Page 316 - Numerical Analysis Using MATLAB and Excel

Chapter 7 Finite Differences and Interpolation

size(zzi)

ans =
111 71
zmax=max(max(zzi)) % Estimates the peak of the terrain

zmax =
500.2108

m =
111
n=
9
xmax =
20
ymax =
275
x
These values indicate that z max = 500.21 where the and coordinates are x = 20 and
y
z
y = 275 . The interpolated value of at x = 108 m and y = 177 m is z = 500.192 . The plot is
shown in Figure 7.11.

Figure 7.11. Plot for Example 7.15

7−38 Numerical Analysis Using MATLAB® and Excel®, Third Edition
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