captureci {SDAResources}

Capture-recapture confidence interval function

Description

Compute a confidence interval for a capture-recapture sample using the method of Cormack (1992).

Usage

captureci(xmat, y, alpha)

Arguments

xmat

Define 1 = in sample and 0 = not in sample. For example, if there are two samples, xmat has two columns; the row (1,0) represents the category of being in sample 1 but not in sample 2.

y

Number of units corresponding to xmat.

alpha

Confidence level with a default value of 0.05.

Value

cell: estimated cell value for the missing count of category (0, 0)

N: the estimated total counts

CI_cell: the estimated confidence interval for the missing category count

CI_N: the estimated confidence interval for total counts

Examples

xmat <- cbind(c(1,1,0),c(1,0,1))
y <- c(20,180,80)
captureci(xmat, y, alpha = 0.1)