Join Objects

Join lines, alignments or shapes (pipes).
Create an island polygon or island lot in a polygon, join polygons with a single shared internal edge or join two disconnected polygons.

Home / Tools / Modify / Join

• Solve module

• Join:
  • Two objects - Input two objects to join. The joined line is created automatically.
  • A selection of objects - Objects in the current selection will be considered for joining. Click OK to join the line.
• Only objects of the same type can be joined.
• Lines, alignments and pipes are connected when they share a start or end vertex or if the start or end coordinates are identical.
• Only connected alignments with the same horizontal design standard can be joined.
• Lines, alignments and pipes may be reversed when joining connected lines.
• Polygons are connected when one polygon is fully enclosed by the other polygon or when polygons share an internal edge.
• When disconnected objects are joined, the line geometry remains discontinuous. A segment is not drawn between the two objects.
• If you input the two objects to join, the newly created object retains:
  • The first objects layer.
  • The first objects appearance.
  • The first objects attributes will be retained if the second objects attribute do not conflict.
  • The diameter from the first shape (When joining pipes).
  • The first alignment as the start of the alignment (Alignments are reversed if necessary.)
  • The start chainage and alignment velocity from the first alignment.
• If you join selected objects, the newly created object inherits:
  • The most frequently used layer. If all layers are used equally the layer of the object with lowest unique id is used.
  • The appearance from the object with the lowest unique id.
  • Attributes common to all joined objects. Objects attributes will be retained if
    • The attribute definition on each of the objects layers is identical.
    • The values assigned to all instances of the attribute are identical.
  • The diameter from the shape with the lowest unique id (When joining pipes).
• The start chainage is reset to zero when selected alignments are joined.
• Attributes are not retained after a join if there were multiple instances of the same group for a single object prior to the join.
• When forming island polygons from a selection, the second largest polygon that is completely contained in the largest polygon is used to form a hole or island polygon in the largest polygon.
  • If there are additional polygons completely contained within the second the polygon, additional island polygons may be formed.
  • To create an additional island in the island polygon, select all 3 polygons and select the Join disconnected objects checkbox.
  • To create island lots, copy the internal polygon prior to joining. Join the external and internal (1 only) polygons. Filter the vertices of the new polygon and the copied polygon.
• Text linked to lines, alignments or polygons is deleted when the linked object is joined.

Connected Objects

Disconnected Objects

Unsupported Objects

Island Polygon (Before and after join.)

Multiple Island Polygons (Before and after join.)

Island within an Island Polygon (Before and after join.)

Island Lot (Before and after join.)

• Controls
• Create a Line
• Create a Polygon
• Modify Tool
• Modify Filter