title: Unit of viewportWidth and viewportHeight in case VectorDrawable
body: <p>I tried to find out what could be the unit(dp,sp,px) of viewportWidth and  viewportHeight in case VectorDrawable, but I didn't get any where unit of viewportWidth and  viewportHeight.
  Below is what I got from Android documentation.</p>
  
  <p><a href="https://developer.android.com/reference/android/graphics/drawable/VectorDrawable.html" rel="noreferrer">https://developer.android.com/reference/android/graphics/drawable/VectorDrawable.html</a></p>
  
  <ul>
  <li>android:width Used to define the intrinsic width of the drawable.
  This support all the dimension units, normally specified with dp.</li>
  <li>android:height Used to define the intrinsic height the drawable. This
  support all the dimension units, normally specified with dp.</li>
  <li>android:viewportWidth Used to define the width of the viewport space.
  Viewport is basically the virtual canvas where the paths are drawn
  on.</li>
  <li>android:viewportHeight Used to define the height of the viewport
  space. Viewport is basically the virtual canvas where the paths are
  drawn on.</li>
  </ul>
  
  <p>Can any one please help me.</p>