briskaR (version 0.1.2)

create.pollen.sources: Pollen sources emission simulation

Description

Simulate pollen sources emission for maize crop. The proportion of plants emitting pollen per day (during 12 days) was observed by Fr<U+00E9>d<U+00E9>rique Angevin (Angevin et al. 2008).

Usage

create.pollen.sources(nbOfSource=200, numberOfDay=60,
density=runif(1,7,11), pollen=rgamma(1,shape=1.6,scale=1/(2*10^-7)))

Arguments

nbOfSource

Number of source fields

numberOfDay

Number of time units (e.g. days) including the pollen emission (for simulation, default is time.max). Minimal value is 12 days.

density

Plant density (number of plant by squared meter)

pollen

Pollen production (number of grains by plant)

Value

A matrix indexed by sources ID (in rows) and by time ( in columns) whose rows give the values of pollen emission (number of grains) for every source.

Examples

# NOT RUN {
# simulation of an emission matrix for 20 emitting sources and a emission period of 15 days:
create.pollen.sources(nbOfSource=20,numberOfDay=15)
# simulation of an emission matrix for 1 emitting source and a emission period of 20 days:
pollen.emission<-create.pollen.sources(nbOfSource=1,numberOfDay=20)
plot(pollen.emission[1,],xlab="time unites",ylab="maize crop emission")
# }