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Least Squares

Process Error Figure data from the spreadsheet.

This function allows you to calculate a straightforward least square solution.

An erroneous ray can cause the calculation to iterate outwards. If this happens, a solution is not possible and it is recommended that a graphical error figure be executed to locate the rogue observation. A listing of the results is printed with the residuals.

An option is provided to accept or reject the calculated co-ordinates for the fixed station, so make sure that the Output window is visible first.

Procedure

1. The coordinates of the point are calculated and outputted according to the options specified in the Output Manager.

2. The following Confirmation message displays. Click Yes to have the provisional coordinates updated to the calculated coordinates; or No to retain the current point coordinates.