geo-l1-tokyo-busstop-buffer
Map (reference ← swipe → agent)
0:00
I'm refreshing the 400 m walkable-catchment layer for `tokyo_connectors.geojson` so I can join the result to our ridership table. Can you draw a 400 m buffer around every connector and save the result as `tokyo_stop_catchments.geoparquet` in GeoParquet, with one Polygon or MultiPolygon row per input connector? Please keep `connector_id` on every row with the original value preserved, since that's the join key.
0:00
System info
{
"adapter": "openrouter",
"model": "deepseek/deepseek-v4-flash",
"base_url": "https://openrouter.ai/api/v1"
}
0:01
Let me start by reading the input file to understand its structure.
0:01
Read
/work/tokyo_connectors.geojson
1 {
2 "type": "FeatureCollection",
3 "name": "tokyo_connectors",
4 "crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
5 "features": [
6 { "type": "Feature", "properties": { "connector_id": "0096dba5-f5b5-4cd6-b10b-de96fac11d0c" }, "geometry": { "type": "Point", "coordinates": [ 139.7666758, 35.6816829 ] } },
7 { "type": "Feature", "properties": { "connector_id": "00bfefa0-b287-48ac-acb4-9ee43e8ccc3e" }, "geometry": { "type": "Point", "coordinates": [ 139.767766599999987, 35.6817796 ] } },
8 { "type": "Feature", "properties": { "connector_id": "00c74771-e2be-486d-8962-a411c4bdc882" }, "geometry": { "type": "Point", "coordinates": [ 139.766474100000011, 35.6817342 ] } },
9 { "type": "Feature", "properties": { "connector_id": "012ea04f-85ec-417a-a7c4-c982b3de4436" }, "geometry": { "type": "Point", "coordinates": [ 139.766754, 35.6814118 ] } },
10 { "type": "Feature", "properties": { "connector_id": "0365ffb5-6290-4cc7-899c-946d30e997bd" }, "geometry": { "type": "Point", "coordinates": [ 139.767668500000013, 35.6812699 ] } },
11 { "type": "Feature", "properties": { "connector_id": "03aed995-97ff-4082-9ea4-461476e6fb59" }, "geometry": { "type": "Point", "coordinates": [ 139.766743, 35.6816612 ] } },
12 { "type": "Feature", "properties": { "connector_id": "03bf62b2-8ef2-478b-ad8d-ee2d34dcb355" }, "geometry": { "type": "Point", "coordinates": [ 139.7680073, 35.68172 ] } },
13 { "type": "Feature", "properties": { "connector_id": "041abf7f-8f32-431b-996d-36e9aaba89a7" }, "geometry": { "type": "Point", "coordinates": [ 139.7663958, 35.6814469 ] } },
14 { "type": "Feature", "properties": { "connector_id": "0523ae99-9fed-4137-8345-2f8a155ed2b6" }, "geometry": { "type": "Point", "coordinates": [ 139.7662568, 35.68123940000001 ] } },
15 { "type": "Feature", "properties": { "connector_id": "08b9b8e7-12fc-46b4-bd3a-7e94ee1d280b" }, "geometry": { "type": "Point", "coordinates": [ 139.7668761, 35.681728 ] } },
16 { "type": "Feature", "properties": { "connector_id": "08cdb272-cd07-4501-b5b7-f41cf8ae0b24" }, "geometry": { "type": "Point", "coordinates": [ 139.7672097, 35.6826518 ] } },
17 { "type": "Feature", "properties": { "connector_id": "0bfdf570-a7c6-44f8-9d7b-31203791523f" }, "geometry": { "type": "Point", "coordinates": [ 139.766253299999988, 35.6811865 ] } },
18 { "type": "Feature", "properties": { "connector_id": "0dc5371d-3b64-4a73-90d7-e848a695a1f5" }, "geometry": { "type": "Point", "coordinates": [ 139.767078199999986, 35.6815685 ] } },
19 { "type": "Feature", "properties": { "connector_id": "0eb0b1c6-28be-4dcd-aa29-9d2df97bdbaa" }, "geometry": { "type": "Point", "coordinates": [ 139.7665611, 35.6827282 ] } },
