Having followed manual instructions I am experiencing problems joining data to a map. What I have is a UK Districts shapefile and imported data with my coordinate data in it.
This coordinate data I produced in excel by assigning centroids to each district. On advice I imported my excel file as a Personal geodatabase(.mdb) instead because apparently(ArcGis Join Data CSV Problem) ARCGIS treats this better but I still cannot fully merge layers.
The coordinates to 'map' onto my map correctly - see image - but the two layers are not joined. I have the error that I need to define a projection. I try to do this through the ARC Toolbox but it still says unknown coordinate system in properties. I then add Join/Relate from the properties window but get another error message.
What Can I do to diagnose the problem here? I've been stuck for so long!