Description Usage Arguments Details Value Note Author(s)
Model functions for fitting symmetric or skewed bell-shaped/biphasic dose-response patterns.
1 2 3 4 5 6 | gaussian(fixed = c(NA, NA, NA, NA, NA), names = c("b", "c", "d", "e", "f"),
method = c("1", "2", "3", "4"), ssfct = NULL, fctName, fctText, loge = FALSE)
lgaussian(fixed = c(NA, NA, NA, NA, NA), names = c("b", "c",
"d", "e", "f"), method = c("1", "2", "3", "4"), ssfct = NULL,
fctName, fctText, loge = FALSE)
|
fixed |
numeric vector. Specifies which parameters are fixed and at what value they are fixed. NAs for parameter that are not fixed. |
names |
a vector of character strings giving the names of the parameters (should not contain ":"). The default is reasonable (see under 'Usage'). The order of the parameters is: b, c, d, e, f (see under 'Details'). |
method |
character string indicating the self starter function to use. |
ssfct |
a self starter function to be used. |
fctName |
optional character string used internally by convenience functions. |
fctText |
optional character string used internally by convenience functions. |
loge |
logical indicating whether or not e or log(e) should be a parameter in the model. By default e is a model parameter. |
Details yet to be provided.
The value returned is a list containing the nonlinear function, the self starter function and the parameter names.
The functions are for use with the function drm
.
Christian Ritz
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