spa-l1-paris-amenity-within

Status: done
Score: 100
Duration: 0:42
Cost: 0.32¢
Model: deepseek/deepseek-v4-flash

Map (reference ← swipe → agent)

0:00
I'm putting together a neighbourhood demographic crosswalk for the INSEE census team and need each amenity tagged with the Paris arrondissement it falls inside. Can you join `amenities` to `arrondissements` and write the result to `amenity_to_arrondissement.csv` with one row per amenity? The columns are `osm_id`, `amenity_class`, `arrondissement_number` (integer), and `arrondissement_name` (string).
0:00
System info
{
  "adapter": "openrouter",
  "model": "deepseek/deepseek-v4-flash",
  "base_url": "https://openrouter.ai/api/v1"
}
0:02
Let me first explore the working directory to find the data files.
0:02
Bash ls /work/
paris_amenities.gpkg
0:05
Let me first explore the data to understand the schema of both layers.
0:05
Bash cd /work && python3 -c "
cd /work && python3 -c "
import geopandas as gpd
import fiona

# List layers in the file
layers = fiona.listlayers('paris_amenities.gpkg')
print('Layers:', layers)
"
Layers: ['amenities', 'arrondissements']
0:10
Great, the file has two layers: `amenities` and `arrondissements`. Let me inspect their schemas and preview the data.
0:10
Bash cd /work && python3 -c "
cd /work && python3 -c "
import geopandas as gpd

amenities = gpd.read_file('paris_amenities.gpkg', layer='amenities')
arrondissements = gpd.read_file('paris_amenities.gpkg', layer='arrondissements')

print('=== Amenities columns:', list(amenities.columns))
print('=== Amenities CRS:', amenities.crs)
print('=== Amenities shape:', amenities.shape)
print(amenities.head(10).to_string())

print()
print('=== Arrondissements columns:', list(arrondissements.columns))
print('=== Arrondissements CRS:', arrondissements.crs)
print('=== Arrondissements shape:', arrondissements.shape)
print(arrondissements.head(10).to_string())
"
=== Amenities columns: ['osm_id', 'amenity_class', 'name', 'geometry']
=== Amenities CRS: EPSG:2154
=== Amenities shape: (85, 4)
       osm_id amenity_class                        name                        geometry
0  9000000000    restaurant   Le Grand Amour Restaurant  POINT (652773.528 6864033.347)
1  9000000001    restaurant                      Talego   POINT (652322.91 6861774.142)
2  9000000002        bakery                     Mamiche  POINT (653028.103 6863582.051)
3  9000000003        bakery                      MyuMyu  POINT (653087.577 6858190.655)
4  9000000004    restaurant                     Rivages   POINT (650836.831 6863603.61)
5  9000000005    restaurant                        Seto  POINT (648136.131 6860668.264)
6  9000000006    restaurant      Les Petits Campagnards  POINT (655325.131 6863817.182)
7  9000000007          cafe  Maison Christine Champault  POINT (651260.332 6861602.405)
8  9000000008    restaurant                    Proibido  POINT (651294.338 6865384.588)
9  9000000009          cafe                    Café Zed  POINT (652311.708 6860216.575)

