 expand argument in ggplot2 scales functions.</p></dd>


<dt>x_labels</dt>
<dd><p>A function or named vector to modify x scale labels. If NULL, categorical variable labels are converted to sentence case. Use ggplot2::waiver() to keep x labels untransformed.</p></dd>


<dt>x_title</dt>
<dd><p>X scale title string. Defaults to NULL, which converts to sentence case with spaces. Use "" if you would like no title.</p></dd>


<dt>x_title_wrap</dt>
<dd><p>Number of characters to wrap the x title to. Defaults to 50