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How to calculate area for each feature in a Spatially Enabled Dataframe?

Josh-R

How does one calculate area for each feature in a Spatially Enabled Dataframe? I read it in from a shapefile and need the acreage of each feature. I also would like to store the area as a new column. This should be simple but I can't find a straight forward answer that works, I've referenced the two similar posts. Thank you!

sedf = pd.DataFrame.spatial.from_featureclass(myShapeFile)

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Accepted answers

jcarlson

You want to get a GeoSeriesAccessor and use its area property, maybe pipe that into a new field.

sedf = pd.DataFrame.spatial.from_featureclass(myShapeFile)

gsa = arcgis.features.GeoSeriesAccessor(sedf['SHAPE'])

# add column using insert
sedf.insert(0, 'the_area', gsa.area, True)

# alternatively, just add a new column at the end of the sedf
sedf['the_area'] = gsa.area

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davidanderson_nifc

I found this answer helpful.

Solved: Re: return geodesic area from spatial dataframe ar... - Esri Community

Josh-R

Exactly what I was looking for! Thank you!

jcarlson

You want to get a GeoSeriesAccessor and use its area property, maybe pipe that into a new field.

sedf = pd.DataFrame.spatial.from_featureclass(myShapeFile)

gsa = arcgis.features.GeoSeriesAccessor(sedf['SHAPE'])

# add column using insert
sedf.insert(0, 'the_area', gsa.area, True)

# alternatively, just add a new column at the end of the sedf
sedf['the_area'] = gsa.area

Josh-R

Please excuse the simplified example. I'm doing a bunch geoprocessing beforehand that I'm not showing, so I would like an updated calculation. I can do it in arcpy no problem but I am curious if the arcgis api has a way to do it.

danretired

you could just calculate in the shapefile first

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