zhangfengcdt commented on code in PR #2014:
URL: https://github.com/apache/sedona/pull/2014#discussion_r2175672198
##########
python/sedona/geopandas/geoseries.py:
##########
@@ -155,6 +162,176 @@ def __init__(
fastpath=fastpath,
)
+ if crs:
+ self.set_crs(crs, inplace=True)
+
+ @property
+ def crs(self) -> Union[CRS, None]:
+ """The Coordinate Reference System (CRS) as a ``pyproj.CRS`` object.
+
+ Returns None if the CRS is not set, and to set the value it
+ :getter: Returns a ``pyproj.CRS`` or None. When setting, the value
+ can be anything accepted by
+ :meth:`pyproj.CRS.from_user_input() <pyproj.crs.CRS.from_user_input>`,
+ such as an authority string (eg "EPSG:4326") or a WKT string.
+
+ Examples
+ --------
+ >>> s.crs # doctest: +SKIP
+ <Geographic 2D CRS: EPSG:4326>
+ Name: WGS 84
+ Axis Info [ellipsoidal]:
+ - Lat[north]: Geodetic latitude (degree)
+ - Lon[east]: Geodetic longitude (degree)
+ Area of Use:
+ - name: World
+ - bounds: (-180.0, -90.0, 180.0, 90.0)
+ Datum: World Geodetic System 1984
+ - Ellipsoid: WGS 84
+ - Prime Meridian: Greenwich
+
+ See Also
+ --------
+ GeoSeries.set_crs : assign CRS
+ GeoSeries.to_crs : re-project to another CRS
+ """
+ tmp_df = self._process_geometry_column("ST_SRID", rename="crs")
+ srid = tmp_df.to_pandas().iloc[0]
Review Comment:
You can also do tmp_df._to_spark_pandas_df() that returns the pspd.DataFrame
(pyspark).
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