20 { "type": "Feature", "properties": { "connector_id": "0ff6361e-d6db-4218-b7d0-c0c3a6213b67" }, "geometry": { "type": "Point", "coordinates": [ 139.7662075, 35.6826326 ] } },
21 { "type": "Feature", "properties": { "connector_id": "1042b660-bd6c-44d8-aa57-5ae5b2c0b021" }, "geometry": { "type": "Point", "coordinates": [ 139.7685234, 35.6820894 ] } },
22 { "type": "Feature", "properties": { "connector_id": "107754ac-b30f-42d9-bd08-8bceaab5ef3d" }, "geometry": { "type": "Point", "coordinates": [ 139.7662904, 35.6815201 ] } },
23 { "type": "Feature", "properties": { "connector_id": "14bf8787-bcd0-484e-bbec-26671548b522" }, "geometry": { "type": "Point", "coordinates": [ 139.766840699999989, 35.681635 ] } },
24 { "type": "Feature", "properties": { "connector_id": "15aa80a7-d9d0-4b7b-9880-8b7730988919" }, "geometry": { "type": "Point", "coordinates": [ 139.7668243, 35.6821165 ] } },
25 { "type": "Feature", "properties": { "connector_id": "1755e3d3-cbe6-4505-a84a-2db671cf160d" }, "geometry": { "type": "Point", "coordinates": [ 139.7674389, 35.6814538 ] } },
26 { "type": "Feature", "properties": { "connector_id": "17bf825e-fbfb-4a35-801b-a7d2a8050c37" }, "geometry": { "type": "Point", "coordinates": [ 139.7686438, 35.6820768 ] } },
27 { "type": "Feature", "properties": { "connector_id": "17e28e53-c665-420b-b42d-4134b56a0cb0" }, "geometry": { "type": "Point", "coordinates": [ 139.767269, 35.6823914 ] } },
28 { "type": "Feature", "properties": { "connector_id": "1a0b85d5-879d-4853-9706-dbb7a8e3d0c5" }, "geometry": { "type": "Point", "coordinates": [ 139.7665403, 35.6814005 ] } },
29 { "type": "Feature", "properties": { "connector_id": "1a0e6944-6916-4dfa-87f5-a79da26cf3e7" }, "geometry": { "type": "Point", "coordinates": [ 139.7661871, 35.6823068 ] } },
30 { "type": "Feature", "properties": { "connector_id": "1bad9944-9b32-4dc9-92a9-da39f6444b99" }, "geometry": { "type": "Point", "coordinates": [ 139.7672446, 35.6822196 ] } },
31 { "type": "Feature", "properties": { "connector_id": "1bdef3a6-743f-4043-9418-7eb5862db3c3" }, "geometry": { "type": "Point", "coordinates": [ 139.767980099999988, 35.6817346 ] } },
32 { "type": "Feature", "properties": { "connector_id": "1c1b79be-15f4-4840-9ee9-66a0056c63a9" }, "geometry": { "type": "Point", "coordinates": [ 139.7669065, 35.68209550000001 ] } },
33 { "type": "Feature", "properties": { "connector_id": "1df978d7-2473-4eb7-a84f-6ba106ddb2ba" }, "geometry": { "type": "Point", "coordinates": [ 139.7664861, 35.6826852 ] } },
34 { "type": "Feature", "properties": { "connector_id": "1e4592ad-97a1-4b0e-a3a9-2a88786e245b" }, "geometry": { "type": "Point", "coordinates": [ 139.7661904, 35.6815162 ] } },
35 { "type": "Feature", "properties": { "connector_id": "1e47d210-5226-43a2-b8d3-7fa552046671" }, "geometry": { "type": "Point", "coordinates": [ 139.767438700000014, 35.682777 ] } },
36 { "type": "Feature", "properties": { "connector_id": "1e9a60f3-8d86-4a4a-a8f1-da5444d25409" }, "geometry": { "type": "Point", "coordinates": [ 139.7667501, 35.6819392 ] } },
37 { "type": "Feature", "properties": { "connector_id": "21d629e8-6d1a-4db7-9a2c-55a3a32d7119" }, "geometry": { "type": "Point", "coordinates": [ 139.766539599999987, 35.6817969 ] } },
