Graphics Programs Reference
In-Depth Information
Boreholes
Boreholes
a
b
Quarry
Samples
Boreholes
c
d
Samples
Samples
e
Fig. 1.2
Sampling schemes.
a
Regular sampling
on an evenly-spaced rectangular grid,
b
uniform sampling
by obtaining samples randomly-located within regular grid squares,
c
random sampling
using uniform-distributed
xy
coordinates,
d
clustered sampling
constrained by limited access, and
e
traverse sampling
along road cuts and river valleys.
