title: Factoextra - change line width for ellipses and variables
body: <p>I'm currently making pca with <code>factomineR</code> and <code>factoextra</code> packages.</p>
  <p>An example of my code with data iris :</p>
  <pre><code>library(FactoMineR) 
  library(factoextra)
  
  data(iris)
  res.pca&lt;-PCA(iris , scale.unit=TRUE, ncp=2, quali.sup=c(5), graph =  FALSE)
  
  fviz_pca_biplot(res.pca, label=&quot;var&quot;, habillage=5,
                  addEllipses=TRUE) + theme_minimal()
  </code></pre>
  <p><img src="https://i.stack.imgur.com/185Gh.png" alt="1" /></p>
  <p>I want to change the width of the lines surrounding the ellipses and same for the width of the variables. I tried several methods but I couldn't figure how to do what I want.</p>
  <p>Any ideas?</p>