geo-l2-nyc-park-symdiff
Map (reference ← swipe → agent)
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We're reconciling our official Parks polygons against an OSM-derived parks export. Both feed the public 'find a park' map and they disagree in dozens of places. `nyc_parks.gpkg` is a GeoPackage with official and OSM-derived park layers. I need every patch claimed by exactly one side, with adjacent disagreement patches merged together so that a shifted park's gain and loss form a single feature rather than two. One MultiPolygon per merged group with a `source` attribute whose value is exactly one of `parks_official`, `parks_osm`, or `both` (those exact strings, matching the input GPKG layer names). For each group I also need a label-anchor point that falls strictly inside the group's geometry.
Please write two GeoJSON FeatureCollections. First, `parks_disagreement.geojson` with the `source` column. Second, `park_label_anchors.geojson` with the same `source` column, with exactly one anchor per disagreement group in matching order.
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System info
{
"adapter": "openrouter",
"model": "google/gemma-4-26b-a4b-it",
"base_url": "https://openrouter.ai/api/v1"
}
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Bash
ls -l
ls -l
total 1604 -rw-r--r-- 1 agent agent 1642496 Jun 19 03:09 nyc_parks.gpkg
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Write
/work/inspect_gpkg.py
content · 13 lines · py
import geopandas as gpd
gpkg_path = 'nyc_parks.gpkg'
layers = gpd.read_file(gpkg_path, layer=None)
print(f"Layers in {gpkg_path}: {layers}")
# Let's inspect the first few rows of each layer to understand the structure
for layer in layers:
gdf = gpd.read_file(gpkg_path, layer=layer)
print(f"\nLayer: {layer}")
print(gdf.head())
print(gdf.crs)
Wrote /work/inspect_gpkg.py (361 chars).
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thought<tool_call|>
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You are not done yet. The expected output file is missing. Please re-read the original instructions and finish the task.
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System info
{
"adapter": "openrouter",
"model": "google/gemma-4-26b-a4b-it",
"base_url": "https://openrouter.ai/api/v1"
}
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