locfit (version 1.1-11)

crita: Substitute critical values on ``locfit'' object.

Description

Every locfit object contains a critical value object to be used in computing and ploting confidence intervals. By default, a 95% pointwise confidence level is used. To change the confidence level, the critical value object must be substituted using crit and crit<-.

Usage

crit(fit) <- crit(fit, cov=0.95)

Arguments

fit

locfit object.

Value

• Critical value object generated by crit or kappa0.

See Also

locfit, plot.locfit, kappa0, crit.

Examples

# compute and plot 99\% confidence intervals, with local variance estimate.
data(ethanol)
fit <- locfit(NOx~E,data=ethanol)
crit(fit) <- crit(fit,cov=0.99)
plot(fit,band="local")

# compute and plot 99\% simultaneous bands
crit(fit) <- kappa0(NOx~E,data=ethanol,cov=0.99)
plot(fit, band="local")