Set Gradient Axis
The Set Gradient X-Axis Orientation dialog enables you to set the orientation of the X-axis of the gradient fields for gradient calculations. The value is an azimuth; e.g. a value of "90" would denote a positive X-axis pointing East. The X-axis of the gradient field defaults to being coincident with the profile azimuth (PROFILE).
When you define or import a gravity or magnetic survey with gradient components, you should set the orientation of the X-axis. It should not be changed subsequently unless the initial setting was incorrect.
To Set Gradient Axis Orientation
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On the Gradients menu, select Set Magnetic Gradient Orientation or Set Gravity Gradient Orientation. The Set Gradient X-Axis Orientation dialog appears.
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Specify the Orientation of the gradient X axis.
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Click OK. The changes appear in the model.
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