moisture {DierckxSpline}R Documentation

Volumetric moisture content

Description

16 measurements of volumetric moisture content

Usage

data(moisture)

Format

a data.frame with the following columns:

Details

Dierckx (1993, Table 7.2, pp. 129-131)

Source

Dierckx, Paul (1993), Curve and Surface Fitting with Splines, Springer.

Examples

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)


[Package DierckxSpline version 1.1-2 Index]