38 { "type": "Feature", "properties": { "connector_id": "227c0b52-ebc1-4ce8-bf3c-555b540a055a" }, "geometry": { "type": "Point", "coordinates": [ 139.7670965, 35.6822246 ] } },
39 { "type": "Feature", "properties": { "connector_id": "22a27d4c-0ed4-4539-a333-f0e3fc58a98c" }, "geometry": { "type": "Point", "coordinates": [ 139.7674276, 35.6814886 ] } },
40 { "type": "Feature", "properties": { "connector_id": "22e84fd0-f1c1-4df9-baf5-cb09d96d566f" }, "geometry": { "type": "Point", "coordinates": [ 139.7671445, 35.6813867 ] } },
41 { "type": "Feature", "properties": { "connector_id": "239cc324-c0e4-4ea6-9965-03eef604c48b" }, "geometry": { "type": "Point", "coordinates": [ 139.7673543, 35.6815024 ] } },
42 { "type": "Feature", "properties": { "connector_id": "23c1c9f4-096b-4c37-bedb-ab9d6c78b2a1" }, "geometry": { "type": "Point", "coordinates": [ 139.7676047, 35.6810607 ] } },
43 { "type": "Feature", "properties": { "connector_id": "240eff61-3cd4-4ded-8c46-719e5a4540c0" }, "geometry": { "type": "Point", "coordinates": [ 139.768252, 35.6816658 ] } },
44 { "type": "Feature", "properties": { "connector_id": "245322de-48e8-4dfb-9d41-46bd8dc09cf3" }, "geometry": { "type": "Point", "coordinates": [ 139.7685602, 35.6821874 ] } },
45 { "type": "Feature", "properties": { "connector_id": "2487f82a-33b3-4832-b23c-bd5e11e21caa" }, "geometry": { "type": "Point", "coordinates": [ 139.76663640000001, 35.681672 ] } },
46 { "type": "Feature", "properties": { "connector_id": "268e303a-0b68-4c21-9f97-ffb31168c140" }, "geometry": { "type": "Point", "coordinates": [ 139.7664135, 35.6827351 ] } },
47 { "type": "Feature", "properties": { "connector_id": "2695c023-fe63-4b9d-9859-508c957c361b" }, "geometry": { "type": "Point", "coordinates": [ 139.766538700000012, 35.6827287 ] } },
48 { "type": "Feature", "properties": { "connector_id": "275d38d4-0e32-46d4-b598-4a1dae03a9af" }, "geometry": { "type": "Point", "coordinates": [ 139.7672059, 35.6813719 ] } },
49 { "type": "Feature", "properties": { "connector_id": "2924096b-4277-4761-a7f8-21dd647db870" }, "geometry": { "type": "Point", "coordinates": [ 139.7677969, 35.6817624 ] } },
50 { "type": "Feature", "properties": { "connector_id": "2a92e2bd-0d74-40a1-b9b8-6420103a5401" }, "geometry": { "type": "Point", "coordinates": [ 139.7682812, 35.6821648 ] } },
51 { "type": "Feature", "properties": { "connector_id": "2ad1c1e9-40e7-400f-802b-e975e133e2f6" }, "geometry": { "type": "Point", "coordinates": [ 139.768440500000025, 35.6821093 ] } },
52 { "type": "Feature", "properties": { "connector_id": "2b9f9f75-4915-4075-8196-6c5cb64f35ba" }, "geometry": { "type": "Point", "coordinates": [ 139.767838, 35.6811426 ] } },
53 { "type": "Feature", "properties": { "connector_id": "2cb224ff-0203-4773-a7f7-195750862c57" }, "geometry": { "type": "Point", "coordinates": [ 139.766250500000012, 35.6828376 ] } },
54 { "type": "Feature", "properties": { "connector_id": "2f4e78a2-24ab-4d18-800a-27373b12b120" }, "geometry": { "type": "Point", "coordinates": [ 139.7672489, 35.6815284 ] } },
55 { "type": "Feature", "properties": { "connector_id": "31babb9c-286d-4c4e-8975-cf6d4dedf8fb" }, "geometry": { "type": "Point", "coordinates": [ 139.7672945, 35.6819961 ] } },
56 { "type": "Feature", "properties": { "connector_id": "31c10fdb-c2ba-49be-b64d-e6e7158d2cb8" }, "geometry": { "type": "Point", "coordinates": [ 139.766834, 35.6816315 ] } },
