Linear Adjustment tool
Used to get the best fitting line from nodes using a least squares calculation. This command solves the problem of fitting a set of N datapoints to a straight line.
Given the standard equation of a line, y = a + bx, the derivation used in this process is a simple weighted regression, where x and y are known based upon the location of the selected nodes.
The uncertainty of each location is defined by:
The methodology returns the slope of the line and the intercept. Cadastral Mapping Configuration swaps x and y as the slope becomes steeper to get a better fit. The line segment produced is based upon the extents of the datapoint set, N.