title: How can I get vertices for only the outside edges of a hexRing() in H3?
body: <p>The gist of this is pretty straight forward, even if the implementation isn't...</p>
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  <p>I want to get the outside edges of a <code>hexRing</code>, as opposed to all edges of the hexagons. Pretty much creating a single polygon from the outside edge of the ring encompassing everything inside of it. Currently we can use <code>geojson2h3.h3SetToFeature()</code> which uses <code>h3SetToMultiPolygon()</code> to create that polygon.</p>
  <p>This looks like:</p>
  <p><strong>HexRingPolygon:</strong></p>
  <p><a href="https://i.stack.imgur.com/inMjs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/inMjs.png" alt="enter image description here" /></a></p>
  <p>Instead, I want to get just the outside edge, which would look like the following:</p>
  <p><strong>Outside Edges:</strong></p>
  <p><a href="https://i.stack.imgur.com/RTl2L.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RTl2L.png" alt="enter image description here" /></a></p>
  <p>To achieve just an outside border, I'm currently using <code>kRing()</code>, however, the performance characteristics of this become unusable on mobile devices in a variety of scenarios due to the number of hexagons contained in that region. Where as a <code>hexRing()</code> would have a minimal number of hexagons to work with.</p>
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  <p><strong>How can I achieve this?</strong></p>