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Figure 45. Surface grid computed by CPS-3 based on the data shown in Figure 44. The 

 nodes are uniformly spaced compared with the locations of the original 

 soundings. A grid does not necessarily have to be square, although this is 

 common 



smoothed away! Along a rocky coast, for example, high pinnacles may 

 indeed project above the surrounding seafloor. 



The gridding algorithms in CPS-3 include: 



• Convergent (multi-snap). 



• Least squares with smoothing. 



• Moving average. 



• Trend. 



• Polynomial. 



Chapter 5 Analysis and Interpretation of Coastal Data 



113 



