qpcR (version 1.1-8)

confband: Confidence bands for a sigmoidal fit

Description

Calculates the confidence band for a fitted 'drc' model.

Usage

confband(object, level = 0.95)

Arguments

object

an object of class 'drc'.

level

the confidence level, defaults to 0.95.

Value

• A list with the following components:
• x
  the x values, i.e. cycle number.
• clo
  the response values of the lower confidence limit.
• cup
  the response values of the upper confidence limit.

Details

Calls the predict.drc function from the 'drc' package. The confidence intervals are based on asymptotic normality.

See Also

Also implemented in the pcrplot function for plotting the confidence bands.

Examples

m <- pcrfit(reps, 1, 2, l5())
###with 99 percent confidence interval
ci <- confband(m, level = 0.99)
print(ci)
###plotting the confidence bands
pcrplot(m, confband = 0.99)