Description Usage Format Details Source Examples
16 measurements of volumetric moisture content
1 |
a data.frame with the following columns:
xproperty
ymeasurement
vconstant 1
w Weight: constant 1 except for the first 2 and the last observations, being 10, 3, 10, respectively.
Dierckx (1993, Table 7.2, pp. 129-131)
Dierckx, Paul (1993), Curve and Surface Fitting with Splines, Springer.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | data(moisture)
moisture # Dierckx, Table 7.2, p. 130
## Not run:
f1 <- with(moisture,
concon(x, y, w, v, s = 0.2))
f2 <- update(f1, s = 0.04)
f3 <- update(f1, s = 0.0002)
g1 <- with(moisture,
curfit(x, y, w, method = "ls",
knots = knots(f1)))
g2 <- update(g1, knots = f2)
g3 <- update(g1, knots = f3)
## End(Not run)
|
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