arcgis.geometry.project Not Returning Correct Coordinates
I'm trying to use the API for Python to project coordinate pairs from Iowa NAD83 State Plane North 2011 (wkid: 6463) to Web Mercator Auxiliary Sphere (wkid: 3857) and keep getting incorrect output coordinates even when providing a transformation using arcgis.geometry.project.
A sample input coordinate pair:
x: 5473781.44689313
y: 3528213.97180123
The output coordinate pair should be the following. I know this is correct because if I project the source dataset and overlay the two, they are right on top of each other, as expected.
x: -10181495.7632
y: 5185060.8775
However, if I use the Python API (code below), I get the following coordinate pair:
x: -10181494.235273974
y: 5185058.5577987395
The Python API is returning a point that is about 3 meters offset from where it should be. Is this a bug? Am I not inputting the correct values into the code below?
# set geometry
geometry_in = arcgis.geometry.Point({'x': 5473781.44689313, 'y': 3528213.97180123, 'spatialReference': {'wkid': 6463}})
# project geometry
geometry_projected = arcgis.geometry.project(geometries=[geometries_in], in_sr=6463, out_sr=3857, transformation=108363)
# get projected geometry
geometry = geometry_projected[0]
# get coordinate values
coord_x = geometry['x']
coord_y = geometry['y']
# show values
print(geometry)
print(coord_x)
print(coord_y)
{'x': -10181494.235273974, 'y': 5185058.5577987395, 'spatialReference': {'wkid': 102100, 'latestWkid': 3857}}
-10181494.235273974
5185058.5577987395
I am getting the transformation WKID from Pro, shown below.
