In addition to traverses, complex observation networks can also be adjusted Access to this command is through the Surveying > Networks option, or by clicking the Networks button in the Station Calculation window.
The functionality of this option is very similar to that described above for traverses. The difference lies in the fact that networks consist of a list of inter-station observations to be used in calculations, in addition the station observations themselves. It is therefore possible to adjust either a complete survey or just a sub-section of a survey. Furthermore, the list of stations has no pre-determined order, since a system-wide adjustment is performed.
Station selection is the same as with the traverses. The selection of observations, on the other hand, can be done from a list of observations between stations, accessed by pressing the Insert button, or by graphically selecting previously drawn observations.
Network data can be exported or imported by clicking the appropriate buttons. The extension of these file is .RED.
Clicking the Adjust button provides access to the network adjustment window, as long as there are at least two fixed stations. The way this window works is very similar to the Traverses window.
In this case, there is only one least squares method available, which is why there in no possibility of selecting another.
Additionally, once the calculation has been performed, one can view Error Ellipses information by clicking the button with same name.
A report similar to the one described in the previous chapter for traverse adjustment is displayed.
In this case only the Least Squares method is available so there is no possibility of selecting another.
In the dialogue it can be observed that directly under the coordinates a message appears about the Chi-Square test, informing us whether this test has been passed or not.
Furthermore, once the calculation has been carried out, we will see the information about the Error Ellipses, pressing the button with this same name.
A report is obtained which is similar to that described for the traverse compensation in the previous chapter.