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If the calculation process fails, the message “Error in 7 parameters calculation” appears.
If the calculation is successful, the results are shown in the Datum Parameters and
Transformation Residuals window.
By default, the transformation residuals are computed in the NEU system. To change
the NEU to the XYZ-system, right-click somewhere in the Transformation Residuals
panel and select the XYZ type.
The transformation residuals may be shown in table format. For this, press the
table button. The following window will be opened:
Show
By default, the residuals in this table are displayed in the same format that has been
selected for the graphic representation. To change the format, right-click somewhere in
the Transformation Residuals window and select the format needed.
The analysis of the transformation residuals helps the user detect possible blunders in
the WGS84 or local coordinate sets. The user can identify the points having critical or
abnormal residuals. To check on a “suspicious” point, exclude this point from both the
lists and re-compute the transformation parameters. If the updated residuals look
satisfactory and the problem appears to be fixed, then this indicates that it was indeed a
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