Teradata Package for Python Function Reference | 20.00 - point_heading - 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.geodataframe.GeoDataFrame.point_heading = point_heading(self, index)
DESCRIPTION:
    Returns the heading for the specified point of a GeoSequence.
    The value is calculated as the angle (in degrees) between a vertical
    line and the line segment from the specified point to the next point
    clockwise from the North.
 
PARAMETERS:
    index:
        Required Argument.
        Specifies the index of the point to return the heading of, where the index of
        the first point in the GeoSequence is 1.
        Types: int, str, ColumnExpression
 
SUPPORTED GEOMETRY TYPES:
    GeoSequence
 
RAISES:
    TypeError, ValueError, TeradataMlException
 
RETURNS:
    GeoDataFrame
 
EXAMPLES:
    from teradataml import GeoDataFrame, load_example_data
    from teradataml import Point, LineString, Polygon
    # 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.
    geoseq = geodf.select(["skey", "geosequence"])[geodf.skey.isin([1001, 1002])]
 
    # Example 1: Get the heading for the point at 1st index in Geosequence geometries in
    #            "geosequence" column.
    geoseq.point_heading(1)
 
    # Example 2: Get the heading for the point at 2nd index in Geosequence geometries in
    #            "geosequence" column.
    geoseq.point_heading(index=2)