| moisture {DierckxSpline} | R Documentation |
16 measurements of volumetric moisture content
data(moisture)
a data.frame with the following columns:
Dierckx (1993, Table 7.2, pp. 129-131)
Dierckx, Paul (1993), Curve and Surface Fitting with Splines, Springer.
data(moisture)
moisture # Dierckx, Table 7.2, p. 130
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)