Teradata Package for Python Function Reference | 17.10 - num_interior_ring - 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
- Product
- Teradata Package for Python
- Release Number
- 17.10
- Published
- April 2022
- Language
- English (United States)
- Last Update
- 2022-08-19
- lifecycle
- previous
- Product Category
- Teradata Vantage
- teradataml.geospatial.geodataframecolumn.GeoDataFrameColumn.num_interior_ring = num_interior_ring(self)
- DESCRIPTION:
Returns the number of interior rings of a Geometry type that represents
an ST_Polygon value.
PARAMETERS:
None
SUPPORTED GEOMETRY TYPES:
ST_Polygon
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 interior rings of ST_Polygon geometries in column 'polygons'.
# Let's select only few columns from GeoDataFrame and rows containing ST_Polygon geometries only.
pols = geodf.select(["skey", "polygons"])[geodf.polygons.geom_type == "ST_Polygon"]
pols.assign(res = pols.polygons.num_interior_ring())