57 { "type": "Feature", "properties": { "connector_id": "327ada68-9213-4391-a30a-edf3f7c7aad3" }, "geometry": { "type": "Point", "coordinates": [ 139.7677672, 35.681287 ] } },
58 { "type": "Feature", "properties": { "connector_id": "361a75fa-5209-4e67-84c8-6f388e34d996" }, "geometry": { "type": "Point", "coordinates": [ 139.7673892, 35.6819718 ] } },
59 { "type": "Feature", "properties": { "connector_id": "36b08cfd-1c1a-434c-aa5b-6bcc573b6ad2" }, "geometry": { "type": "Point", "coordinates": [ 139.768467, 35.6819441 ] } },
60 { "type": "Feature", "properties": { "connector_id": "371aa909-6a4e-4683-a71f-0e7f15b22390" }, "geometry": { "type": "Point", "coordinates": [ 139.7663957, 35.681755 ] } },
61 { "type": "Feature", "properties": { "connector_id": "378d8c3f-0c93-4446-98c4-33f324875554" }, "geometry": { "type": "Point", "coordinates": [ 139.76601, 35.6823609 ] } },
62 { "type": "Feature", "properties": { "connector_id": "38e49c44-8136-429e-90b7-91efe7c0a116" }, "geometry": { "type": "Point", "coordinates": [ 139.766768, 35.6819256 ] } },
63 { "type": "Feature", "properties": { "connector_id": "3c17525a-69fd-4e3f-b4c4-6c2d3b1673d6" }, "geometry": { "type": "Point", "coordinates": [ 139.7686053, 35.6811351 ] } },
64 { "type": "Feature", "properties": { "connector_id": "3c7beda1-ca76-4755-aeb8-521f4d28e71f" }, "geometry": { "type": "Point", "coordinates": [ 139.7665129, 35.6821951 ] } },
65 { "type": "Feature", "properties": { "connector_id": "3d049e65-2a57-4791-adde-cd58547274cd" }, "geometry": { "type": "Point", "coordinates": [ 139.7666241, 35.6816754 ] } },
66 { "type": "Feature", "properties": { "connector_id": "3d45f050-1a74-43a6-9465-0aa198ce3a6e" }, "geometry": { "type": "Point", "coordinates": [ 139.767237599999987, 35.6822179 ] } },
67 { "type": "Feature", "properties": { "connector_id": "3dbfe496-1adc-4d91-9fd8-d64ffbc7bad2" }, "geometry": { "type": "Point", "coordinates": [ 139.766692299999988, 35.6812423 ] } },
68 { "type": "Feature", "properties": { "connector_id": "3e29d72d-93c8-471e-8618-a332083b7b68" }, "geometry": { "type": "Point", "coordinates": [ 139.7662138, 35.6815384 ] } },
69 { "type": "Feature", "properties": { "connector_id": "3f2d6721-5e62-4ab2-98cb-bcbec0a83a55" }, "geometry": { "type": "Point", "coordinates": [ 139.76677810000001, 35.6822941 ] } },
70 { "type": "Feature", "properties": { "connector_id": "400b8dcd-719f-4251-a282-d12b7075c5d5" }, "geometry": { "type": "Point", "coordinates": [ 139.7667794, 35.6815573 ] } },
71 { "type": "Feature", "properties": { "connector_id": "41013234-4477-48b1-8c00-b025ba1dffcd" }, "geometry": { "type": "Point", "coordinates": [ 139.7669081, 35.6817272 ] } },
72 { "type": "Feature", "properties": { "connector_id": "41448b84-0b1f-439e-a635-d45f7454a9fc" }, "geometry": { "type": "Point", "coordinates": [ 139.7688517, 35.6826133 ] } },
73 { "type": "Feature", "properties": { "connector_id": "41ac9b44-dd8b-4679-bb17-6da1fd632577" }, "geometry": { "type": "Point", "coordinates": [ 139.766214100000013, 35.6825245 ] } },
74 { "type": "Feature", "properties": { "connector_id": "41ef29d7-e549-4908-897c-411c85bf05f0" }, "geometry": { "type": "Point", "coordinates": [ 139.766989099999989, 35.681474 ] } },
75 { "type": "Feature", "properties": { "connector_id": "42800e08-06b9-487b-a0ee-d0412773b729" }, "geometry": { "type": "Point", "coordinates": [ 139.7684931, 35.6816228 ] } },
