Geoscience Reference
In-Depth Information
P
q
®
=
2
Fig. 2.20. A template
¸
= 36°20'
30'
40'
36°50'
45°30'
q
20'
'
=
45°10'
Fig. 2.21. Blocks formed by a grid of ellipsoidal coordinates
The template method is wonderfully easy to understand and to use for
theoretical considerations, but completely old-fashioned. Only the gridline
method has survived in the computer world.
As a simple and instructive example illustrating the principles of numer-
ical integration consider Stokes' formula
∆
gS
(
ψ
)
dσ
R
4
πγ
0
N
=
(2-407)
σ
with its explicit forms (2-310) for the template method and (2-317) for the
method that uses fixed blocks.
