During point import, use some format column names to adjust point elevation values during point import.
Use the following columns:
- Thickness: Include this column name in the format if your data includes surface thickness values, such as the thickness of a layer of topsoil or clay. The value in the Thickness column can be subtracted from the value in the Elevation column when points are imported or transferred.
- Z+: Include this column name in the format to define a column for point data that was taken at a height above the datum elevation. The value in the Z+ column can be added to the value in the Elevation column when the points are imported or transferred.
- Z-: Include this column name to adjust the elevation of a point in a file. The value in the Z- column for a point can be subtracted from the value in the Elevation column when the points are imported or transferred.
The values specified for Thickness, Z+, or Z- in the point data file are not automatically used to adjust the elevation during import or export. Select the Do Elevation Adjustment If Possible option when importing points when you want elevation adjustments to occur.