title: Matlab: slow with converting date strings to datenum?
body: <p>With 100,000 date strings to convert to datenums, Matlab is really slow... 20 seconds!!  Is there a faster way of doing this?</p>
  
  <pre><code>%strDay  
  %strTime
  
  dblDate = zeros(1, nLines);
  for i = 1 : nLines
      dblDate(j) = datenum([strDay{i}, ' ', strTime{i}], 'yy.mm.dd HH:MM:SS.FFF');
      j = j + 1;
  end
  </code></pre>