Block parameters
Block size X/Y/Z
Enter the cell size. The first field is for the X dire4ction, second for the Y direction, and third for the Z direction.
Discretisation steps in X/Y/Z
The variance is obtained by discretising the block and calculating the average variogram value for all possible pairs. The X, Y, Z discretisation parameters control the number of pairs to consider. In practice, a 5 x 5 x 5 discretisation is appropriate to obtain a robust estimate of the average variogram. Too many points may lead to numerical precision problems. A large number of grid points can cause Vulcan to run slowly. A 4 × 4 × 4 grid is usually sufficient. In no case should there be more than 10,000 grid points.
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