I have a solar site layout (assume rectangle with 4 corners) with one known corner in GPS lat/long. I scaled the layout and superimposed this on geolocated map with manually located axis set to the corner lat/long. Would like to find GPS coordinates at the other corners of the layout by touching corner and getting GPS lat/long.
Another similar application is using Barry Miliken’s 2DXY starting from the manually located axis and determining the GPS coordinates at corners.