Total Station Nodes Sequence in Project Explorer
The sequence of nodes (top to bottom) nested beneath the imported data file node in the Project Explorer reflects the chronological order in which data was gathered. For example, the station setup node is above observations nodes because this is the sequence of events in the field.
Mean angle nodes are beneath rounds and backbearing nodes because observations must occur before calculations.
Even a backbearing node follows this rule, although it may appear not to. Consider a station setup plus in which observations to the backsight points are made to establish the orientation. It may seem as though the observations are collected first and then a backbearing is determined from them. But, what actually happens is very much like a surveyor setting the horizontal plate of a theodolite before making observations. This fixes or establishes the horizontal circle reading until the next time he changes it. Each plate change coincides with a backbearing node.
Performing a new setup is also like changing the plate because the instrument may not be put back exactly the same as a previous setup. Survey Controller will reset the horizontal circle reading to a user value under certain circumstances. This, of course, means a new backbearing node.
In a single backsight setup, this occurs whenever a face 1 observation to the backsight is made. In other setup types, different rules apply.