76 { "type": "Feature", "properties": { "connector_id": "4340f349-fe31-49a9-b65c-18fd743eb4a2" }, "geometry": { "type": "Point", "coordinates": [ 139.766725400000013, 35.6819371 ] } },
77 { "type": "Feature", "properties": { "connector_id": "437cf070-3aa1-4813-ab19-062a536efc7e" }, "geometry": { "type": "Point", "coordinates": [ 139.7689753, 35.6827893 ] } },
78 { "type": "Feature", "properties": { "connector_id": "43b97cd6-eec7-4ef9-8dea-bf9dd7a7802a" }, "geometry": { "type": "Point", "coordinates": [ 139.766859899999986, 35.6816847 ] } },
79 { "type": "Feature", "properties": { "connector_id": "44961793-4b2a-4baa-8710-359b0f9ef352" }, "geometry": { "type": "Point", "coordinates": [ 139.7663402, 35.6816434 ] } },
80 { "type": "Feature", "properties": { "connector_id": "449a01f2-267d-45d8-bc67-18e545d53823" }, "geometry": { "type": "Point", "coordinates": [ 139.7670636, 35.6828044 ] } },
81 { "type": "Feature", "properties": { "connector_id": "46199b32-8dc0-497a-a4f5-5311779b2bd5" }, "geometry": { "type": "Point", "coordinates": [ 139.76899370000001, 35.6826854 ] } },
82 { "type": "Feature", "properties": { "connector_id": "484bcd93-17e2-4771-93df-c48318ccef51" }, "geometry": { "type": "Point", "coordinates": [ 139.766278699999987, 35.6826138 ] } },
83 { "type": "Feature", "properties": { "connector_id": "4b97a12a-170b-4352-a204-7bae87e1a4e4" }, "geometry": { "type": "Point", "coordinates": [ 139.7678042, 35.6813895 ] } },
84 { "type": "Feature", "properties": { "connector_id": "4ba0cf27-8b31-445c-9b13-f4a0ba5e5293" }, "geometry": { "type": "Point", "coordinates": [ 139.7672935, 35.6811303 ] } },
85 { "type": "Feature", "properties": { "connector_id": "4c04e03d-35d3-493c-ab37-bb1b3313ee41" }, "geometry": { "type": "Point", "coordinates": [ 139.768698, 35.6828476 ] } },
86 { "type": "Feature", "properties": { "connector_id": "4c37b6ed-b8ef-4a78-8560-b1175d765955" }, "geometry": { "type": "Point", "coordinates": [ 139.767181, 35.6814096 ] } },
87 { "type": "Feature", "properties": { "connector_id": "4d5d837a-b37e-4781-8b9d-d7bc0f5f079d" }, "geometry": { "type": "Point", "coordinates": [ 139.7665962, 35.6815493 ] } },
88 { "type": "Feature", "properties": { "connector_id": "4fa1e139-bebf-4d7a-b846-aed085d9dc4a" }, "geometry": { "type": "Point", "coordinates": [ 139.7688863, 35.682131 ] } },
89 { "type": "Feature", "properties": { "connector_id": "5024ad70-c13d-4196-9116-93603ea61d7e" }, "geometry": { "type": "Point", "coordinates": [ 139.7685909, 35.682583 ] } },
90 { "type": "Feature", "properties": { "connector_id": "505f8d81-aab9-4a6c-82c6-9cedd31fae32" }, "geometry": { "type": "Point", "coordinates": [ 139.7674946, 35.6814712 ] } },
91 { "type": "Feature", "properties": { "connector_id": "5064df8b-7dd0-4087-897e-fccc12fb7e32" }, "geometry": { "type": "Point", "coordinates": [ 139.767513400000013, 35.6810817 ] } },
92 { "type": "Feature", "properties": { "connector_id": "5114d75e-0d84-4054-9e38-e9cc860cc179" }, "geometry": { "type": "Point", "coordinates": [ 139.7676782, 35.6814271 ] } },
93 { "type": "Feature", "properties": { "connector_id": "51385180-4bdb-4874-b05a-53f7b44897d1" }, "geometry": { "type": "Point", "coordinates": [ 139.768518300000011, 35.6829964 ] } },
94 { "type": "Feature", "properties": { "connector_id": "5154958c-f59e-4377-8d2f-cda90b665b41" }, "geometry": { "type": "Point", "coordinates": [ 139.7670041, 35.6820705 ] } },
