Teradata Package for Python Function Reference | 20.00 - num_points - Teradata Package for Python - Look here for syntax, methods and examples for the functions included in the Teradata Package for Python.

Teradata® Package for Python Function Reference - 20.00

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Teradata Package for Python
Release Number
20.00
Published
March 2024
Language
English (United States)
Last Update
2024-04-10
dita:id
TeradataPython_FxRef_Enterprise_2000
Product Category
Teradata Vantage
teradataml.geospatial.geodataframecolumn.GeoDataFrameColumn.num_points = num_points(self)
DESCRIPTION:
    Returns the number of points in a Geometry type that represents an
    ST_LineString or GeoSequence value.
 
PARAMETERS:
    None
 
SUPPORTED GEOMETRY TYPES:
    ST_LineString and GeoSequence
 
RAISES:
    TypeError, ValueError, TeradataMlException
 
RETURNS:
    GeoDataFrameColumn
 
EXAMPLES:
    from teradataml import GeoDataFrame, load_example_data
    from teradataml import Point, LineString, Polygon, GeometryCollection
    # Load example data.
    load_example_data("geodataframe", "sample_shapes")
    # Create a GeoDataFrame.
    geodf = GeoDataFrame("sample_shapes")
    print(geodf)
 
    # Example 1: Get the number of points in a geometry in column 'linestrings'.
    # Let's select only few columns from GeoDataFrame and rows containing ST_Linestrings geometries only.
    lines = geodf.select(["skey", "linestrings"])[geodf.linestrings.geom_type == "ST_Linestring"]
    lines.assign(res = lines.linestrings.num_points())