title: What is the impact of viewportwidth/height on Android drawables
body: <p>I have an vector drawable I imported from an SVG asset. Sometimes, I have to adjust the size. Usually I update width and height. What I can't work out is how viewportwidth and height also impact the svg. It seems changing these dimensions can push the svg out of view within the visible area. </p>
  
  <p>What do these units of measurement represent ? What is it's relationship with width and height respectively ? The <a href="https://developer.android.com/reference/android/graphics/drawable/VectorDrawable.html" rel="noreferrer">documentation from Google</a> is, (as usual), woefully inadequate. Could someone please elaborate ?</p>