generate.sample.pl: Survey Sample of Plot Method

In DistanceDevelopment/WiSP: Wildlife Simulation Package (wisp)

Description

This function uses the data stored in the 'pars.survey.pl´ object to create a plot sampling sample object.

Usage

        generate.sample.pl(pop, des, seed = NULL)

Arguments

pop	object of class 'population´, returned by the function generate.population
des	object of class 'design.pl´ returned by the function generate.design.pl
seed	number passed to set.seed() to initialise random number generator

Details

A plot sampling method sample object is generated by simulating a plot sampling survey of the population ‘pop’, using the design specified in ‘des’.

Value

generate.sample.pl returns an object of class 'sample.pl´ which has the following elements:

population	object of class 'population´.
design	object of class 'design.pl´.
detected	vector indicating which animal groups have been detected. 0 indicates that an animal group has not been detected, 1 means that an animal group has been detected.
unit	vector indicating survey units (plots) in which each animal groups was detected.
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

generate.design.pl, summary.sample.pl plot.sample.pl, set.seed

Examples

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

pl.poppars<-setpars.population(density.pop=pl.dens, number.groups = 100, size.method = "poisson",
                               size.min = 1, size.max = 5, size.mean = 1, exposure.method = "beta",
                               exposure.min = 2, exposure.max = 10, exposure.mean = 6,
                               exposure.shape = 1)
pl.pop <- generate.population(pl.poppars, seed=456)

pl.despars<-setpars.design.pl(pl.reg, n.interval.x = 10, n.interval.y = 20,
                              method = "random",  area.covered = 0.2)
pl.des <- generate.design.pl(pl.despars, seed=789)

pl.samp<-generate.sample.pl(pl.pop, pl.des, seed=101112)
summary(pl.samp)
plot(pl.samp)

DistanceDevelopment/WiSP documentation built on Sept. 18, 2020, 2:55 p.m.