Description Usage Arguments Value Author(s) References See Also Examples

A `selfStart`

model that evaluates the Load Bearing Capacity
(Dias Jr., 1994) function and its gradient. It has an initial attribute
that creates initial estimates of the parameters b0 and b1.

1 | ```
SSlbc(theta, b0, b1)
``` |

`theta` |
a numeric vector of soil moisture values at which to evaluate the model. |

`b0` |
a numeric parameter. |

`b1` |
a numeric parameter. |

a numeric vector with the same length of `theta`

. It is the value of the
expression *10^{(b0 + b1 * θ)}*. Also, the gradient matrix with respect
to the parameters is attached as an attribute named *gradient*.

Anderson Rodrigo da Silva <[email protected]>

Dias Junior, M. S. (1994). *Compression of three soils under longterm
tillage and wheel traffic*. 1994. 114p. Ph.D. Thesis - Michigan
State University, East Lansing.

`getInitiallbc`

, `fitlbc`

, `selfStart`

,
`nls`

, `sigmaP`

1 2 3 4 5 6 7 8 | ```
data(compaction)
attach(compaction)
ss <- SSlbc(Mois, 2.79, -2.33)
ss[1:50] # prediction
PS # original data of preconsolidation stress
ss # prediction and gradient
# End (not run)
``` |

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