GeoPandas .set_geometry() does not update Geometry of GeoDataFrame

Question

I'm trying to implement a transformation of x and y coordinates for line features of a Shapefile. geopandas.set_geometry() isn't setting the x and y coordinates and isn't giving me any errors.

Here is my code:

import shapely
import geopandas as gpd

def calcNewXY(geom):
    return geom.geometry.map(
        lambda line: shapely.ops.transform(lambda x, y: (x - 100000, y - 10000), line)
    )

data = gpd.read_file(inFile)
data.set_geometry(calcNewXY(data))

The actual coordinate transformation works, I debugged this part. Maybe somebody can shed some light on what I'm missing here.

SOLUTION:

inplace=True has to be set as suggested by @mikewatt

data.set_geometry(calcNewXY(data), inplace=True)

Answer 1

Another possible solution is to overwrite the data i.e.

data = data.set_geometry(calcNewXY(data))

See GeoPandas documentation for more details.