Pinch to zoom, drag to move, tap a point to edit it. Blue dot = you.
| Pt | Type | Y | X | Z |
|---|
Settings
.xyz and DXF
Lo coordinates have Y increasing to the west and X to the south, so Archicad shows them mirrored unless you use "X=East, Y=North". Archicad also works better near 0,0; the base point subtracted is recorded in the Excel file. The DXF always uses X=East, Y=North (with the same base point option), one layer per point type, coordinates in metres.
"PDF + map" adds a light-toned OpenStreetMap street map under the plan; "PDF + aerial" adds a lightened Esri aerial photo. Both need internet when you export; alignment depends on GPS accuracy and the photo's own accuracy.
Calibrate on a known point
Stand on a beacon or benchmark holding the phone as you will when surveying, enter its known values and tap Calibrate. Leave the horizontal values blank to calibrate height only.
No calibration applied.
Phone GPS alone is roughly 2–5 m horizontally and worse vertically. Use averaging, calibrate on a known point, or connect an RTK receiver for centimetre results.