Trace Mode

Trace mode can be utilised to create new features or reshape existing by tracing over a single feature geometry or multiple features if they are part of a topology. Trace mode is located on the Context bar (see Context Bar).

Different trace routes can be cycled through using the switch trace route button, routes are found in this order:

• The shortest path along the topology if a topology is present (the map view does not need to be in topology mode).
• The route around the same source feature, first in one direction, then another.

Using Trace Mode

1. Create a line along desired feature using the Create Line Geometry function in the Create Data bar (see Create Data Bar).
   



Digitising the initial line along an existing vector

2. Select Trace mode to trace around existing geometries.

3. Select the point where the trace will end.

   

   The start and end point of the trace are selected

4. If complete click Accept to complete the Trace operation or select the Cycle tool in the Trace context bar to cycle through options until desired path is created.

   

   The Trace tool context bar, including the accept and cycle feature

5. Continue to digitise additional vertices or click accept again to create the final line feature operation.

   Note: Note that the trace operation needs to be accepted in order to finish the trace and continue the original digitising operation. This means that if the end of the trace marks the end of digitising then accept needs to be pressed twice.

   

   Trace completed around existing topology features