@lurker Yep. Here's what ChatGPT says about that: Does the term "true north" refer to geographic north or astronomical north? ...

@mightymoe I'd double-like this and many others if I could. Too many to mention; I'd leave somebody out, but everybody who replied or commented on m...

@mightymoe Moe, with all due respect, please do not ever try to mentor someone. I love you and I respect you more than you'll ever know, but don't m...

Well yes. If I set up a base on ol' EZ4026, then I want the rover to believe that the coordinates of that point are the NAD83(2007) coordinates, so I ...

What system is LSS transforming your coordinates into?

@oldpacer It's not easy, is it? That's why I admire you guys, what you know, and the work that you do. Thanks for the help.

@rover83 OK, so you define the coordinates of a specific point in your preferred datum and the software calculates coordinates relative to that spec...

@oldpacer, @bill93 OK, so let's replace the nail in pavement with NGS mark EZ4026. If I set the GNSS over that mark, I want it to give me the supers...

@mightymoe OK, help me better understand. If I drive a nail in pavement and set GNSS over it, it's going to record a Lat/Lon position. From that Lat...

@norm That's been my experience with GIS. When 2022 parameters for NC were published, I took the WKT string from an Iowa LDP and substituted the NC ...

@mightymoe So, you tell the DC that you want, say, an NAD83(2007) autonomous position and it gives you that? Pretty cool and makes perfect sense. ...

@rover83 Yes, if you punch in 2011 coordinates at the base, that point's location is defined in 2011 datum. If you punch in 1983 coordinates, that p...

Actually, here is the clarifying question and the ChatGPT answer: Satellites don't know anything about NAD83. What positioning basis do they...

@bill93 I could ask a clarifying question, but I think that ChatGPT means the ITRF or whatever that the satellites broadcast. The GNSS has the NAD s...

My new software toy is ChatGPT and it has given me amazingly accurate and concise answers to tricky questions involving ellipsoidal curvature and such...

ChapGPT says: Should the azimuth of a radio tower be measured as astronomic or geographic direction? The azimuth of a radio tower is typic...

Brunswick County beaches, East to West: Oak Island, Holden Beach, Ocean Isle (home of The GPS Store), and Sunset Beach. You can't go wrong with any of...

@mightymoe We've gone to Holden Beach since about 1982 or so. No night life, just houses and families. My kids are in their 50s, and that's where th...