file:introduction-to-contouring-geological-data-with-a-computer_fig7.png|{{figure number|7}}A representation of the fourth-order polynomial of Figure 4 contoured on a grid prepared using a nearest neighbor search criterion. | file:introduction-to-contouring-geological-data-with-a-computer_fig7.png|{{figure number|7}}A representation of the fourth-order polynomial of Figure 4 contoured on a grid prepared using a nearest neighbor search criterion. |