Teradata Package for Python Function Reference | 20.00 - get_link - 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
- Product Category
- Teradata Vantage
- teradataml.geospatial.geodataframecolumn.GeoDataFrameColumn.get_link = get_link(self, index)
- DESCRIPTION:
Get the link ID of a specified point in a GeoSequence.
PARAMETERS:
index:
Required Argument.
Specifies the index of the point in the GeoSequence, where the index of the
first point 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)
# Select 'skey' and 'geosequence' column and filter the rows where geometries are not None.
geoseq = geodf.select(["skey", "geosequence"])[geodf.geosequence != None]
# Example 1: Get the link ID of the point at 1st position in a Geosequence geometry in 'geosequence' column.
geo_gl1 = geoseq.geosequence.get_link(1)
geoseq.assign(res = geo_gl1)
# Example 2: Get all the rows where the link ID of the point at 2nd position in a Geosequence
# geometry in 'geosequence' column is equal to 2.
geo_gl2 = geoseq.geosequence.get_link(index=2)
geoseq[geo_gl2 == 2]