Draw Alignment Sections

Draw Alignment Sections tool draws cross sections along an alignment. Each cross section shows the shape of surface models at a position along the alignment. You can specify the width of the cross sections as a left and a right width perpendicular from the alignment.

The alignment element can be any linear element. Valid element types include lines, line strings, curves, arcs, ellipses, shapes, complex chains, and complex shapes.

The cross sections are drawn as a group of cells that can be freely positioned anywhere in the design file. The arrangement of the cross sections in the group can be defined in Cross sections / Placement category of the TerraModeler Settings.

The design of the elevation range grid drawn for each cross sections is defined by settings in the Draw sections along alignment dialog as well as in Cross sections / Elevation grid category of the TerraModeler Settings. The cross section cells are drawn into the design file on the active level or on several levels that are defined in Profiles / Levels category of the TerraModeler Settings.

To draw alignment sections:

  1. (Optional) Select the alignment element.
  2. Select the Draw Alignment Sections tool.
  3. Identify the alignment element if it has not been selected in step 1. The Draw sections along alignment dialog opens.
  4. Define settings in the dialog.
  5. (Optional) Select surfaces for being displayed in cross sections using the Surfaces button. See Profile surfaces for more information.
  6. (Optional) Define settings for cross section labels using the Labels button. See Alignment section labels for more information.
  7. Click OK in the Draw sections along alignment dialog. The cross section outlines are displayed at the mouse pointer position.
  8. Define the location of the group of profile cells in a design file top view with a data click. This draws the cross sections into the design file.
Setting: Effect:
Start station Start station value of the alignment element.
End station End station value defined by the length of the alignment element:

•     Increasing – stations values are increasing from start to end station.

•     Decreasing – station values are decreasing from start to end station

From station First station on which a cross section is drawn.
To station Last station from which a cross section can be drawn.
Interval Station interval between two successive cross sections. Determines the number of cross sections drawn.
Left width Cross section width perpendicular to the left from the alignment.
Right width Cross section width perpendicular to the right from the alignment.
Horizontal Horizontal scale which defines the intended plotting scale.
Vertical Vertical scale which defines the elevation exaggeration as the ratio of horizontal / vertical scale.
Color Color of the elevation range grid lines and labels.
Binding Defines how the elevation range changes along the alignment:

•     Stays constant – the range stays the same as for the first cross section.

•     Follows 3d alignment – the range is adjusted to the elevation of the alignment at the cross section location.

•     Follows surface – the range is adjusted to the elevation of the selected Surface at the cross section location.

From Lowest elevation range value for the first cross section. The 1. z value next to the field shows the elevation value at the first cross section location.
To Highest elevation range value for the first cross section.
Step Vertical step size of the elevation range.
Label binding elevation If on, the binding elevation is labeled by a text and a guide line in each cross section.
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