gravity: A function to calculate the matrix of gravity coupling based...
In epimdr2: Functions and Data for "Epidemics: Models and Data in R (2nd Edition)"
gravity R Documentation
A function to calculate the matrix of gravity coupling based on distance and population size
Description
A function to calculate the matrix of gravity coupling based on distance and population size
Usage
gravity(tau1, tau2, rho, pop, distance)
Arguments
tau1
recipient exponent
tau2
donor exponent
rho
distance exponent
pop
a vector of population sizes
distance
a matrix of distances
Value
A matrix of gravity coupling
See Also
sirSpatmod
Examples
require(ncf)
data(usflu)
usdist = gcdist(usflu$Longitude, usflu$Latitude)
G = gravity(0.3, 0.6, 3, usflu$Pop, usdist)
epimdr2 documentation built on Dec. 28, 2022, 2:23 a.m.
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| gravity | R Documentation |
A function to calculate the matrix of gravity coupling based on distance and population size
Description
A function to calculate the matrix of gravity coupling based on distance and population size
Usage
gravity(tau1, tau2, rho, pop, distance)
Arguments
tau1 |
recipient exponent |
tau2 |
donor exponent |
rho |
distance exponent |
pop |
a vector of population sizes |
distance |
a matrix of distances |
Value
A matrix of gravity coupling
See Also
sirSpatmod
Examples
require(ncf) data(usflu) usdist = gcdist(usflu$Longitude, usflu$Latitude) G = gravity(0.3, 0.6, 3, usflu$Pop, usdist)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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