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A great way to have both the benefits of a human interpretation with the speed and flexibility of using a computer is to adopt a hybrid approach of shaping computer grids with interpreter-drawn contour lines and points.
There are several ways to modify and alter a computer-generated grid into a more geologically-sound interpretation: hand drawn overlay lines, adding control points, and individually tweaking grid points. Overlay lines come in several different classes normal, contour, unconformity, and fault. While normal lines are just for displaying visual information (like section outlines or roads), contour, unconformity, and fault lines can also be used to influence the gridding process.Contour lines can be edited via the map overlay feature. Contour lines can be "captured" into one of the overlay layers and manipulated as any other overlay line.
Related Topics
Adding Hand Drawn Overlay Lines and Faults
Capturing Contour Lines to the Overlay
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