> ## Documentation Index
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> Use this file to discover all available pages before exploring further.

# GeoSeries.crs

> The Coordinate Reference System (CRS) as a pyproj.CRS object.

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
`pyproj.CRS.from_user_input() <pyproj.crs.CRS.from_user_input>`,
such as an authority string (eg "EPSG:4326") or a WKT string.

Note: This assumes all records in the GeoSeries are assumed to have the same CRS.

## Examples

```python theme={"system"}
>>> from shapely.geometry import Point
>>> from sedona.spark.geopandas import GeoSeries
>>> s = GeoSeries([Point(1, 1), Point(2, 2)], crs='EPSG:4326')
>>> 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

## Signature

```python theme={"system"}
GeoSeries.crs: Union[CRS, None]
```


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