ST_IsEmpty takes a geometry column and returns a boolean column. The output returns True if the geometry is empty;
otherwise, it returns False.
| Function | Syntax |
|---|---|
| Python | is |
| SQL | ST |
| Scala | is |
For more details, go to the GeoAnalytics Engine API reference for is_empty.
This function implements the OpenGIS Simple Features Implementation Specification for SQL 1.2.1
Examples
from geoanalytics.sql import functions as ST
data = [
("POINT (-2533858.73 8107527.81)",),
("POINT EMPTY", )
]
df = spark.createDataFrame(data, ["wkt"])\
.select(ST.geom_from_text("wkt", srid=54008).alias("geometry"))
df.select(ST.is_empty("geometry").alias("is_empty")).show()Result
+--------+
|is_empty|
+--------+
| false|
| true|
+--------+Version table
| Release | Notes |
|---|---|
1.0.0 | Python and SQL functions introduced |
1.5.0 | Scala function introduced |