Hi, I have 18 control points in both a local grid and AGD66 zone 55. We know the local grid is also in the same datum (AGD66). I'm wondering how I can create a prj file for the local grid from the control points.
I followed a Creating a Local Mine Projection on esri forum but the result is not good enough, the largest 'error' is about 23 meters between a control point in local grid and the one in AGD66 zone 55. Not sure if something I did wrong or maybe the central_meridian and latitudeof origin I entered is in AGD66 rather than GDA94? Any advise would be appreciated.
regards,
Jack
I followed a Creating a Local Mine Projection on esri forum but the result is not good enough, the largest 'error' is about 23 meters between a control point in local grid and the one in AGD66 zone 55. Not sure if something I did wrong or maybe the central_meridian and latitudeof origin I entered is in AGD66 rather than GDA94? Any advise would be appreciated.
regards,
Jack