ABSTRACT
In Chapter 4, digital terrain surface modeling was discussed. It was pointed out that grid-and triangle-based modeling approaches are more widely used than point-based approaches. For grid-based modeling, a grid network needs to be formed through a random-to-grid interpolation, if the original data are not in grid form. The discussion of interpolation methods will be conducted in Chapter 6. On the other hand, for triangle-based modeling, a triangular network needs to be formed through a triangulation procedure if the data are not in grid or triangular form. The formation of triangular irregular network (TIN) from irregularly distributed data is discussed in this chapter.
