gaussian.RdModel functions for fitting symmetric or skewed bell-shaped/biphasic dose-response patterns.
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.