=== Arrondissements columns: ['id', 'name', 'geometry']
=== Arrondissements CRS: EPSG:2154
=== Arrondissements shape: (20, 3)
                                     id                      name                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            geometry
0  0cef9694-93f0-4acf-a44f-f54a01fce855  Paris 13e Arrondissement                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 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651869.177 6857863.153, 651840.43 6857717.337, 651837.951 6857698.276, 651836.206 6857679.043, 651836.072 6857676.253, 651827.749 6857499.967, 651865.954 6857478.445, 651861.715 6857537.514, 652007.983 6857514.829, 652022.343 6857512.587, 652044.198 6857509.204, 652064.249 6857523.804, 652078.81 6857534.392, 652108.197 6857555.621, 652122.233 6857565.813, 652137.895 6857577.181, 652150.631 6857586.427, 652160.464 6857593.574, 652164.401 6857596.41, 652174.877 6857604.007, 652448.903 6857802.594, 652704.918 6857515.663, 652755.98 6857516.17, 653011.548 6857518.574, 653255.012 6857520.876, 653317.012 6857550.132, 653352.58 6857567.059, 653458.445 6857614.255, 653518.475 6857646.231, 654047.126 6857898.644, 654080.73 6857914.756, 654185.04 6857964.792, 654314.057 6858030.591, 654316.608 6858031.894, 654320.242 6858033.744, 654385.141 6858065.146, 654408.676 6858076.536, 654410.858 6858077.587, 654414.189 6858079.195, 654532.979 6858136.562, 654590.02 6858216.753, 654770.688 6858311.892, 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1  0e2667a3-715f-45ef-8fd5-7cdba7344a12   Paris 6e Arrondissement                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
[... truncated ...], 648328.951 6864056.108, 648322.395 6864043.112, 648292.173 6863981.387, 648373.74 6863836.443, 648470.162 6863664.657, 648476.341 6863647.633, 648485.432 6863623.177, 648507.355 6863565.769, 648519.008 6863534.874, 648522.771 6863524.988, 648530.226 6863506.196, 648564.339 6863413.741, 648566.861 6863407.035, 648571.334 6863395.197, 648576.106 6863371.691, 648587.147 6863313.88, 648587.281 6863313.189, 648592.125 6863287.837, 648594.53 6863275.261, 648596.886 6863263.008, 648597.938 6863257.572, 648604.707 6863222.562, 648609.762 6863196.152, 648612.014 6863184.533, 648614.657 6863169.932, 648623.804 6863119.343, 648631.734 6863081.987, 648640.238 6863038.277, 648661.997 6863008.394, 648682.448 6862995.591, 648758.167 6862948.217, 648762.546 6862831.207, 648795.179 6862831.997, 649407.606 6862842.54, 649801.043 6862849.525, 650006.458 6862854.198, 650020.378 6862851.02, 650070.797 6862825.688, 650103.359 6862809.65, 650178.812 6862772.505, 650207.296 6862825.658, 650228.89 6862867.806, 650233.082 6862875.754, 650269.224 6862944.344, 650286.834 6862978.019, 650287.863 6862979.923, 650293.495 6862990.75, 650294.845 6862993.341, 650297.255 6862998.024, 650301.717 6863006.715, 650314.491 6863030.913, 650359.563 6863117.841, 650371.308 6863142.572, 650372.014 6863143.689, 650378.075 6863153.244, 650375.11 6863154.771, 650451.149 6863307.376, 650453.072 6863311.685, 650454.021 6863313.79, 650456.651 6863320.184, 650504.031 6863421.093, 650506.887 6863424.85, 650510.056 6863425.634, 650501.349 6863465.174, 650499.788 6863472.248, 650499.354 6863474.765, 650497.666 6863481.429, 650549.468 6863493.986, 650566.571 6863604.362, 650567.465 6863609.359, 650603.81 6863813.68, 650607.655 6863836.288, 650617.731 6863890.056, 650642.028 6863942.903, 650641.251 6863973.045, 650637.722 6863982.483, 650631.202 6864005.779, 650620.571 6864077.795, 650617.392 6864095.569, 650613.174 6864120.436, 650610.895 6864135.312, 650606.851 6864161.668, 650611.143 6864162.654, 650619.955 6864164.692, 650626.797 6864166.268, 650628.957 6864209.641, 650629.739 6864226.581, 650632.307 6864304.1, 650633.042 6864323.176, 650633.212 6864327.644, 650633.361 6864331.324, 650633.587 6864337.282, 650633.671 6864341.096, 650635.835 6864396.978, 650636.221 6864406.972, 650636.528 6864414.62, 650637.017 6864429.828, 650639.642 6864510.682, 650639.925 6864518.03, 650643.21 6864604.873, 650643.392 6864614.179, 650643.696 6864633.514, 650645.759 6864701.685, 650646.003 6864712.27, 650647.557 6864742.314, 650647.929 6864748.95, 650648.008 6864752.986, 650649.47 6864793.728, 650649.76 6864802.789, 650658.375 6865009.94, 650658.396 6865023.562, 650659.118 6865039.446))
8  5134a455-e91f-4fdb-8638-c33ee7cb1383  Paris 19e Arrondissement                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           POLYGON ((655001.715 6867044.106, 654913.846 6867069.944, 654873.215 6867081.892, 654554.017 6867074.704, 654475.141 6867072.933, 654253.548 6867067.274, 653928.887 6867059.284, 653836.614 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9  5537e76e-52db-4342-938d-a91168f4e6a7   Paris 5e Arrondissement                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         POLYGON ((651800.19 6861455.647, 651796.915 6861445.755, 651774.534 6861375.364, 651766.087 6861346.223, 651756.01 6861325.79, 651699.285 6861187.743, 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653267.204 6860394.179, 653339.29 6860538.488, 653381.16 6860622.217, 653384.725 6860632.096, 653386.152 6860637.889, 653389.382 6860648.059, 653393.077 6860655.725, 653399.768 6860665.478, 653408.541 6860674.915, 653473.234 6860729.416, 653380.048 6860838.916, 653356.956 6860864.933, 653215.846 6861031.099, 653154.007 6861090.811, 653145.094 6861099.423, 653068.429 6861165.161, 653024.402 6861202.925, 653000.161 6861221.77, 652978.399 6861236.691, 652951.019 6861253.026, 652913.392 6861272.713, 652886.276 6861286.222, 652808.406 6861324.896, 652718.165 6861369.956, 652652.017 6861400.642, 652574.588 6861436.302, 652541.975 6861444.142, 652487.225 6861456.033, 652426.826 6861476.933, 652411.462 6861482.653, 652373.003 6861497.892, 652321.187 6861518.422, 652307.595 6861524.483, 652294.048 6861531.511, 652276.829 6861540.883, 652201.129 6861588.188, 652181.226 6861601.34, 652085.811 6861668.302, 651910.457 6861755.512, 651886.253 6861727.713, 651873.096 6861686.122, 651869.964 6861675.729, 651851.246 6861612.368, 651821.183 6861520.724, 651817.929 6861511.51, 651814.881 6861502.384, 651808.835 6861483.041, 651802.39 6861462.501, 651800.19 6861455.647))
0:18
Let me understand the data:

