General Preferences: Tracing
The various tracing modes and their tolerances can be changed here.
Place a reference point to enable this tab.
Tracing Mode
As you trace, the stage and tracing only move if you click and release the left mouse button outside of the AutoMove area. In the continuous tracing mode, the tracing can pass outside of the AutoMove area without moving as long as the left mouse button is held down.
Continuous Tracing Tolerance
This adjustment controls how smooth the tracing is when using Continuous Tracing mode.
- Fine: smoothest curves, but places more points in the data set.
- Coarse: fewer data points for a given curve, but the curve is not as smooth.
The smoothness of the traced curve must be balanced against the overhead of more data points. Curves with many points are harder to edit.
Z Deviation Warning
The Z deviation warning is intended to detect problems in tracing dendritic structures. Tracing branched structures involves many steps during which mistakes can introduce large jumps in Z. Since Z is the dimension going into and out of the screen it is not always clear that points are not close to each other in Z. The warning discriminant is a micron value. A warning is flagged if the difference of the Z coordinates of two sequential points exceeds this discriminant.
Double Click On Mouse
Select to close a contour with a double-click.