Merge irregular lines

You can merge two intersecting captured irregular lines to split each of the lines at the locations they intersect.

You will most commonly merge two intersecting captured irregular lines where you have captured a new irregular line (e.g. water boundary) and it intersects with an existing irregular line that you have adopted into your survey.

Merging irregular lines splits the segments at the intersection(s) of the existing and new lines. Unnecessary line segments from the existing irregular boundary can be deleted. 


  • You can choose to include new irregular boundaries in your survey for various reasons including:  
    • areas of accretion and erosion have changed the irregular boundary
    • a new definition of an irregular boundary captured for your survey is considered to be a better definition and will replace an existing irregular boundary definition.  

      In these instances the existing irregular boundaries may intersect with the new irregular boundary lines. This creates parcels and boundary line segments that are not required as part of the final survey parcel definitions.  
  • Merging irregular lines can create pseudo vectors. These are system-calculated vectors between a system-added mark and the nearest existing surveyed or Landonline mark.  
    • Pseudo vectors hold the positions of intersected irregular boundary lines until the new positions are authorised.  
    • Given pseudo vectors are automatically determined by Landonline, and are not calculated by the signing surveyor, dimensions of those pseudo vectors should not be adopted in future surveys.
    • You should not delete pseudo vectors unless you need to delete the system-added mark. In this instance you are better to replace the original irregular boundary.  
    • System-added pseudo vectors are automatically created with the Nbdy layer, therefore they will have no survey class. 

What to do 

  1. Right click in the spatial view to bring up the menu option, and select Merge irregular lines.
    Screenshot of right click to select merge irregular lines
  2. The Merge irregular lines panel will appear asking you to ‘select the two irregular lines to be merged’. Select Esc if you want to return to the spatial view. 
    Screenshot of merge irregular lines panel
  3. Select the two lines to merge. They will highlight pink. 
    Screenshot of selecting irregular lines in spatial view
  4. Select Continue to merge the lines or Esc to cancel. 
    Screenshot of select irregular lines select continue
  5. The merged lines split into a series of segmented lines in the Irregular lines tab, in the Lines panel, as Landonline creates intersections where the lines intersect.  
    Screenshot of irregular lines tab in lines panel

    Landonline has added system-generated marks and created pseudo vectors between existing marks and the system generated marks. 

    • On the Marks panel, these marks will be identified with the Name of LOL and the State will be System Added. The row’s values will be ‘greyed out’ and cannot be edited.
    • In the Vectors panel, the pseudo vectors will appear with Excl in the Marks column, with the Bearing Type and Dist Type fields being Pseudo. The row’s values will be ‘greyed out’ and cannot be edited
    • When you complete a plan generation, pseudo vectors appear in the Mark and Vector report. 
  6. Delete each segment of irregular line you don’t require. 

  7. The merged line will display as two (or more) lines intersecting with a system added mark (marked with a greyed out LOL) which can be edited in the Irregular lines tab, in the Lines panel. See edit the Irregular line attributes. 

    Screenshot of irregular lines two or more lines merged


The layer defaults to its previous layers. If you need to, modify the topology layer.

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