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Pitch Grid

A Pitch Grid can be used to graphically measure the angle between two features on a stereonet.

To add a Pitch Grid to the plot:

  1. Select Pitch Grid from the Tools menu.
  2. Move the cursor over the active view. A great circle corresponding to the cursor position will be visible, with radial lines representing pitch angles. The pitch lines are at 5 degree increments and are oriented with respect to the strike of the plane.

To estimate an angle:

  1. Move the cursor until the plane passes through the two features in question.
  2. Click the left mouse button to add the pitch grid to the plot.
  3. Count the pitch lines between the two features and multiply by 5 degrees. This is the angle between the features.

Other uses for the pitch grid will become apparent as you become familiar with Dips.

After a Pitch Grid has been added, it can be moved, formatted, etc. See the Edit Tools Overview topic for details.

NOTE: For more precise angle measurements on the stereonet, use the Measure Angle Measure Angle icon option.

Right Click Options

The following options are available in the right-click menu while using Pitch Grid:

  • Line – this will display a moving line through the center of the stereonet, which follows the cursor. Note that this line is NOT added to the plot when you add the Pitch Grid, it is a temporary graphical aid only. If you wish to add a line to the plot, use the Trend Line option.
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