I've got a project where I'm reading in geometry objects from text files to put them in ArcSDE. These geometry objects have an associated EPSG code, and I'm looking for a way to ensure they're in the right projection when I've finished with them.
Having taken a look at the factory codes that I'm interested in, (GCS GDA94; EPSG:4283, and VicGrid 94; EPSG:3111) for a project I'm working on it appears that the EPSG codes correspond directly to the ESRI factory codes for the spatial reference (here and here). This is great, as it means I don't have to worry about navigating to projection files to create SpatialReference objects, for example in the code below:
import arcpy # Create a spatial reference object using a factory code # sr = arcpy.SpatialReference() sr.factoryCode = int(epsg_code.lstrip("EPSG:")) sr.create()
Unfortunately I can't find any reference in the ESRI documentation to say whether this holds true all the time or not - I'm guess it does, but I'd rather know for sure. Does anyone know where I'd be able to find out?