The RMS Calibration Settings dialog provides you with information about each calibration point and the RMS error value calculated for your calibration points. The coordinate positions of the points in the digitizer's grid referencing system are determined when you digitize calibration points. Didger uses the selected Georeference Method to compute the error between the tablet coordinates and the digitized coordinates. This allows Didger to orient and scale the project.
For the tutorial example, the RMS value is not critical, but you might want to watch this value closely when you are working on an actual project. For further information on RMS errors, refer to the RMS Calibration Settings topic and the online help book, RMS Error.
To select the georeference method:
In the RMS Calibration Settings dialog, verify that Affine Polynomial is set for the Georeference Method.
Click Next to open the Calibration Settings dialog.
The RMS Calibration Settings dialog displays the Total RMS value for the calibration.
If this value is too high, click Back and click on the calibration points on the tablet again.
Back to Create Calibration Points
Next to Calibration Settings