loadDispersalPathogen {landsepi} | R Documentation |
Load pathogen dispersal matrices
Description
It loads one of the five built-in vectorised dispersal matrices of rust fungi associated with the five built-in landscapes. Landscape and DispersalPathogen ID must be the same. And set a vectorized identity matrix for sexual reproduction dispersal.
Usage
loadDispersalPathogen(id = 1)
Arguments
id |
a matrix ID between 1 to 5 (must match the ID of the landscape loaded with
|
Details
landsepi includes built-in dispersal matrices to represent rust dispersal in the
five built-in landscapes. These have been computed from a power-law dispersal kernel:
g(d) = ((b-2)*(b-1) / (2*pi*a^2)) * (1 + d/a)^{-b}
with a=40 the scale parameter and b=7 a parameter related to the width of the dispersal kernel.
The expected mean dispersal distance is given by 2*a /(b-3) = 20 m
.
Value
a vectorised dispersal matrix representing the dispersal of clonal propagules, and a vectorised dispersal identity matrix for sexual propagules. All by columns.
See Also
Examples
d <- loadDispersalPathogen(1)
d