View source: R/sw_Pedotransfer_Functions.R
rSW2_SWRC_PTF_estimate_parameters | R Documentation |
SWRC
)
using selected pedotransfer function (PTF
) that are implemented in R
Estimate parameters of selected soil water retention curve (SWRC
)
using selected pedotransfer function (PTF
) that are implemented in R
rSW2_SWRC_PTF_estimate_parameters(
ptf_name,
sand,
clay,
fcoarse,
bdensity = NULL,
fail = TRUE,
...
)
ptf_name |
An character string or vector.
The selected |
sand |
A numeric value or vector.
Sand content of the matric soil component
(< 2 mm fraction; units of |
clay |
A numeric value or vector.
Clay content of the matric soil component
(< 2 mm fraction; units of |
fcoarse |
A numeric value or vector.
Coarse fragments, e.g., gravel, (> 2 mm; units of |
bdensity |
A numeric value or vector.
Density of the whole soil
(matric soil plus coarse fragments; units |
fail |
A logical value. If requested |
... |
Additional parameters passed to selected |
swrcp
, i.e,.
a numeric matrix where rows represent soil (layers) and
columns represent a fixed number of SWRC
parameters.
The interpretation is dependent on the selected SWRC
.
However, return value is NULL
only if fail
is FALSE
and requested PTF
is not implemented in R
.
ptf_estimate()
is the function that should be directly called; this here
is an internal helper function.
See SWRC_PTF_estimate_parameters()
in SOILWAT2
for PTFs
implemented in C.
Cosby, B. J., G. M. Hornberger, R. B. Clapp, & T. R. Ginn. 1984. A statistical exploration of the relationships of soil moisture characteristics to the physical properties of soils. Water Resources Research, 20:682-690, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1029/WR020i006p00682")}
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