BacArena (version 1.8.2)

chemotaxis: Function for chemotaxis of bacteria to their prefered substrate

Description

The generic function chemotaxis implements a bacterial movement in the Moore neighbourhood to the highest substrate concentration.

Usage

chemotaxis(object, population, j, chemo, occupyM)
# S4 method for Bac
chemotaxis(object, population, j, chemo, occupyM)

Arguments

object

An object of class Bac.

population

An object of class Arena.

j

The number of the iteration of interest.

chemo

The vector that contains the prefered substrate.

occupyM

A matrix indicating grid cells that are obstacles

Details

Bacteria move to a position in the Moore neighbourhood which has the highest concentration of the prefered substrate, which is not occupied by other individuals. The prefered substance is given by slot chem in the Bac object. If there is no free space the individuals stays in the same position. If the concentration in the Moore neighbourhood has the same concentration in every position, then random movement is implemented.

See Also

Bac-class and emptyHood

Examples

# NOT RUN {
data(Ec_core, envir = environment()) #get Escherichia coli core metabolic model
bac <- Bac(Ec_core,deathrate=0.05, chem = "EX_o2(e)",
           minweight=0.05,growtype="exponential") #initialize a bacterium
arena <- Arena(n=20,m=20) #initialize the environment
arena <- addOrg(arena,bac,amount=10) #add 10 organisms
arena <- addSubs(arena,40) #add all possible substances
chemotaxis(bac,arena,1, "EX_glc(e)", arena@occupyM)
# }