Assign Elevations

Click the Map | Data | Assign Elevations command to quickly add incremental elevation values to polyline objects, such as contour lines. At least three polylines must exist in the project for the command to be available.

To add elevation values to a set of polylines:

Click the Map | Data | Assign Elevations command.
The pointer changes to .
Click just before the lowest elevation polyline.
Hold down the left mouse button and drag a line across the polylines you want to increment.
Release the left mouse button just after the highest elevation polyline.
The selected polylines are highlighted in green and the Assign Elevations dialog opens.

Set the Starting Elevation, Increment Value, and the

ID to assign the Z value in the Assign Elevations dialog.

Highlight the existing value in the box next to the Starting Elevation option and type the desired first elevation value.
Highlight the existing value in the box next to the Increment Value option and type the desired contour level increment. This is the elevation difference between adjacent contours.
Click on the existing ID in the Assign to Data option and select the desired ID from the list. The Z value will be written to this ID. If information already existed for this ID, the information is overwritten by the Z value.
Click OK.

The incremental contour values are assigned to the contour lines and populated in the selected data field. You can open the Data Manager to view the changes in the data fields.

All contour lines that intersect the red line are assigned an elevation

value based on the values entered in the Assign Elevations dialog.

Note that the command does not work on polygons. Polygons must first be converted to polylines to use the Assign Elevations command.