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ptdata.dual

Simulated dual observer point count data


Description

Simulated dual observer point count data with detection p(0)=0.8; hn sigma=30; w=100 for both observers with dependency y>0, gamma=0.1

Format

The format is 420 obs of 6 variables: distance: numeric distance from center observer: Factor w/ 2 levels "1","2": 1 2 1 2 1 2 1 2 1 2 ... detected: numeric 0/1 person: Factor with 2 levels A,B pair: Factor with 2 levels "AB" BA" $ object : sequential object number

Examples

data(ptdata.dual)
xx <- ddf(mrmodel=~glm(formula=~distance),
          dsmodel = ~cds(key="hn", formula = ~1),
          data = ptdata.dual, method = "io", meta.data = list(point=TRUE))
summary(xx)
plot(xx,main="Simulated point count data")

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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