ST_StartPoint

ST_StartPoint takes a linestring column and returns a point column. The point column represents the first point of the input linestring.

Function	Syntax
Python	`start_point(linestring)`
SQL	`ST_StartPoint(linestring)`

For more details, go to the GeoAnalytics Engine API reference for start_point.

This function implements the OpenGIS Simple Features Implementation Specification for SQL 1.2.1.

Examples

Python

SQL

Use dark colors for code blocksCopy
from geoanalytics.sql import functions as ST, Linestring

df = spark.createDataFrame([(Linestring([[[5,5],[7,6],[6,6],[4,2]]]),)], ["linestring"])

df.select(ST.start_point("linestring").alias("start_point")).show()

Result
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+-------------+
|  start_point|
+-------------+
|{"x":5,"y":5}|
+-------------+

Version table

Release	Notes
1.0.0	Function introduced

SQL functions
Data sources
Coordinate systems and transformations

ST_StartPoint

Examples

Version table

Related topics