1. **amenities** table has columns: `osm_id`, `amenity_class`, `name`, `geometry` (points, CRS: EPSG:2154)
2. **arrondissements** table has columns: `id`, `name`, `geometry` (polygons, CRS: EPSG:2154)

I need to perform a spatial join to find which arrondissement each amenity falls inside, then output to CSV with columns: `osm_id`, `amenity_class`, `arrondissement_number` (integer), `arrondissement_name` (string).

The arrondissement names are like "Paris 13e Arrondissement". I need to extract the number from the name. Let me look at the names more carefully.

From the output I can see:
- "Paris 13e Arrondissement"
- "Paris 6e Arrondissement"
- "Paris 19e Arrondissement"
- "Paris 5e Arrondissement"

So the pattern is "Paris Xe Arrondissement" where X is the number. I'll need to extract the numeric part.

Let me write a Python script to do the spatial join.
0:18
Bash cd /work && python3 -c "
cd /work && python3 -c "
import geopandas as gpd

arr = gpd.read_file('paris_amenities.gpkg', layer='arrondissements')
print(arr['name'].tolist())
"
['Paris 13e Arrondissement', 'Paris 6e Arrondissement', 'Paris 11e Arrondissement', 'Paris 3e Arrondissement', 'Paris 2e Arrondissement', 'Paris 10e Arrondissement', 'Paris 20e Arrondissement', 'Paris 8e Arrondissement', 'Paris 19e Arrondissement', 'Paris 5e Arrondissement', 'Paris 17e Arrondissement', 'Paris 9e Arrondissement', 'Paris 16e Arrondissement', 'Paris 14e Arrondissement', 'Paris 12e Arrondissement', 'Paris 4e Arrondissement', 'Paris 18e Arrondissement', 'Paris 7e Arrondissement', 'Paris 1er Arrondissement', 'Paris 15e Arrondissement']
0:25
Now I need to do a spatial join between the amenities (points) and arrondissements (polygons) to assign each amenity to its containing arrondissement. I'll extract the arrondissement number from the name (e.g., "Paris 13e Arrondissement" -> 13, "Paris 1er Arrondissement" -> 1).

