# geopandas.GeoSeries.difference¶

`GeoSeries.``difference`(other, align=True)

Returns a `GeoSeries` of the points in each aligned geometry that are not in other.

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

Parameters
otherGeoseries or geometric object

The Geoseries (elementwise) or geometric object to find the difference to.

alignbool (default True)

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

Returns
GeoSeries

Examples

```>>> from shapely.geometry import Polygon, LineString, Point
>>> s = geopandas.GeoSeries(
...     [
...         Polygon([(0, 0), (2, 2), (0, 2)]),
...         Polygon([(0, 0), (2, 2), (0, 2)]),
...         LineString([(0, 0), (2, 2)]),
...         LineString([(2, 0), (0, 2)]),
...         Point(0, 1),
...     ],
... )
>>> s2 = geopandas.GeoSeries(
...     [
...         Polygon([(0, 0), (1, 1), (0, 1)]),
...         LineString([(1, 0), (1, 3)]),
...         LineString([(2, 0), (0, 2)]),
...         Point(1, 1),
...         Point(0, 1),
...     ],
...     index=range(1, 6),
... )
```
```>>> s
0    POLYGON ((0.00000 0.00000, 2.00000 2.00000, 0....
1    POLYGON ((0.00000 0.00000, 2.00000 2.00000, 0....
2        LINESTRING (0.00000 0.00000, 2.00000 2.00000)
3        LINESTRING (2.00000 0.00000, 0.00000 2.00000)
4                              POINT (0.00000 1.00000)
dtype: geometry
```
```>>> s2
1    POLYGON ((0.00000 0.00000, 1.00000 1.00000, 0....
2        LINESTRING (1.00000 0.00000, 1.00000 3.00000)
3        LINESTRING (2.00000 0.00000, 0.00000 2.00000)
4                              POINT (1.00000 1.00000)
5                              POINT (0.00000 1.00000)
dtype: geometry
```

We can do difference of each geometry and a single shapely geometry:

```>>> s.difference(Polygon([(0, 0), (1, 1), (0, 1)]))
0    POLYGON ((0.00000 1.00000, 0.00000 2.00000, 2....
1    POLYGON ((0.00000 1.00000, 0.00000 2.00000, 2....
2        LINESTRING (1.00000 1.00000, 2.00000 2.00000)
3    MULTILINESTRING ((2.00000 0.00000, 1.00000 1.0...
4                                          POINT EMPTY
dtype: geometry
```

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.difference(s2, align=True)
0                                                 None
1    POLYGON ((0.00000 1.00000, 0.00000 2.00000, 2....
2    MULTILINESTRING ((0.00000 0.00000, 1.00000 1.0...
3                                     LINESTRING EMPTY
4                              POINT (0.00000 1.00000)
5                                                 None
dtype: geometry
```
```>>> s.difference(s2, align=False)
0    POLYGON ((0.00000 1.00000, 0.00000 2.00000, 2....
1    POLYGON ((1.00000 1.00000, 0.00000 0.00000, 0....
2    MULTILINESTRING ((0.00000 0.00000, 1.00000 1.0...
3        LINESTRING (2.00000 0.00000, 0.00000 2.00000)
4                                          POINT EMPTY
dtype: geometry
```