Calculate Values from 3D Lines¶

Use this dialog to calculate table values from 3D lines for a surface.

Preparations¶

The 3D lines must be coded with surface code and sorted, see the example below.

Example of 3D lines coded with surface code

With this option, the program calculates both the width and slope for the surface.

Profile	Width	Slope
100	2	-0.5
200	2	-0.5

If you select only Slope, the width for the surface will be undefined. This is a common choice for surface groups 5, 6, and 7.

Profile	Width	Slope
100	-	-0.5
200	-	-0.5

With this option, the program extrapolates table values for the surface in areas where there are no calculations from the 3D lines.

Values for surface -7.01: The fill is undefined between profile 18 and profile 41 according to the 3D lines.

Undefined area between profile 18 and 41

In the example above, there may be two situations: the slope may be the same or different before and after the undefined area.

Option not active:

Option active:

Profile	Width	Slope
0	-	-0.5
53	-	-0.5

Option not active:

Option active:

To avoid too many unnecessary table values due to small differences, you can set a tolerance value.

Without tolerance value:

With tolerance value 0.01:

Profile	Width	Slope
0	-	-0.500
19	-	-0.501