geo-l2-bangkok-landuse-intersect
Map (reference ← swipe → agent)
0:00
Working on a flood-mitigation green-cover briefing. `landcover` has land-cover polygons for the Bangkok metro; `study_area` defines the BMA boundary. I need the land-cover within the study area, simplified enough that the file is small for the policy lead to preview in a browser, with the original `class` string and a per-feature `area_m2` in square metres.
Write the result to `bma_landcover_intersect.geojson` as a GeoJSON FeatureCollection with every feature stored as a MultiPolygon.
0:00
System info
{
"adapter": "openrouter",
"model": "google/gemma-4-26b-a4b-it",
"base_url": "https://openrouter.ai/api/v1"
}
0:01
Bash
ls -F
ls -F
bangkok_landcover.parquet bma_study_area.geojson
0:05
Write
/work/check_data.py
content · 13 lines · py
import geopandas as gpd
# Load the data
landcover = gpd.read_parquet('bangkok_landcover.parquet')
study_area = gpd.read_file('bma_study_area.geojson')
print("Landcover head:")
print(landcover.head())
print("\nStudy area head:")
print(study_area.head())
print("\nLandcover CRS:", landcover.crs)
print("Study area CRS:", study_area.crs)
Wrote /work/check_data.py (337 chars).
0:07
Bash
python /work/check_data.py
python /work/check_data.py
Landcover head:
id ... geometry
0 00023927-8760-5550-a47d-48ae7f087574 ... POLYGON ((647454.402 1506832.283, 647738.841 1...
1 0002ad8a-093a-539c-8f6c-0fb0b4f2c3c1 ... POLYGON ((643806.222 1536031.975, 643880.924 1...
2 001206dc-28bb-593e-87bd-72efd2f32c65 ... POLYGON ((695139.782 1532663.1, 695231.345 153...
3 001748f2-f294-53b7-be74-29acd35b3af6 ... POLYGON ((650585.19 1544580.727, 650660.692 15...
4 001ca192-b61e-56b8-a9b1-8f6d429f6fc0 ... POLYGON ((652703.522 1505402.689, 652740.294 1...
[5 rows x 3 columns]
Study area head:
name geometry
0 BMA study area POLYGON ((653609.601 1506149.152, 662313.016 1...
Landcover CRS: {"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ProjectedCRS", "name": "WGS 84 / UTM zone 47N", "base_crs": {"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"}]}, "id": {"authority": "EPSG", "code": 4326}}, "conversion": {"name": "UTM zone 47N", "method": {"name": "Transverse Mercator", "id": {"authority": "EPSG", "code": 9807}}, "parameters": [{"name": "Latitude of natural origin", "value": 0, "unit": "degree", "id": {"authority": "EPSG", "code": 8801}}, {"name": "Longitude of natural origin", "value": 99, "unit": "degree", "id": {"authority": "EPSG", "code": 8802}}, {"name": "Scale factor at natural origin", "value": 0.9996, "unit": "unity", "id": {"authority": "EPSG", "code": 8805}}, {"name": "False easting", "value": 500000, "unit": "metre", "id": {"authority": "EPSG", "code": 8806}}, {"name": "False northing", "value": 0, "unit": "metre", "id": {"authority": "EPSG", "code": 8807}}]}, "coordinate_system": {"subtype": "Cartesian", "axis": [{"name": "Easting", "abbreviation": "E", "direction": "east", "unit": "metre"}, {"name": "Northing", "abbreviation": "N", "direction": "north", "unit": "metre"}]}, "scope": "Navigation and medium accuracy spatial referencing.", "area": "Between 96\u00b0E and 102\u00b0E, northern hemisphere between equator and 84\u00b0N, onshore and offshore. China. Indonesia. Laos. Malaysia - West Malaysia. Mongolia. Myanmar (Burma). Russian Federation. Thailand.", "bbox": {"south_latitude": 0, "west_longitude": 96, "north_latitude": 84, "east_longitude": 102}, "id": {"authority": "EPSG", "code": 32647}}
Study area CRS: EPSG:32647
0:13
Write
Invalid JSON arguments: Unterminated string starting at: line 1 column 13 (char 12)