title: how is a matrix associated with a canvas in android?
body: <p>i was just going through the documentation given on developer.android.com and when i was going through the canvas class if i found this method named scale, so i searched for its documentation and found the following:</p>
  
  <p>public void scale (float sx, float sy)
  Since: API Level 1</p>
  
  <p>Preconcat the current matrix with the specified scale.
  Parameters
  sx  The amount to scale in X
  sy  The amount to scale in Y </p>
  
  <p>what matrix are they talking about over here? How is the matrix associated with canvas and how does it matter if i scale my canvas or not?</p>