title: R markdown ... chunk size to control figure size in knitr - text size problem
body: <p>I am kniting an R markdown to produce a report and everything is working perfectly as expected, EXCEPT that in the final chunk I create a series of faceted violin plots (in a loop) and use the chunk options ...</p>
  
  <pre><code>{r facet plots, Tidy=TRUE, echo = FALSE, include=TRUE, warning=FALSE, fig.height = 40, fig.width = 30}
  </code></pre>
  
  <p>to control the plot size. This works perfectly for the plots but the axis text on the plots becomes minuscule!! As below:</p>
  
  <p><a href="https://i.stack.imgur.com/IuQ7e.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IuQ7e.png" alt="enter image description here"></a></p>
  
  <p>The ggplot call is...</p>
  
  <pre><code>ggplot(FctPlotData, aes(x=TimeGroup, y=OverallTAT)) + 
    geom_violin(trim = FALSE, fill='lightgrey', color="darkblue") +
    xlab("Time of Day (groupings in 4 hour intervals)") +
    ylab("Turnaround Time") + 
    facet_wrap(~(DoW), ncol = 1, scales = "free_y") +
    ggtitle(paste0(spTst, " Turnaround Breakdown by Day of Week and Time of Day")) + 
    theme_pc()
  </code></pre>
  
  <p>I use a custom theme - <code>theme_pc()</code> - to set a common look and feel to all my plots (with text size specified therein) and it works in all other contexts but not for this?</p>
  
  <p>I have attempted to address this by including</p>
  
  <pre><code>knitr::opts_chunk$set(results = 'asis')
  </code></pre>
  
  <p>in the top level (setup) chunk but this hasn't helped, does anyone have any insights about how to get the labels to a legible size?</p>