ci {lm.br} | R Documentation |
Confidence Interval for the Changepoint
Description
Confidence interval for 'theta', the changepoint's x-coordinate.
Usage
## S4 method for signature 'Cpp_Clmbr'
ci( CL =0.95, method ="CLR", output ="T" )
Arguments
CL |
confidence level, between 0 and 1. |
method |
"CLR" or "AF" which stand for conditional likelihood-ratio or approximate-F, see |
output |
"T", "V" or "B" which stand for text, value or both. |
Details
This subroutine scans to determine the postulate values of 'theta' that have significance level greater than 1-CL.
Value
'ci' prints-out the confidence interval for 'theta' but does not return a value if 'output' is "T". 'sl' returns a numeric vector of boudaries for the contiguous segments of the confidence interval if 'output' is "V" or "B".
Examples
# Data for Patient B from Smith and Cook (1980)
y <- c(37.3, 47.1, 51.5, 67.6, 75.9, 73.3, 69.4, 61.5, 31.8, 19.4)
x <- 1:10
sc <- lm.br( y ~ x )
sc$ci()
sc $ ci( 0.90 )
sc $ ci( .99, 'af' )
sc $ ci( out= 'v' )
[Package lm.br version 2.9.7 Index]