generate.design.dp: Survey Design of Double Platform Method

In dill/wisp: Wildlife Simulation Package (wisp)

Description

This function uses the data stored in the 'pars.design.dp´ object to create a new design object

Usage

        generate.design.dp(pars.des, seed = NULL)

Arguments

pars.des	An parameter object returned by the function setpars.design.dp
seed	the number passed to set.seed() to initialise random number generator

Details

A survey design of the double platform method is generated as design object. generate.design.dp works with the object 'pars.design.dp´ that was generated by the function setpars.design.dp. setpars.design.dp has to be run prior.

Value

generate.design.dp returns an object of class 'design.dp´ which has the following elements:

region	object of class 'region´
n.transects	number of transect paths
effective.n.transects	the effective number of transect paths
n.units	number of survey units
pos.x	vector of x-positions of the survey units
start.y	vector of starting y-positions of the survey units
end.y	vector of ending y-positions of the survey units
visual.range	visibility of both observers
percentage.on.effort	percentage of the transect lines that is searched
parents	Details of WiSP objects passed to function
created	Creation date and time
seed	Equal to the argument 'seed' passed to the function

See Also

setpars.design.dp, plot.design.dp

Examples

dp.reg <- generate.region(x.length = 100, y.width = 50)
dp.dens <- generate.density(dp.reg)

#heterogeneous population
dp.poppars<-setpars.population(density.pop = dp.dens, number.groups = 1000, size.method = "poisson",
                              size.min = 1, size.max = 30, size.mean = 10, exposure.method = "beta",
                              exposure.min = 0, exposure.max = 1, exposure.mean = 0.4,
                              exposure.shape = 0.5,type.values=c("Male","Female"), type.prob=c(0.48,0.52))
dp.pop<-generate.population(dp.poppars)

dp.despars<-setpars.design.dp(dp.reg, n.transects=10, n.units=10, visual.range=2, percent.on.effort=1)
dp.des<-generate.design.dp(dp.despars, seed=3)
summary(dp.des)

dill/wisp documentation built on May 15, 2019, 8:31 a.m.