title: Reactive/Dynamic Markers using Flutter
body: <p>I have tried a few different Map based packages in Flutter, however they all seem very basic and don't seem to meet my requirements.</p>
  
  <p>I have had the most luck with the following package.</p>
  
  <pre><code>https://pub.dartlang.org/packages/flutter_map
  </code></pre>
  
  <blockquote>
    <p>But I would like to be able to do either of the following</p>
    
    <ol>
    <li>Move a marker point without having the reload the map</li>
    <li>Draw/extend a polyline based on streamed LatLNg objects.</li>
    </ol>
  </blockquote>
  
  <p>The first should be pretty simple, but all attempts have just ended up refreshing the map, which isn't what I want.</p>
  
  <p><strong>Question:</strong></p>
  
  <blockquote>
    <p>How can I use dynamically move a marker or draw a poly line in flutter
    using either google maps or OSM (Open Street Maps)?</p>
  </blockquote>