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
- 20.00.00.03
- Published
- December 2024
- ft:locale
- en-US
- ft:lastEdition
- 2024-12-19
- dita:id
- TeradataPython_FxRef_Enterprise_2000
- lifecycle
- latest
- Product Category
- Teradata Vantage
- teradataml.geospatial.geodataframecolumn.GeoDataFrameColumn.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:
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)
# 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.assign(res = geoseq.geosequence.point_heading(1))
# Example 2: Get the heading for the point at 2nd index in Geosequence geometries in
# "geosequence" column.
geoseq.assign(res = geoseq.geosequence.point_heading(index=2))