Traverses
 Fieldwork In Traversing
 Control By Traversing
 Angular Closure
 Linear Closure
 Adjustment Of Traverses
 Function Of Traverses
 Missing Data
 Bearing And Distance Of
    One Line
 Bearing Of One Line,
    Distance Of Another
 Lengths Or Bearings Of
    Two Lines

Traverses - Missing Data

Introduction

As a rule traverses are always closed, either onto them selves or between known points so that an estimate of accuracy and precision can be obtained, as well as a check on our fieldwork. There are rare occasions where traverses cannot be closed, and more commonly there are situations where open traverses run off a rigorous network are used to determine the dimensions of features that are not readily accessible.

The use of traversing procedures and calculation to determine these dimensions is based on the mathematics of a closed traverse. That is, the data that is missing from the traverse is presumed to be that which would close the traverse. If we adopt this procedure, then an additional condition applying to our measurements is known

Missing data

The missing elements of a traverse polygon that can be solved for are as follows:

Bearing and Distance of One Line
Bearing of One Line, Distance of Another
Lengths or Bearings of Two Lines
Conclusion

Only two missing elements can be determined as there are only two redundancies in a traverse network.