/aggregate/convexhull

URL: http://GPUDB_IP_ADDRESS:GPUDB_PORT/aggregate/convexhull

Calculates and returns the convex hull for the values in a table specified by input parameter table_name.

Input Parameter Description

Name	Type	Description
table_name	string	Name of table on which the operation will be performed. Must be an existing table. It cannot be a collection.
x_column_name	string	Name of the column containing the x coordinates of the points for the operation being performed.
y_column_name	string	Name of the column containing the y coordinates of the points for the operation being performed.
options	map of string to strings	Optional parameters. The default value is an empty map ( {} ).

Output Parameter Description

The GPUdb server embeds the endpoint response inside a standard response structure which contains status information and the actual response to the query. Here is a description of the various fields of the wrapper:

Name	Type	Description
status	String	'OK' or 'ERROR'
message	String	Empty if success or an error message
data_type	String	'aggregate_convex_hull_request' or 'none' in case of an error
data	String	Empty string
data_str	JSON or String	This embedded JSON represents the result of the /aggregate/convexhull endpoint: Name Type Description x_vector array of doubles Array of x coordinates of the resulting convex set. y_vector array of doubles Array of y coordinates of the resulting convex set. count int Count of the number of points in the convex set. is_valid boolean   Empty string in case of an error.