residuals.gsl_nls: Extract model residuals

In gslnls: GSL Nonlinear Least-Squares Fitting

Extract model residuals

Description

Returns the model residuals from a fitted "gsl_nls" object. resid can also be used as an alias.

Usage

## S3 method for class 'gsl_nls'
residuals(object, type = c("response", "pearson"), ...)

Arguments

object	An object inheriting from class "gsl_nls".
type	character; if "response" the raw residuals are returned, if "pearson" the Pearson are returned, i.e. the raw residuals divided by their standard error.
...	At present no optional arguments are used.

Value

Numeric vector of model residuals similar to residuals.

See Also

residuals

Examples

## data
set.seed(1)
n <- 50
xy <- data.frame(
  x = (1:n) / n, 
  y = 2.5 * exp(-1.5 * (1:n) / n) + rnorm(n, sd = 0.1)
)
## model
obj <- gsl_nls(fn = y ~ A * exp(-lam * x), data = xy, start = c(A = 1, lam = 1))

residuals(obj)

gslnls documentation built on Jan. 17, 2023, 5:15 p.m.