95 { "type": "Feature", "properties": { "connector_id": "51d5c5f7-3240-458f-9996-30352bb5503e" }, "geometry": { "type": "Point", "coordinates": [ 139.7667553, 35.6822929 ] } },
96 { "type": "Feature", "properties": { "connector_id": "528d4201-9e78-4553-815d-462212d6d458" }, "geometry": { "type": "Point", "coordinates": [ 139.7663394, 35.6814608 ] } },
97 { "type": "Feature", "properties": { "connector_id": "541e44e1-877d-42b5-9025-b7f9327dc0f6" }, "geometry": { "type": "Point", "coordinates": [ 139.767425300000014, 35.6821899 ] } },
98 { "type": "Feature", "properties": { "connector_id": "55ae8cb1-7b0a-4919-a89c-ff16daed1f0e" }, "geometry": { "type": "Point", "coordinates": [ 139.7662464, 35.6828942 ] } },
99 { "type": "Feature", "properties": { "connector_id": "55c72f96-3a35-402e-a4d9-20e1499e859c" }, "geometry": { "type": "Point", "coordinates": [ 139.7666443, 35.6820861 ] } },
100 { "type": "Feature", "properties": { "connector_id": "5627c3dd-e5f8-4042-bd88-e459776b6793" }, "geometry": { "type": "Point", "coordinates": [ 139.76628070000001, 35.6812207 ] } },
<system-reminder>Showed lines 1-100 of 307. Re-call Read with offset=101 to continue, or raise limit.</system-reminder>
0:09
Now I understand the data. It's a GeoJSON with Point geometries in WGS84 (CRS84 / EPSG:4326). I need to: 1. Read the GeoJSON using geopandas 2. Project to a local projected CRS suitable for Tokyo (to do accurate 400 m buffers in meters) 3. Buffer each point by 400 m 4. Convert back to WGS84 (or keep in projected CRS? Let me think - the GeoParquet can store any CRS, but typically WGS84 is standard. Let me keep the geometry in the same CRS as the input for consistency, so WGS84.) 5. Save to GeoParquet with connector_id preserved For Tokyo, a good projected CRS would be JGD2011 / Japan Plane Rectangular CS IX (EPSG:6675) which covers Tokyo area, or UTM zone 54N (EPSG:32654). Let me use UTM zone 54N which covers Tokyo. Actually, let me use EPSG:6675 (JGD2011 / Japan Plane Rectangular CS IX) which is specifically for Tokyo. Or EPSG:32654 (WGS 84 / UTM zone 54N). Let me use 32654 since the input is WGS84. Let me write a Python script to do this.
0:09
0:09
Write
/work/solve.py
content · 34 lines · py
import geopandas as gpd
from shapely.geometry import Point
import warnings
warnings.filterwarnings("ignore")
# 1. Read the GeoJSON
gdf = gpd.read_file("/work/tokyo_connectors.geojson")
print(f"Read {len(gdf)} connector points")
print(f"Input CRS: {gdf.crs}")
print(f"Columns: {list(gdf.columns)}")
# 2. Project to a meters-based CRS for Tokyo area
# UTM zone 54N (covers Tokyo) — EPSG:32654
gdf_proj = gdf.to_crs("EPSG:32654")
# 3. Buffer by 400 metres
gdf_proj["geometry"] = gdf_proj.geometry.buffer(400)
# 4. Convert back to WGS84 (original CRS) for output
gdf_out = gdf_proj.to_crs("EPSG:4326")
print(f"Output CRS: {gdf_out.crs}")
print(f"Output geom types: {gdf_out.geometry.geom_type.value_counts().to_dict()}")
# 5. Save as GeoParquet
gdf_out.to_parquet("/work/tokyo_stop_catchments.geoparquet", index=False)
print("Saved /work/tokyo_stop_catchments.geoparquet")
print(f"Rows: {len(gdf_out)}")
print(f"Columns: {list(gdf_out.columns)}")
# Quick sanity check — first few rows
print(gdf_out[["connector_id"]].head())
Wrote /work/solve.py (1029 chars).
