> what do you mean a latitude and longitude doesn’t mean anything without a bunch more info?!
Is the more info just the coordinate system like WGS84, or am I missing something else?
Is the more info just the coordinate system like WGS84, or am I missing something else?
The worst part is that if you don’t get it exactly right, you’ll still get answers that look right but are shifted by maybe 1-3m. As an example, we had a field team out with a Trimble survey stick with RTK (nominal accuracy 1-2cm) that they were using to cross-check data from our aerial survey platform. We had laid out a bunch of targets on the ground, which they surveyed the corners for. Most of the time there was a fantastic match between the aerial survey data and the ground truth data, but occasionally there was a pretty large offset. As I discovered WAY too late, exactly one of the cellphones that ran the Trimble app had its coordinate system set to one of the Canadian CSRS frames instead of WGS84: https://natural-resources.canada.ca/science-data/science-res...
Edit: naturally, they just handed me the coordinates in a CSV file that they’d captured. The Trimble app + whatever data collection app didn’t actually record the reference frame.