Convert linestring to polygon

Supported in: Batch, Streaming

Convert a linestring geometry to a polygon geometry. This expression assumes the linestring geometry is closed. If not, the expression will return null.

Expression categories: Geospatial

Declared arguments

Expression - A valid linestring geometry.
Expression<Geometry>

Output type: Geometry

Examples

Example 1: Base case

Argument values:

Expression: polygon_points

polygon_points	Output
{"type":"LineString","coordinates":[[-77.49,38.01],[-77.47,38.15],[-77.19,38.14],[-77.49,38.01]]}	{"type":"Polygon","coordinates":[[[-77.49,38.01],[-77.47,38.15],[-77.19,38.14],[-77.49,38.01]]]}

Example 2: Null case

Argument values:

Expression: polygon_points

polygon_points	Output
null	null
{"type":"LineString","coordinates":[[-77.49,38.01],[-77.19,38.14],[-77.49,38.01]]}	null
{"type":"LineString","coordinates":[[-77.49,38.01],[-77.19,38.14]]}	null
{"type":"LineString","coordinates":[[-77.49,38.01]]}	null
{"type":"Polygon","coordinates":[[[-77.49,38.01],[-77.47,38.15],[-77.19,38.14],[-77.49,38.01]]]}	null