Polygon Layer

Polygon Layer can display GeoJSON features. GeoJSON supports the following geometry types: Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon.

Studio supports all the GeoJSON types above. You can pass in either a single Feature or a FeatureCollection

An example of the Polygon Layer.

A path GeoJSON layer can display data like trip routes or contours. Stroke color can be set with a numerical field.

Polygon Layer, filled and colored

A polygon GeoJSON layer is essentially a choropleth layer and works best for rendering geofences. Fill color or height can be set with a numerical field. For example, it can display population by census tracts.

Polygon Layer showing 3D buildings.

To add a Polygon Layer, your dataset must contain geometry data.

GeoJSON Input

When upload a GeoJSON file contains FeatureCollection, a Polygon Layer will be auto-created.

Example GeoJSON

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "geometry": {
        "type": "Point",
        "coordinates": [102.0, 0.5]
      },
      "properties": {
        "prop0": "value0"
      }
    },
    {
      "type": "Feature",
      "geometry": {
        "type": "LineString",
        "coordinates": [
          [102.0, 0.0],
          [103.0, 1.0],
          [104.0, 0.0],
          [105.0, 1.0]
        ]
      },
      "properties": {
        "prop0": "value0"
      }
    }
  ]
}

Geometries (Polygons, Points, LineStrings etc) can be embedded into CSV as a GeoJSON or WKT formatted string.

1. GeoJSON string

id,_geojson
1,"{\"type\":"Polygon\",\"coordinates\":[[[-74.158491,40.835947],[-74.157914,40.83902]]]}"

2. WKT string

Example data.csv with WKT string The Well-Known Text (WKT) representation of geometry values is designed for exchanging geometry data in ASCII form.

id,_geojson
1,"POLYGON((0 0,10 0,10 10,0 10,0 0),(5 5,7 5,7 7,5 7, 5 5))"

CSV Input

Paths can be created by joining a list of points from latitude and longitude, sort by an index field (e.g. timestamp) and group by unique ids.

Layer columns:

• id: - required - A id column is used to group by points. Points with the same id will be joined into a single path.
• lat: - required - The latitude of the point
• lon: - required - The longitude of the point
• alt: - optional - The altitude of the point
• sort by: - optional - A sort by column is used to sort the points, if not specified, points will be sorted by row index.

Example CSV

Filter Polygons

With polygons added to your map, you can select them to create geospatial boundaries that serve as a filter.

Selecting a neighborhood polygon to filter suitability analysis results.

Learn more in the geospatial filter documentation.

Settings

The follow sections detail every setting available in the Polygon Layer.

Basic

Core settings for the Polygon Layer.

Fill Color

Settings related to the fill color of the polygons.

Stroke Color

Settings related to the stroke color of the polygons.

Stroke Width

Settings related to the stroke widths of the polygons.

Height

Height settings for the polygon layer. Height is best viewed with the 3D viewing mode.

Polygon Layer visualizing building footprints with fixed heights.

Label

Label settings for the Polygon Layer. Labels are attached to each polygon.

Polygons with labels.

JSON Schema

For details on how to programmatically specify layer properties, refer to the Layer Configuration specification.

Updated 5 months ago.