title: Access scores for observation on linear discriminants in LDA using MASS:lda()
body: <pre><code>library(MASS)
  example(lda)
  plot(z)
  </code></pre>
  
  <p>How can I access all the points in z? I want to know the values of every point along LD1 and LD2 depending on their Sp (c,s,v).</p>