Teradata Package for Python Function Reference | 17.10 - min_z - 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.min_z
DESCRIPTION:
    Returns the minimum Z coordinate of a Geometry value.
 
PARAMETERS:
    None
 
SUPPORTED GEOMETRY TYPES:
    All Geometry types.
 
RAISES:
    TypeError, ValueError, TeradataMlException
 
RETURNS:
    GeoDataFrameColumn
    Resultant column contains a NULL, if the Geometry is an empty set.
 
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.
    gdf = GeoDataFrame("sample_shapes")
    gdf = gdf.select(["skey", "polygons", "linestrings"])
    gdf
 
    # Example 1: Get the minimum Z coordinate of all Polygon geometries in column 'polygons'.
    gdf.assign(res=gdf.polygons.min_z)
 
    # Example 2: Filter the rows where minimum Z coordinate value of geometry in column 'polygons' is not None.
    gdf[gdf.polygons.min_z != None]