Let me write the Python script.
0:25
Write /work/solve.py
content · 26 lines · py
import geopandas as gpd
import re

# Read data
amenities = gpd.read_file('paris_amenities.gpkg', layer='amenities')
arrondissements = gpd.read_file('paris_amenities.gpkg', layer='arrondissements')

# Both are in EPSG:2154, so spatial join works directly
joined = gpd.sjoin(amenities, arrondissements, how='left', predicate='within')

# Extract arrondissement number from name (e.g. 'Paris 13e Arrondissement' -> 13, 'Paris 1er Arrondissement' -> 1)
def parse_arrondissement_number(name):
    match = re.search(r'(\d+)', name)
    return int(match.group(1)) if match else None

joined['arrondissement_number'] = joined['name_right'].apply(parse_arrondissement_number)
joined['arrondissement_name'] = joined['name_right']

# Build output DataFrame with required columns
result = joined[['osm_id', 'amenity_class', 'arrondissement_number', 'arrondissement_name']].copy()

# Write to CSV (one row per amenity, no geometry)
result.to_csv('/work/amenity_to_arrondissement.csv', index=False)

print(f"Wrote {len(result)} rows to amenity_to_arrondissement.csv")
print(result.head(10).to_string())
Wrote /work/solve.py (1088 chars).
0:28
Let me run the script.
0:28
Bash cd /work && python solve.py
Wrote 85 rows to amenity_to_arrondissement.csv
       osm_id amenity_class  arrondissement_number       arrondissement_name
0  9000000000    restaurant                     10  Paris 10e Arrondissement
1  9000000001    restaurant                      4   Paris 4e Arrondissement
2  9000000002        bakery                     10  Paris 10e Arrondissement
3  9000000003        bakery                     13  Paris 13e Arrondissement
4  9000000004    restaurant                      9   Paris 9e Arrondissement
5  9000000005    restaurant                     15  Paris 15e Arrondissement
6  9000000006    restaurant                     20  Paris 20e Arrondissement
7  9000000007          cafe                      6   Paris 6e Arrondissement
8  9000000008    restaurant                     18  Paris 18e Arrondissement
9  9000000009          cafe                      5   Paris 5e Arrondissement
0:34
The join worked well. Let me verify that all 85 amenities found a match (none are null).
0:34
Bash cd /work && python3 -c "
cd /work && python3 -c "
import pandas as pd
df = pd.read_csv('amenity_to_arrondissement.csv')
print('Total rows:', len(df))
print('Null arrondissement_number:', df['arrondissement_number'].isna().sum())
print('Null arrondissement_name:', df['arrondissement_name'].isna().sum())
print()
print(df.to_string())
"
Total rows: 85
Null arrondissement_number: 0
Null arrondissement_name: 0

