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Transform GeoPandas objects to metric projections (like World Equidistant Cylindrical) to calculate distances in meters or kilometers rather than degrees.
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npx skills add https://github.com/cxcscmu/SkillLearnBench --skill geospatial-metric-projections命令会保持在同一行。复制前请横向滚动并检查完整内容。
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基于 SOC 职业分类
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| name | geospatial-metric-projections |
| description | Transform GeoPandas objects to metric projections (like World Equidistant Cylindrical) to calculate distances in meters or kilometers rather than degrees. |
Calculations in geographic coordinates (EPSG:4326) return results in degrees, which are not suitable for distance measurements. To calculate distances in kilometers:
.distance() method will return values in meters (usually the base unit for these projections).# Project to World Equidistant Cylindrical
metric_crs = "ESRI:54002"
points_metric = points.to_crs(metric_crs)
boundary_metric = boundary_gdf.to_crs(metric_crs)
# Distance calculation (returns meters)
distances = points_metric.distance(boundary_metric.union_all())
points['distance_km'] = distances / 1000