Rotation Angles

Use the Rotation Angles option to convert plunge, dip, pitch and strike to rotation angles so that you can match ellipsoids to particular structures. The resulting X, Y and Z rotation angles are displayed in a separate window.

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Instructions

On the Block menu, point to Grade Estimation, and then click Rotation Angles to display the Rotation Angles Conversion panel.

You can convert either the strike and dip, or the bearing, plunge and dip.

Use strike and dip

Select this option to convert strike and dip to rotation angles. Enter the strike (angle between the strike line and North) and the dip (angle of steepest descent of the plane). Specify whether the dip is down to the right of the strike line or down to the left of the strike line (this is the intersection of the plane with horizontal). You must also specify the pitch (angle between strike line and the plunge line) or the plunge (angle between the horizontal plane and the plunge line). If you specify a pitch, then Vulcan will calculate the plunge and vice versa.

Use bearing, plunge and dip

Select this option to convert bearing, plunge and dip to rotation angles. Enter the plunge direction, plunge and dip. The dip may be to the right or left of the plunge line (see above for a definition of plunge and dip).

Click OK.

A window is opened displaying the strike, dip, dip position, plunge and pitch. Select the OK option to produce the rotation angles. Selecting OK again will return you to the Rotation Angles Conversion panel.