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Handling the antimeridian (180/-180 longitude) in geospatial analysis with GeoPandas and Shapely.
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Handles reading, populating, and saving .docx files using the python-docx library. Use this skill for any tasks involving template filling or modifying Word documents.
Perform various data analysis on SEC 13-F and obtain some insights of fund activities such as number of holdings, AUM, and change of holdings between two quarters.
This skill includes search capability in 13F, such as fuzzy search a fund information using possibly inaccurate name, or fuzzy search a stock cusip info using its name.
基于 SOC 职业分类
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| name | run2_antimeridian-handling |
| description | Handling the antimeridian (180/-180 longitude) in geospatial analysis with GeoPandas and Shapely. |
The Pacific plate spans the antimeridian (International Date Line at 180/-180 degrees longitude). Standard operations in EPSG:4326 may split geometries incorrectly.
(-180, -66, 180, 60), meaning it wraps correctly.gpd.sjoin(predicate="within") works correctly with these polygons for point-in-polygon tests.When computing distances, project to a CRS centered in the Pacific:
# Center at 160°W (middle of Pacific Ocean)
crs = "+proj=aeqd +lat_0=0 +lon_0=-160 +datum=WGS84 +units=m"
This avoids antimeridian splitting because the projection center is far from the antimeridian.
# Shift all longitudes to [0, 360] range
def shift_lon(geom):
from shapely.affinity import translate
# This is complex for polygons; projection is simpler
pass
Projection is generally the better approach.