I want to check if points layer that I have intersect with polygons layer that I have, as Boolean column in the points dataframe.
I have two GeoPandas dataframes, the first one is many points and looks like this:

>>>ID  geometry
0  12  POINT (5.0279 7.4547)
1  45  POINT (6.6539 12.139)

and the second dataframe is one layer of many different polygons that looks something like this:

>>>name     code   geometry
0  Desert   12     POLYGON ((5.52013 13.8902, 5.5265 13.892,...)
1  Water    24     POLYGON ((5.53756 13.88472, 5.5291 13.8791,...)

I'm trying to check if there is any intersection between the points layer and the regions layer. For that I have determined the crs and then used intersects :

regions=regions.to_crs({'init': 'epsg:4326'})
points=points.set_crs({'init': 'epsg:4326'})

A The script runs with the following warnings:

FutureWarning: '+init=:' syntax is deprecated. ':' is the preferred initialization method. When making the change, be mindful of axis order changes: https://pyproj4.github.io/pyproj/stable/gotchas.html#axis-order-changes-in-proj-6 return _prepare_from_string(" ".join(pjargs)) /opt/conda/lib/python3.8/site-packages/geopandas/base.py:39: UserWarning: The indices of the two GeoSeries are different.
warn("The indices of the two GeoSeries are different.")

Then when I check the results the only value is False, like all th epoints do not intersect:


*I saw on QGIS that the there are points that intersect and there are points that do not so there is no way this result is true

*I have checked the dtypes - each one of my geodataframes has one column that is geometry and called geometry.

My end goal: to add new column in the points geodataframe that will tell if it intersects the regions or not.


Intersects is row-wise operation which aligns both GeoSeries and check is a geometry A in row 0 intersects geometry B in row 0.

For check if there is any intersection, use spatial index.

import numpy as np

inp, res = regions.sindex.query_bulk(points.geometry, predicate='intersects')
points['intersects'] = np.isin(np.arange(0, len(points)), inp)

Regarding the CRS warning, just remove init part and pass it as a string.


query_bulk requires geopandas 0.8 and is not yet documented, but wraps pygeos.STRtree.query_bulk, so you can check that docs - https://pygeos.readthedocs.io/en/latest/strtree.html#pygeos.strtree.STRtree.query_bulk.

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  • thank you for your answer, the problem is that even though the geometry columns are type geometry, when I try this I get error "TypeError: Got geometry of type <class 'str'>, geometry must be a shapely geometry." – Reut Sep 30 at 8:33
  • That means that your geometry column contains strings instead of shapely.geometry. You will have to convert those incorrect ones. See stackoverflow.com/questions/56433138/… – martinfleis Sep 30 at 8:35
  • 1
    I ffound the problem- I had also to put ".geometry" after the points dataframe in the beackets. thank you for your answer! – Reut Sep 30 at 10:37
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    @hhh The code above will work even without pygeos with geopandas 0.8 – martinfleis Nov 3 at 16:53
  • 1
    @hhh only optionally - geopandas.readthedocs.io/en/latest/getting_started/… – martinfleis Nov 3 at 19:14

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