title: 'x' and 'y' must have the same length (ERROR)
body: <p>i'm loading a very simple csv file into R and am getting an error- it seems that R sometimes recognizes one of my vectors as nonnumeric.</p>
  
  <ol>
  <li><p>i could post my file, but in short it has 10 rows and 7 col's.  i eliminated the extraneous commas and am formatting the #'s as Number using excel.</p></li>
  <li><p>when i load to R and get a summary, it lists the statistics of each of the vectors, ie min/median/max, etc.  the name of my matrix is arabica2, and i can see this by summary(arabica2)</p></li>
  <li><p>the problematic vector is price2.  when i type summary(arabica2$price2), it says that the length is 0, class is NULL and mode is NULL.  i trie to get around this by multiplying the original price col *1 to ensure that it is numeric but it didn't help.</p></li>
  </ol>
  
  <p>has anyone encountered this type of error?  thanks in advance... mark</p>