The green points are a download of a shp file from NGS for a few not-so-carefully selected marks near the project. I had never even thought about down...

@holy-cow I have some experience with such. One day my AP Calculus kids, the 11th graders anyway, came in wearing Puritan costumes. Turns out they we...

Perhaps a numeric example will help. Consider the three NGS points AH3962, AH3964, and AH4018. These points are located in the North Carolina foothill...

@geeoddmike In support of your argument, consider this somewhat counter-intuitive result from experimenting with NCAT. Choose any lat/lon positioin....

@jitterboogie Good enough. For me, I'm focused on coordinate systems, so the takeaway is that coordinates are assigned to plats at some point. Howeve...

@jitterboogie So, if I'm going to create a GIS for 30 lots in my neighborhood, will I look at 30 deeds, or will I import the aerial photo and assign ...

@jitterboogie So, how does GIS get those lines for property boundaries? I see coordinates in the script and the different geometries, but where do th...

@mightymoe LOL! Even an Easterner should have figured that out. I jumped to the conclusion that it was some dot suffix that I didn't know. ?ÿ

@jitterboogie Math is easy, words are hard. Oscar Adam's dream of having coordinates to identify every important point on the ground is still just a ...

@mightymoe That's what I thought. That seemed to me to be the way that Esri and Autodesk together could be of help, but I think that alliance is head...

@mightymoe No, not soon, but food for thought for GIS developers. Research every piece of real estate back to its legal beginning and codify it. Well...

@mightymoe If you could have three features in a local GIS, what would they be?