Parse GeoJSON from a non-WGS 84 coordinate system

Supported in: Batch, Streaming

Convert GeoJSON string from a non-WGS 84 coordinate system to WGS 84 geometry. For GeoJSON already in WGS 84 (longitude, latitude), the "logical type cast" expression can convert directly with less overhead. Returns null for strings that fail during parsing or conversion.

Expression categories: Geospatial

Declared arguments

GeoJSON string - GeoJSON as a string. Note that not all GeoJSON strings are indexable by the Ontology; use the "normalize geometry" expression to prepare geometry prior to Ontology use.
Expression<String>
Source coordinate system - Coordinate system identifier formatted as "authority". For example, UTM zone 18N could be identified by EPSG:32618.
Literal<String>

Output type: Geometry

Examples

Example 1: Base case

Argument values:

GeoJSON string: geojson_string
Source coordinate system: EPSG:32618

geojson_string	Output
{"type":"Point","coordinates":[320000.0,4300000.0]}	{"type":"Point","coordinates":[-77.07368071728229,38.83040844313318]}
{"type":"LineString","coordinates":[[320000.0,4300000.0],[320100.0,4300000.0]]}	{"type":"LineString","coordinates":[[-77.07368071728229,38.83040844313318],[-77.0725293738795,38.83042888342659]]}
{"type":"Polygon","coordinates":[[[320000.0,4300000.0],[320100.0,4300000.0],[320000.0,4300100.0],[320000.0,4300000.0]]]}	{"type":"Polygon","coordinates":[[[-77.07368071728229,38.83040844313318],[-77.0725293738795,38.83042888342659],[-77.07370685720375,38.83130901341597],[-77.07368071728229,38.83040844313318]]]}

Example 2: Null case

Argument values:

GeoJSON string: geojson_string
Source coordinate system: EPSG:32618

geojson_string	Output
null	null

Example 3: Edge case

Argument values:

GeoJSON string: geojson_string
Source coordinate system: EPSG:32618

geojson_string	Output
invalid geojson string	null