modules/neighbors.py

import geopandas as gpd
from shapely.geometry import Polygon

# Sample DataFrame with geometries (use your own data)
data = {'ID': [1, 2, 3],
        'geometry': [Polygon([(0, 0), (0, 2), (2, 2), (2, 0)]),
                    Polygon([(2, 0), (2, 2), (4, 2), (4, 0)]),
                    Polygon([(4, 0), (4, 2), (6, 2), (6, 0)])]}
gdf = gpd.GeoDataFrame(data, crs="EPSG:4326")

# Create a new column to store the neighboring IDs
gdf['neighbors'] = None

# Iterate through the GeoDataFrame to find neighbors
for index, row in gdf.iterrows():
    neighbors = []
    for other_index, other_row in gdf.iterrows():
        if index != other_index and row['geometry'].touches(other_row['geometry']):
            neighbors.append(other_row['ID'])
    gdf.at[index, 'neighbors'] = neighbors

# Display the DataFrame with neighbors
print(gdf[['ID', 'neighbors']])



def find_neighbors(geom_df):
    geom_df['neighbors'] = geom_df.apply(lambda row: find_single_neighbors(row, geom_df), axis=1)
    return geom_df

def find_single_neighbors(row, geom_df):
    neighbors = []
    for other_index, other_row in geom_df.iterrows():
        if row.name != other_index and row['geometry'].touches(other_row['geometry']):
            neighbors.append(other_row['ID'])
    return neighbors

# Example usage:
# Replace 'your_data.geojson' with the path to your GeoJSON file or any other supported format
# Make sure the GeoDataFrame has a 'geometry' column
your_gdf = gpd.read_file('your_data.geojson')

# Call the function to find neighbors
result_gdf = find_neighbors(your_gdf)

# Print the resulting GeoDataFrame
print(result_gdf)