Add Freehand Set Window

The Add Freehand Set Window option allows you to create a set window by drawing a freehand polygon or "lasso" around a grouping of poles.

Sets created with the Add Freehand Set Window option are equivalent in all respects to sets created with the other set window options (Add Curved Set Window or Add Circular Set Window). All of the same rules apply, and the mean plane calculations are the same regardless of the method of window selection.

To add a Set Window:

1. Select Sets > Add Freehand from the Stereonet 2D (or Rosette) ribbon.
2. Left-click to place the points of the freehand window (analogous to drawing a polygon), or Left-click and drag (analogous to drawing with a pencil).
3. Hit ENTER or right-click and Done to finish drawing.
4. The Edit Freehand Set Window dialog appears with options to modify the Name, Color, Orientation, Primary Window, Secondary Window and Set Statistics.
5. The Primary Window (and/or Secondary Window) can also be redrawn by clicking the Draw button or edited in a table by clicking the Edit Coordinates button.
6. Complex windows can be created with a Secondary Window using the Draw button. Ensure that the Wrapped checkbox is selected for wrapped poles. See the Wrapped Sets topic for more information.
7. Click OK to finalize the Freehand Set Window and add it to the view.

Name

The Name acts as the set's identifier and must be unique (i.e., two Sets cannot have the same Name).

Color

The Color provides a graphical way to identify the Set Window. For any given Set Window, the Color is shared between all views.

Window Limits

The Primary Window and Secondary Window can be modified either in the Edit Freehand Set Window dialog or redrawn graphically.

Set Statistics

Confidence and Variability limits can be computed for the selected intervals.