        osm_id amenity_class  arrondissement_number       arrondissement_name
0   9000000000    restaurant                     10  Paris 10e Arrondissement
1   9000000001    restaurant                      4   Paris 4e Arrondissement
2   9000000002        bakery                     10  Paris 10e Arrondissement
3   9000000003        bakery                     13  Paris 13e Arrondissement
4   9000000004    restaurant                      9   Paris 9e Arrondissement
5   9000000005    restaurant                     15  Paris 15e Arrondissement
6   9000000006    restaurant                     20  Paris 20e Arrondissement
7   9000000007          cafe                      6   Paris 6e Arrondissement
8   9000000008    restaurant                     18  Paris 18e Arrondissement
9   9000000009          cafe                      5   Paris 5e Arrondissement
10  9000000010    restaurant                     17  Paris 17e Arrondissement
11  9000000011    restaurant                      6   Paris 6e Arrondissement
12  9000000012    restaurant                      8   Paris 8e Arrondissement
13  9000000013    restaurant                      1  Paris 1er Arrondissement
14  9000000014    restaurant                     10  Paris 10e Arrondissement
15  9000000015          cafe                     15  Paris 15e Arrondissement
16  9000000016          cafe                     12  Paris 12e Arrondissement
17  9000000017        bakery                     15  Paris 15e Arrondissement
18  9000000018          cafe                      3   Paris 3e Arrondissement
19  9000000019        bakery                      9   Paris 9e Arrondissement
20  9000000020    restaurant                     19  Paris 19e Arrondissement
21  9000000021          cafe                      9   Paris 9e Arrondissement
22  9000000022    restaurant                     15  Paris 15e Arrondissement
23  9000000023        bakery                      7   Paris 7e Arrondissement
24  9000000024      pharmacy                      9   Paris 9e Arrondissement
25  9000000025       library                     10  Paris 10e Arrondissement
26  9000000026        bakery                     10  Paris 10e Arrondissement
27  9000000027    restaurant                      8   Paris 8e Arrondissement
28  9000000028        bakery                     18  Paris 18e Arrondissement
29  9000000029    restaurant                     15  Paris 15e Arrondissement
30  9000000030    restaurant                     11  Paris 11e Arrondissement
31  9000000031        bakery                     15  Paris 15e Arrondissement
32  9000000032        bakery                     19  Paris 19e Arrondissement
33  9000000033      pharmacy                     14  Paris 14e Arrondissement
34  9000000034      pharmacy                     15  Paris 15e Arrondissement
35  9000000035          cafe                      1  Paris 1er Arrondissement
36  9000000036    restaurant                     17  Paris 17e Arrondissement
37  9000000037          cafe                     15  Paris 15e Arrondissement
38  9000000038       library                      7   Paris 7e Arrondissement
39  9000000039        bakery                     15  Paris 15e Arrondissement
40  9000000040        bakery                     15  Paris 15e Arrondissement
41  9000000041       library                     13  Paris 13e Arrondissement
42  9000000042      pharmacy                     19  Paris 19e Arrondissement
43  9000000043          cafe                      6   Paris 6e Arrondissement
44  9000000044        bakery                     13  Paris 13e Arrondissement
45  9000000045       library                     13  Paris 13e Arrondissement
46  9000000046          cafe                     18  Paris 18e Arrondissement
47  9000000047          cafe                      1  Paris 1er Arrondissement
48  9000000048      pharmacy                     15  Paris 15e Arrondissement
49  9000000049        bakery                      8   Paris 8e Arrondissement
50  9000000050        bakery                      5   Paris 5e Arrondissement
51  9000000051      pharmacy                      2   Paris 2e Arrondissement
52  9000000052        bakery                      5   Paris 5e Arrondissement
53  9000000053          cafe                      1  Paris 1er Arrondissement
54  9000000054      pharmacy                      8   Paris 8e Arrondissement
55  9000000055      pharmacy                     14  Paris 14e Arrondissement
56  9000000056          cafe                      6   Paris 6e Arrondissement
57  9000000057          cafe                     16  Paris 16e Arrondissement
58  9000000058          cafe                     15  Paris 15e Arrondissement
59  9000000059          cafe                      9   Paris 9e Arrondissement
60  9000000060      pharmacy                      3   Paris 3e Arrondissement
61  9000000061      pharmacy                     16  Paris 16e Arrondissement
62  9000000062          cafe                     17  Paris 17e Arrondissement
63  9000000063          cafe                     19  Paris 19e Arrondissement
64  9000000064          cafe                     18  Paris 18e Arrondissement
65  9000000065          cafe                     15  Paris 15e Arrondissement
66  9000000066      pharmacy                     16  Paris 16e Arrondissement
67  9000000067       library                     10  Paris 10e Arrondissement
68  9000000068      pharmacy                     19  Paris 19e Arrondissement
69  9000000069      pharmacy                      4   Paris 4e Arrondissement
70  9000000070      pharmacy                     13  Paris 13e Arrondissement
71  9000000071      pharmacy                      9   Paris 9e Arrondissement
72  9000000072       library                      7   Paris 7e Arrondissement
73  9000000073       library                     19  Paris 19e Arrondissement
74  9000000074      pharmacy                     12  Paris 12e Arrondissement
75  9000000075      pharmacy                      7   Paris 7e Arrondissement
76  9000000076       library                     10  Paris 10e Arrondissement
77  9000000077       library                     14  Paris 14e Arrondissement
78  9000000078       library                     19  Paris 19e Arrondissement
79  9000000079       library                      7   Paris 7e Arrondissement
80  9000000080       library                      5   Paris 5e Arrondissement
81  9000000081       library                      5   Paris 5e Arrondissement
82  9000000082       library                     12  Paris 12e Arrondissement
83  9000000083       library                      1  Paris 1er Arrondissement
84  9000000084       library                     13  Paris 13e Arrondissement
0:40
The file has been successfully created. All 85 amenities are matched to their arrondissements with no null values. Let me confirm the file is properly written.
0:40