# geopandas.GeoSeries.covered_by#

GeoSeries.covered_by(other, align=True)[source]#

Returns a `Series` of `dtype('bool')` with value `True` for each aligned geometry that is entirely covered by other.

An object A is said to cover another object B if no points of B lie in the exterior of A.

The operation works on a 1-to-1 row-wise manner:

Parameters:
otherGeoseries or geometric object

The Geoseries (elementwise) or geometric object to check is being covered.

alignbool (default True)

If True, automatically aligns GeoSeries based on their indices. If False, the order of elements is preserved.

Returns:
Series (bool)

Notes

This method works in a row-wise manner. It does not check if an element of one GeoSeries is `covered_by` any element of the other one.

Examples

```>>> from shapely.geometry import Polygon, LineString, Point
>>> s = geopandas.GeoSeries(
...     [
...         Polygon([(0.5, 0.5), (1.5, 0.5), (1.5, 1.5), (0.5, 1.5)]),
...         Polygon([(0, 0), (2, 0), (2, 2), (0, 2)]),
...         LineString([(1, 1), (1.5, 1.5)]),
...         Point(0, 0),
...     ],
... )
>>> s2 = geopandas.GeoSeries(
...     [
...         Polygon([(0, 0), (2, 0), (2, 2), (0, 2)]),
...         Polygon([(0, 0), (2, 2), (0, 2)]),
...         LineString([(0, 0), (2, 2)]),
...         Point(0, 0),
...     ],
...     index=range(1, 5),
... )
```
```>>> s
0    POLYGON ((0.50000 0.50000, 1.50000 0.50000, 1....
1    POLYGON ((0.00000 0.00000, 2.00000 0.00000, 2....
2        LINESTRING (1.00000 1.00000, 1.50000 1.50000)
3                              POINT (0.00000 0.00000)
dtype: geometry
```
```>>> s2
1    POLYGON ((0.00000 0.00000, 2.00000 0.00000, 2....
2    POLYGON ((0.00000 0.00000, 2.00000 2.00000, 0....
3        LINESTRING (0.00000 0.00000, 2.00000 2.00000)
4                              POINT (0.00000 0.00000)
dtype: geometry
```

We can check if each geometry of GeoSeries is covered by a single geometry:

```>>> poly = Polygon([(0, 0), (2, 0), (2, 2), (0, 2)])
>>> s.covered_by(poly)
0    True
1    True
2    True
3    True
dtype: bool
```

We can also check two GeoSeries against each other, row by row. The GeoSeries above have different indices. We can either align both GeoSeries based on index values and compare elements with the same index using `align=True` or ignore index and compare elements based on their matching order using `align=False`:

```>>> s.covered_by(s2, align=True)
0    False
1     True
2     True
3     True
4    False
dtype: bool
```
```>>> s.covered_by(s2, align=False)
0     True
1    False
2     True
3     True
dtype: bool
```