title: How can I scale an image using tcpdf?
body: <p>I've got an image of size 490 x 630 that was drawn in corel. It's supposed to have
  41.3 mm (wide) and 52.3 mm .</p>
  
  <p>The unit I'm using in my TCPDF class is "mm".</p>
  
  <p>I'm having trouble trying to acomplish this. </p>
  
  <p>What value should I put on setImageScale() ?</p>
  
  <p>Thanks !</p>