get nearest point geopandas

gpd_nearest_point.py

import geopandas as gpd
from shapely.ops import nearest_points 

def nearest(row, df1, df2, geom1_col='geometry', geom2_col='geometry', src_column=None):
    """Find the nearest point and return the corresponding value from specified column."""
    # Construct a multipoint object
    geom_union = df2.unary_union
    # Find the geometry that is closest
    nearest = df2[geom2_col] == nearest_points(row[geom1_col], geom_union)[1]
    # Get the corresponding value from df2 (matching is based on the geometry)
    value = df2[nearest][src_column].values[0]
    return value
  
  a_df = gpd.GeoDataFrame()
  b_df = gpd.GeoDataFrame()
  
  a_df['nearest_id'] = a_df.apply(nearest, df1=a_df, df2=b_df, src_column='id', axis=1)