Create a Long Section by Object Intersection

Description

Create a long section, from objects intersecting the alignments vertical plane.

Access

Home / Tools / Create / Long Section / Object Intersection

Requirements

Profile module
Active model view

Controls

Control	Description
Name	Type a name for the created long section or click to use the next available auto incremented name. Note: The name for long sections must be unique.
Use name as layer	Do one of the following: Select the checkbox to place the long section on a layer with the same name as the long section. Clear the checkbox to place the long section on the active layer. Note: Place each long section on a different layer so you can control which long sections are visible in the long section view. If a new layer is created it is given the same settings as the layer template. If a layer template has not been specified the active layer settings are used as the default. If a new layer is created, turn the layers visibility on in any existing long section views and viewports where you want the long section to display.
Alignment	Select an alignment from the list that will be used to extract a long section.
Join By	Select one of the following to determine how points extracted from the Object is displayed in a long section view: None - Points extracted from the Object will be used to create isolated points that will display in the long section view. Distance - Points extracted from the Object are joined in the order of their distance along the alignment to create a long section. Object - How the Object intersects with the alignment determines if the extracted points are joined. If a line crosses the alignments vertical plane at one of more locations, a point represents the intersection in a long section view. If part of the line is coincident with the alignments vertical plane, a line represents the intersection in a long section view. If only an objects corner vertex is coincident with the alignments vertical plane a point represents the intersection in a long section view. If an objects face intersects with the vertical plane an open line or closed line is formed using the locations where the face is coincident with the vertical plane.
Start Chainage	Input the chainage to start the vertical plane.
End Chainage	Input the chainage to end the vertical plane.
Object	Input a line, polygon, terrain model or shape to extract a long section from.

Notes

Create a long section using:

A single object - Input an object in the Object box, then click OK.
A selection of objects - Select objects in a model view that you want to use to extract a long section from, then click OK.

The Object must be within the extents of the horizontal Alignment.
Only alignments from the current project can be intersected with an object to create a long section. You can pick an Object from a reference file.
When points or lines are created from the intersection the Source Type and Source Object ID displays the original object type used to compute the intersection.
Objects must not include vertices with default heights.
When joining by distance, points with the same chainage will join the closest 3d distance from the previous point first.
Circular curves, transition curves and splines are approximated using the 'Curve Tolerance' setting in the Create Options for the purpose of determining intersections.
If the Duplicate Chainage dialog displays select the correct distance from the start of the alignment that you want to start or end the vertical plane from.
Point only long sections can only be exported to the LISCAD format.

Possible errors

Error	Description	Solution
Cannot create long section at default heights.	The Object contains default heights so a long section cannot be created.	Assign some heights to the object you are trying to intersect with the alignment.
No intersection found.	The Object does not intersect with the alignments vertical plane within the chainage range specified.	Check the alignment selected is correct and the object is within the specified chainage range.