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Unparseable psql output due to presence of column headers. The pqsl -t option fixes this. · Step 1

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<Widget xsi:type="UiWidgetType">
      <Name>WmsQuery</Name>
      <Type>WmsQuery</Type>
      <Location />
      <Extension />
      <ImageUrl>images/icons.png</ImageUrl>
      <ImageClass>select</ImageClass>
      <Label>WMS Query</Label>
      <Tooltip>Click to query for features in WMS layers at the point you click</Tooltip>
      <StatusText />
      <Disabled>false</Disabled>
</Widget>

traj_collection.min_length = 100
trips = traj_collection.split_by_observation_gap(timedelta(minutes=5))

 
origins = trips.get_start_locations(['SOG', 'ShipType']) 

from sklearn.cluster import DBSCAN
from geopy.distance import great_circle
from shapely.geometry import MultiPoint

origins['lat'] = origins.geometry.y
origins['lon'] = origins.geometry.x
matrix = origins.as_matrix(columns=['lat', 'lon'])

kms_per_radian = 6371.0088
epsilon = 0.1 / kms_per_radian

db = DBSCAN(eps=epsilon, min_samples=1, algorithm='ball_tree', metric='haversine').fit(np.radians(matrix))
cluster_labels = db.labels_
num_clusters = len(set(cluster_labels))
clusters = pd.Series([matrix[cluster_labels == n] for n in range(num_clusters)])
print('Number of clusters: {}'.format(num_clusters))

origins['cluster'] = cluster_labels

 
def get_centermost_point(cluster):
    centroid = (MultiPoint(cluster).centroid.x, MultiPoint(cluster).centroid.y)
    centermost_point = min(cluster, key=lambda point: great_circle(point, centroid).m)
    return Point(tuple(centermost_point)[1], tuple(centermost_point)[0])
centermost_points = clusters.map(get_centermost_point) 

ALTER TABLE the_table
  ALTER COLUMN status TYPE INT
    USING (CASE WHEN status = 'happy' THEN 1 ELSE 3 END);
BEGIN;

ALTER TABLE the_table ALTER COLUMN status DROP DEFAULT;
ALTER TABLE the_table
  ALTER COLUMN status TYPE INT
    USING (CASE WHEN status = 'happy' THEN 1 ELSE 3 END);
ALTER TABLE the_table ALTER COLUMN status SET DEFAULT 1;

COMMIT;
https://s3-ap-southeast-2.amazonaws.com/basemaps.temp/nz_colour_basemap/WMTSCapabilities.nz_colour_basemap.xml
https://s3-ap-southeast-2.amazonaws.com/basemaps.temp/nz_topo_basemap/WMTSCapabilities.nz_topo_basemap.xml
<html>
	<head>
		<link rel="stylesheet" href="css/reveal.css">
		<link rel="stylesheet" href="css/theme/white.css">
	</head>
	<body>
		<div class="reveal">
			<div class="slides">
				<section>Slide 1</section>
				<section>Slide 2</section>
			</div>
		</div>
		<script src="js/reveal.js"></script>
		<script>
			Reveal.initialize();
		</script>
	</body>
</html>

.reveal .slides section .fragment.pointy.current-fragment::before{
  content:"? " ;
}

<section>
	<h3>Unordered list:</h3>
	<ul>
		<li class="fragment pointy">Fragment 1</li>
		<li class="fragment pointy">Fragment 2</li>
		<li class="fragment pointy">Fragment 3</li>
		<li class="fragment pointy">Fragment 4</li>
	</ul>
</section>

.reveal .slides section .fragment.bold {
opacity: 1;
visibility: inherit;
}

.reveal .slides section .fragment.bold.current-fragment{
  font-weight: bold;
}

<section>
	<p>Here's a sentence where <span class="fragment bold">this</span>, <span class="fragment bold">this</span> and <span class="fragment bold">this</span> need to be highlighted.</p>
</section>

<script src="js/reveal.js"></script>
<script src="js/jquery-3.4.1.slim.min.js"></script>
<script src="js/jquery-canvas-sparkles.js"></script>

.reveal .slides section .fragment.sparkley {
opacity: 1;
visibility: inherit;
}

.reveal .slides section .fragment.sparkley.current-fragment{
  border: none;
  font-weight: normal;
  color:pink;
  }

Reveal.addEventListener('sparkley', function() {

				Reveal.addEventListener( 'fragmentshown', function( event ) {
					// event.fragment = the fragment DOM element
					var timer;
					clearTimeout(timer);
					$curfrag = $(event.fragment);
					$curfrag.sparkle({"color": "rainbow" , 
	                "minSize": 5 , 
	                "maxSize": 10 ,
	                "overlap": 0 ,
	                "direction": "both" ,
	                "speed": 1,
	                "fadeSpeed":3000});
					$curfrag.off("mouseover.sparkle")
					$curfrag.trigger("start.sparkle")
						.on("click");
					
					timer = setTimeout(function(){
						$curfrag.trigger("stop.sparkle");
					},100);

				} );
				Reveal.addEventListener( 'fragmenthidden', function( event ) {
					$curfrag.trigger("stop.sparkle")
				});

			}, false );

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