R: Extract Model Coefficients

coef.drc {drc} | R Documentation

## Extract Model Coefficients

### Description

Extract parameter estimates.

### Usage

      ## S3 method for class 'drc'
    coef(object, ...)

### Arguments

`object` | an object of class 'drc'.
`...` | additional arguments.

### Value

A vector of parameter coefficients which are extracted from the model object 'object'.

### Note

This function may work even in cases where 'summary' does not, because the parameter estimates are retrieved directly from the model fit object without any additional computations of summary statistics and standard errors.

### Author(s)

Christian Ritz

### See Also

A more comprehensive summary is obtained using `summary.drc`.

### Examples

    ## Fitting a four-parameter log-logistic model
    ryegrass.m1 <- drm(rootl ~ conc, data = ryegrass, fct = LL.4())
    coef(ryegrass.m1)

[Package drc version 3.0-1 Index]