residuals.gsl_nls function

Extract model residuals

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

## 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.

Returns

Numeric vector of model residuals similar to residuals.

Examples

## data
set.seed(1)
n <- 25
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)

See Also

residuals