cartodb-postgresql/doc/CDB_GreatCircle.md

Based on Paul Ramsey's blog post.

Using the function

Creates a great circle line.

SELECT CDB_GreatCircle(start_point, end_point) FROM table_name
-- Results a line reprsenting the great circle between the two points

Arguments

CDB_GreatCircle(start_point, end_point)

• start_point ST_Point indicating the start of the line.
• end_point ST_point indicating the end of the line.