To create stereonet contours

Stereonet contours are used to help identify discontinuity sets once a stereonet has been created. The contours represent density distributions of poles and can be set as either wireframe or flat shaded regions. The user can adjust custom bandwidths of pole distribution and assign custom colours to these bandwidths. Smoothing and Terzaghi weighting are also options.

1. Select Geotechnical > Stereonet contours...

2. Drag and drop the stereonet into the Stereonet to contour field.

3. Select whether you want contours around poles or intersections. Select the colours and values for the percentage bandwidths to represent the data concentration.
4. Check Smoothing if required.
5. Check Terzaghi weighting if required.

Terzaghi weighting uses the measurement orientation to counteract the sampling bias.

The Minimum angle is the lowest angle between the measurement orientation and the discontinuity that will be used for weighting.

6. Click OK to generate contours. The contours are saved in the stereonet container.

Note: Contours can be displayed as wireframe or flat shaded. Select the contours, then select Color > Surface appearance to change the contour display mode.                    

Stereonet contour (wireframe) and legend.

Stereonet contour (solid) and legend.