ui-gmap-layer>
    <ui-gmap-layer namespace="visualization" type="HeatmapLayer" show="map.showHeat"
                   onCreated="map.heatLayerCallback"></ui-gmap-layer>


    <!-- polyline example -->
    <!--<ui-gmap-polyline ng-repeat="p in map.polylines" path="p.path" stroke="p.stroke" visible='p.visible'-->
    <!--geodesic='p.geodesic' fit="false" editable="p.editable" draggable="p.draggable"></ui-gmap-polyline>-->

    <ui-gmap-polylines models="map.polylines" path="'path'" stroke="'stroke'" visible=