topic (re)project geometry after spatial.from_feather() in Python Questions

(re)project geometry after spatial.from_feather()

Mer-lin — Mon, 30 Dec 2024 12:17:43 GMT

hi,

after reading a feather file as described here

# Create SeDf by reading from feather sdf_f = pd.DataFrame.spatial.from_feather( './sedf_data/cities/sample_cms_data.feather')

we get a pandas DF.

calling

print(sdf_t.spatial.sr)

gives: {'wkid': None}

How could one (re)project the sdf?

Re: (re)project geometry after spatial.from_feather()

Marshal — Fri, 24 Jan 2025 14:19:18 GMT

You can directly set the sr property of the spatial dataframe.

from arcgis import GeoAccessor from arcgis.geometry import SpatialReference # Create dataframe by reading from feather df = GeoAccessor.from_feather( './sedf_data/cities/sample_cms_data.feather') # Create spatially enabled dataframe (NAD27, EPSG 4267) sdf_f = GeoAccessor.from_df(df, sr=4267, geometry_column='SHAPE') # Directly set the spatial reference (WGS84, EPSG 4326) with no conversion sdf_f.spatial.sr = SpatialReference(4326) # Verify the spatial reference print(sdf_f.spatial.sr)

Note, this is different projecting the dataframe from one spatial reference system to another. In that case, you would use the .project() method to ensure proper conversion.

https://developers.arcgis.com/python/latest/api-reference/arcgis.features.toc.html#arcgis.features.GeoAccessor.project

# Inplace projection to NAD27 sdf_f.spatial.project(4267)

Re: (re)project geometry after spatial.from_feather()

Mer-lin — Thu, 07 Aug 2025 08:17:08 GMT

Perfecto. Sry for the late reply!