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det.tables

Observation detection tables


Description

Creates a series of tables for dual observer data that shows the number missed and detected for each observer within defined distance classes.

Usage

det.tables(model, nc = NULL, breaks = NULL)

Arguments

model

fitted model from ddf

nc

number of equal-width bins for histogram

breaks

user define breakpoints

Value

list object of class "det.tables"

Observer1

table for observer 1

Observer2

table for observer 2

Duplicates

histogram counts for duplicates

Pooled

histogram counts for all observations by either observer

Obs1_2

table for observer 1 within subset seen by observer 2

Obs2_1

table for observer 2 within subset seen by observer 1

Author(s)

Jeff Laake

Examples

data(book.tee.data)
region<<-book.tee.data$book.tee.region
egdata<<-book.tee.data$book.tee.dataframe
samples<<-book.tee.data$book.tee.samples
obs<<-book.tee.data$book.tee.obs
xx=ddf(mrmodel=~glm(formula=~distance*observer),
 dsmodel = ~mcds(key = "hn", formula = ~sex), data = egdata, method = "io",
meta.data = list(width = 4))
tabs=det.tables(xx,breaks=c(0,.5,1,2,3,4))
par(mfrow=c(2,2))
plot(tabs,new=FALSE,which=c(1,2,5,6))

mrds

Mark-Recapture Distance Sampling

v2.2.4
GPL (>= 2)
Authors
Jeff Laake <jeff.laake@noaa.gov>, David Borchers <dlb@st-and.ac.uk>, Len Thomas <len.thomas@st-and.ac.uk>, David Miller <dave@ninepointeightone.net> and Jon Bishop
Initial release

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