A vGIS problem or a data issue?
Occasionally, even after the most precise calibration, objects in vGIS may appear off their actual locations. For instance, Fig. 1 shows a difference of approximately 1.5m/5ft between the pipe location as identified using traditional tools (faint yellow markings on the right) and the vGIS-suggested location (the bright dashed line and the underlying pipe on the left).
There are two possible reasons for the discrepancy: a vGIS calibration problem or a data issue. To validate the cause, press the “Map” button to switch to the aerial view.
If, in the aerial view, the user’s location appears correct and objects around the user appear in the same locations as in the first-person view, there is a likely data issue. Simply use the “Report” function to capture and report the discrepancy.
If the aerial view shows a user location different from the real-world location, or object placement around the user is incorrect, it is likely a calibration issue. Press the “Recalibrate” button to adjust your position and fix the issue.
In the example captured in Fig. 2, the user location (blue dot) matches that shown in the first-person view (Fig. 1; white circle), and the pipe (solid yellow line) appears on the “wrong” (left) side of the user, also matching the first-person view. The conclusion: the GIS data are incorrect and require updating.