Advanced or Special Topics

One or more of these topics may be of interest to you, especially if you are active in the design of Walls or similar software.  The topics are not necessarily related, and none of the information is needed for effective use of the program.

Workfiles Created by Walls

Choice of Mathematical Model

Error Propagation in Long Traverses

GPS Position Accuracy Table

Statistical Formulas

Tree Survey Example

The Missing Measurement Problem

Height Measurement Pitfalls

Accessing Walls from Other Applications

Regular Expression Searches

Floating Traverse Chains