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

# GeoSeries.isna

> Detect missing values.

Detect missing values.

## Signature

```python theme={"system"}
isna() -> pspd.Series
```

## Returns

<ResponseField name="return" type="A boolean Series of the same size as the GeoSeries," />

<ResponseField name="return" type="True where a value is NA." />

**See also**

* `GeoSeries.notna`: inverse of isna
* `GeoSeries.is_empty`: detect empty geometries

## Examples

```python theme={"system"}
>>> from sedona.spark.geopandas import GeoSeries
>>> from shapely.geometry import Polygon
>>> s = GeoSeries(
...     [Polygon([(0, 0), (1, 1), (0, 1)]), None, Polygon([])]
... )
>>> s
0    POLYGON ((0 0, 1 1, 0 1, 0 0))
1                              None
2                     POLYGON EMPTY
dtype: geometry
```

```python theme={"system"}
>>> s.isna()
0    False
1     True
2    False
dtype: bool
```


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