Teradata Package for Python Function Reference | 20.00 - point - 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.point = point(self, position)
DESCRIPTION:
    Returns the specified point from a Geometry type that represents an
    ST_LineString or GeoSequence value.
    Note:
        *  This method returns a point having a Z coordinate if the input
          geometry is three-dimensional.
 
PARAMETERS:
    position:
        Required Argument.
        Specifies a value for the requested point, where the position of the
        first point is 1.
        Types: int, str, ColumnExpression
 
SUPPORTED GEOMETRY TYPES:
    ST_LineString and GeoSequence
 
RAISES:
    TypeError, ValueError, TeradataMlException
 
RETURNS:
    GeoDataFrameColumn containing Geometry values
 
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)
    
    # Let's select only few columns from GeoDataFrame, also filter rows containing
    # only ST_Linestring geometries.
    lines = geodf.select(["skey", "linestrings"])[geodf.linestrings.geom_type == "ST_Linestring"]
 
    # Example 1: Get the point specified at 1st position in ST_LineString geometries in column 'linestrings'.
    lines.assign(res = lines.linestrings.point(1))
 
    # Example 2: Get the point specified at 2nd position in ST_LineString geometries in column 'linestrings'.
    lines.assign(res = lines.linestrings.point(position=2))
 
    # Example 3: Filter the rows where the point specified at 1st position in ST_LineString geometries
    #            in column 'linestrings' is same as the specified Point GeometryType object.
    # Create an object of Point GeometryType.
    p1 = Point(1, 1)
    lines[lines.linestrings.point(1) == p1]