title: Heatmap with different sized rectangles and colors
body: <p>There are several heatmap implementations for R. All of them have in common that they span (dimension 1 and 2) a matrix with equal sized rectangles. The color of the rectangle then shows the height of a measure (dimension 3).</p>
  
  <p>The kind of heatmap I am looking for is a bit different. For every entry (Dimension 1) I would like to have a rectangle. The rectangle's size should represent the value of dimension 2 and its color dimension 3.</p>
  
  <p>Do these kind of heatmaps have a special name? And is there a R implementation? </p>
  
  <p>When googling I can find images like these (not created in R):
  <a href="https://i.stack.imgur.com/zgxRQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zgxRQ.png" alt="enter image description here"></a></p>
  
  <p>Thanks</p>