset first, and you can see that the variable clarity is still in the ...

Note the column name, mpg, is unquoted. That feature hasn’t been handy, though, if you want to write your own R functions using the tidyverse. That’s because base R functions usually need quoted ...