0:12
Let me run the script.
0:12
Bash
cd /work && python solve.py
Read 300 connector points
Input CRS: EPSG:4326
Columns: ['connector_id', 'geometry']
Output CRS: EPSG:4326
Output geom types: {'Polygon': 300}
Saved /work/tokyo_stop_catchments.geoparquet
Rows: 300
Columns: ['connector_id', 'geometry']
connector_id
0 0096dba5-f5b5-4cd6-b10b-de96fac11d0c
1 00bfefa0-b287-48ac-acb4-9ee43e8ccc3e
2 00c74771-e2be-486d-8962-a411c4bdc882
3 012ea04f-85ec-417a-a7c4-c982b3de4436
4 0365ffb5-6290-4cc7-899c-946d30e997bd
0:16
The script ran successfully. Let me verify the output file exists and has the expected content.
0:16
0:16
Bash
cd /work && python -c "
cd /work && python -c "
import geopandas as gpd
gdf = gpd.read_parquet('tokyo_stop_catchments.geoparquet')
print(f'Rows: {len(gdf)}')
print(f'Columns: {list(gdf.columns)}')
print(f'CRS: {gdf.crs}')
print(f'Geometry types: {gdf.geom_type.value_counts().to_dict()}')
print(f'connector_id dtype: {gdf[\"connector_id\"].dtype}')
print()
print(gdf.head())
"
Rows: 300
Columns: ['connector_id', 'geometry']
CRS: {"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeographicCRS", "name": "WGS 84", "datum_ensemble": {"name": "World Geodetic System 1984 ensemble", "members": [{"name": "World Geodetic System 1984 (Transit)"}, {"name": "World Geodetic System 1984 (G730)"}, {"name": "World Geodetic System 1984 (G873)"}, {"name": "World Geodetic System 1984 (G1150)"}, {"name": "World Geodetic System 1984 (G1674)"}, {"name": "World Geodetic System 1984 (G1762)"}, {"name": "World Geodetic System 1984 (G2139)"}, {"name": "World Geodetic System 1984 (G2296)"}], "ellipsoid": {"name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563}, "accuracy": "2.0", "id": {"authority": "EPSG", "code": 6326}}, "coordinate_system": {"subtype": "ellipsoidal", "axis": [{"name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree"}, {"name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree"}]}, "scope": "Horizontal component of 3D system.", "area": "World.", "bbox": {"south_latitude": -90, "west_longitude": -180, "north_latitude": 90, "east_longitude": 180}, "id": {"authority": "EPSG", "code": 4326}}
Geometry types: {'Polygon': 300}
connector_id dtype: str
connector_id geometry
0 0096dba5-f5b5-4cd6-b10b-de96fac11d0c POLYGON ((139.7711 35.68173, 139.77108 35.6813...
1 00bfefa0-b287-48ac-acb4-9ee43e8ccc3e POLYGON ((139.77219 35.68182, 139.77217 35.681...
2 00c74771-e2be-486d-8962-a411c4bdc882 POLYGON ((139.77089 35.68178, 139.77088 35.681...
3 012ea04f-85ec-417a-a7c4-c982b3de4436 POLYGON ((139.77117 35.68146, 139.77116 35.681...
4 0365ffb5-6290-4cc7-899c-946d30e997bd POLYGON ((139.77209 35.68132, 139.77207 35.680...
0:22
The output is correct: - 300 rows (one per connector, matching the input) - `connector_id` preserved as string (original values) - Each geometry is a Polygon (or could be MultiPolygon if overlapping buffers, but since each point is buffered independently they're all clean Polygons) - CRS is EPSG:4326 (WGS84) - Saved as GeoParquet at `/work/tokyo_stop_catchments.geoparquet` This is exactly what was requested.
0:22