Define an AOI

Guidelines for creating and correcting areas of interest (AOIs).


An AOI represents an area, such as the boundary of a property, a water body, or a forest. It should be a polygon, that is, a two-dimensional closed shape bounded with straight sides. Multipolygons aren't allowed.

The coordinate system for an AOI is EPSG:4326 (WGS84), and the units are decimal degrees.

Rules for creating polygons:

  • No more than 1000 vertices.
  • The first and last coordinate pairs are identical.

Create an AOI

If you're using the console, you can create an AOI in a number of ways:

  • Search for a location

    Start typing a name of a place in the Search location bar and select a prompt from a drop-down list.

  • Draw a polygon

    Click Draw polygon icon on the top right to draw your AOI.

  • Upload a file

    Click Upload icon in the Search location bar to upload a file with your AOI.

See file formats for different platforms

Platform optionFile formatsGeoJSON object
GeoJSON Feature
GeoJSON Feature
GeoJSON FeatureCollection
GeoJSON FeatureCollection

Fix invalid polygons

  • Don't use a shadock polygon, that is, when a polygon intersects the image footprint in more than one segment, thus creating more polygons.

    Fix shadock polygons in one of the following ways:

    • Modify the size of the polygon, so that it intersects the image footprint in one segment.
    • Split the polygon into more polygons, so that each one intersects the image footprint in one segment.
  • Don't use a sliver polygon, that is, a polygon with a very small area but with a very large perimeter.

  • Don't use a polygon that contains holes, self-intersections, or has an extremely complicated shape with too many vertices. If needed, apply a simplification algorithm — for example, Douglas-Peucker.

invalid aoi