simulate.transectHolder: Function to simulate a modelled seed rain from a...

In spuRs: Functions and Datasets for "Introduction to Scientific Programming and Simulation Using R"

Description

This function simulates a two-dimensional seed rain according to the model stored in a transectHolder object. The angle of the seed location from the parent plant is uniformly distributed on [0, 2 pi).

Usage

## S3 method for class transectHolder 
## S3 method for class 'transectHolder'
simulate(object, nsim=1, seed=NULL, ...)

Arguments

object	the transectHolder object for simulation
nsim	the number of seeds to simulate.
seed	if not NULL, set the seed to this value before simulation.
...	additional optional arguments (ignored here).

Value

A dataframe with n rows with the following components:

distances	seed distances to parent plant
angles	seed angles to parent plant, in radians
x	x-location of seed
y	y-location of seed

References

Jones, O.D., R. Maillardet, and A.P. Robinson. 2009. An Introduction to Scientific Programming and Simulation, Using R. Chapman And Hall/CRC.

See Also

transectHolder

Examples

transect.1 <- trapTransect(distances = 1:4,
                        seed.counts = c(4, 3, 2, 0))
transect.2 <- trapTransect(distances = 1:3,
                        seed.counts = c(3, 2, 1))
transect.3 <- trapTransect(distances=(1:5)/2,
                        seed.counts = c(3, 4, 2, 3, 1))
allTraps <- transectHolder(transect.1, transect.2, transect.3,
                           family="Weibull")
allTraps
simulate(allTraps, nsim=5, seed=123)

spuRs documentation built on May 2, 2019, 12:44 p.m.