Latest Contributions by AdrianWelsh

Hi David, To be perfectly honest, in my professional opinion I would say that maybe 10% of all GIS users truly understand coordinate systems. Maybe 60% of users say they understand them and the remaining 30% struggle with them. I may be offending people when I say that but that is what I have seen over the last 15+ years of dealing with this stuff (especially when you work with land surveyors - you get completely new perspectives on coordinate systems). To not get too deep into this, all projected coordinate systems will also have a geographic coordinate system as its base. This is normal. What you're seeing is normal and likely a very commonly used StatePlane coordinate system for your part of North Carolina, so I would stick with that as long as your data falls completely within that 'boundary'. If your client is one of the local, state, or local-federal governments, I would look into their data and see what systems they use so that you can use the same system when serving them. For your question about changing coordinate systems is very simple. Luckily ArcGIS Pro (and ArcMap) will perform what's call on-the-fly projection, meaning that if your projected data comes into your map in a different projection than what the map is set it, ArcGIS will on-the-fly change it so that it fits. To make it a permanent change, and change the data into the coordinate system that your client wants, this is also very easy and done in a few ways. One is to use the geoprocessing command of Project. That's kind of the easy one-stop-shop. Another way is to export the data into a new file and choose a new coordinate system when doing the export. There are likely other ways too but these are likely the most common. Let me know if you have more questions. ... View more

Ok, this makes more sense. Those duplicates are rows (records), not columns. I do not know of a way to eliminate duplicate records in ArcGIS Online automatically. You cannot delete records from an ArcGIS Online table. There are a couple of ways to eliminate your duplicates, one at a time. One is to do it on the map. You need to have editing enabled (from the settings), then on the map, start he editing and click on the feature to delete and select delete.  Another way, that I haven't tried is through the service URL, according to this post: https://gis.stackexchange.com/a/403100   ... View more