Enter the datum elevation. This is used only for calculating the volume between the irregular surface represented by the DTM, and the horizontal datum plane. May be any number.
Enter the minimum elevation for which you would want contours to be created. Originally set to the data layer's lowest 3D locus or 3D polygon vertex. For a cut & fill DTM, this would typically be less than the maximum cut (negative if there is cut).
Enter the maximum elevation for which you would want contours to be created. Originally set to the data layer's highest 3D locus or 3D polygon vertex. For a cut & fill DTM, this would typically exceed the maximum fill depth.
Click this button to view or change view options, such as whether to display contour lines. You will be returned to this dialog box after you finish with the view options dialog box.
Enter the base elevation which you would want contours to be based upon. This can be used to make odd contours, such as 1,3,5,7,etc., by entering the number 1. This is usually set to 0, but may be any number.
The current lowest point among the relevant 3D loci or polygon vertices (for a new DTM), or in the current layer's associated DTM. For a cut & fill DTM, shows highest elevation of "from" DTM minus lowest elevation of "to" DTM.
The current highest point among the relevant 3D loci or polygon vertices (for a new DTM), or in the current layer's associated DTM. For a cut & fill DTM, shows highest elevation of "to" DTM minus lowest elevation of "from" DTM.
Enter the positive integer representing the number of contour lines per index contour. For example, to get a major contour line at every fifth contour, enter 5.
Enter the desired contour interval. Does not need to be an integer, but must be greater than zero. You can change this without recalculating the DTM.
Cancelling will return you to where you were before bringing up this dialog box; no changes will be applied or retained.
Clicking this button will apply any changes you've made. If you brought up this dialog box from within another dialog box, changes won't be applied unless and until you click Apply or OK in that other dialog box.
