Tie In and Keep Surveying

A Survex or Therion survey arrives in its own frame, often turned at an unknown angle. A teammate's bundle arrives uncalibrated, because their calibration belongs to their project. Tie In puts it on your map.

In the Cave Lines list, tap the imported line's anchor menu (it reads Auto until anchored) and choose Tie In to Survey. Pick two points that exist in both surveys: the First pair sets position, the Second pair sets direction (pick it as far from the first as you can). For each pair, choose the Imported station and the Existing one, then tap Apply. It only shows once the project has a calibrated line (1.4 Calibration).

Tie In moves and turns the survey but never stretches it. If the two baselines differ in length, it tells you by how much. A big misfit usually means a pair isn't really the same point, or the file's units are wrong.

Tap New Cave Line and pick an imported station under Start at (Cave Line). To line it up with a survey you walked, use Tie In to Survey from the anchor menu once the project has a calibrated line.

Imported stations with no position wait as Unassigned. Stand at the real station and place it (3.3.5 Managing Stations).