PTF05: PTF05

In melwey/euptf: Hydraulic pedotransfer functions for Europe

PTF05

Description

PTF05 is a linear regression based PTF predicting the saturated water content (THS) from PSD T/S, OC and BD.

Usage

data(PTF05)

Format

A list of 8:

t

Rxp numeric matrix with the results of running PTF05$R times lm on PTF05$formula.

R

a scalar giving the number of resamplings

n.train

a scalar giving the number of observations in the training set

n.total

a scalar giving the total number of observations used in the crossvalidation

call

call

meth

character. Dataset on which the PTF was trained.

formula

Class 'formula'. Here: THS ~ 1 + I(1/(OC + 1)) + I(1/(OC + 1)):I(BD^2) + I(BD^2) + TOPSOIL + TOPSOIL:I(BD^2) + USCLAY + USCLAY:TOPSOIL + USSILT + USSILT:USCLAY + USSILT:I(BD^2) + USCLAY:I(BD^2)

median_model

Named numeric vector of length p with the median values of columns of PTF05$t.

Details

PTF05 was obtained by running PTF05$R times lm on PTF05$formula. The formula was built based on cross-validated stepwise selection.

References

Tóth Brigitta, Weynants Mélanie, Nemes Attila, Makó Andras, Bilas George and Tóth Gergely. 2014. New generation of hydraulic pedotransfer functions for Europe. European Journal of Soil Science. in Press.

See Also

predict.ptf, ChoosePTF, ptf.data

melwey/euptf documentation built on Sept. 17, 2022, 3:35 a.m.