title: How to make plot title partly bold?
body: <p>I want to edit the title of my plot so it has four words with only the last ones being bold, example:
  Title: "This is" (normal font) "my plot" (bold).</p>
  
  <p>I have tried several codes I found online but I only managed to make all of the title for the plot bold.My code (example) is looking something like this as I also want to change thee colour and the position of the title. Right now all of the title is in bold due to "face=bold" in my code. As explained above I would only like the last two words be in bold, yet in one line, so no subtitle or another line below. I am using ggplot2 and help will be greatly appreciated! </p>
  
  <pre><code>plot4 &lt;- plot4 + labs(title = "This is my plot")
  
  plot4 &lt;- plot4 + theme(plot.title=element_text(hjust=0.5, vjust=0.1, face='bold', colour="blue"))
  </code></pre>