Rik's Treehouse > Babbling in Binary > My Software > Orphanware > R2DToo > R2DToo Help > For the Programmer > nbrhdRandomER

nbrhdRandomER

Declaration
Parameters
Remarks
Example
See Also

Declaration

void __stdcall nbrhdRandomER(
	float linksPerNode, // average number of neighbours for each site
	bool symmetric      // whether links are symmetric or not
);

Parameters

linksPerNode: Number of links (neighbours) each site has, an average.
symmetric: true if links are symmetric (reciprocal), otherwise false.

Remarks

This function is available through the API. It can be called within the model-supplied routine setNbrhd to set the neighbourhood to an Erdos-Renyi random graph in which each agent is randomly connected to other agents (never itself) selected from anywhere on the lattice (non-local). The probability of a link between any two agents is linksPerNode/(N-1) where N is the number of agents in the simulation.

If symmetric=true then all links are reciprocal: a is a neighbour of b if and only if b is a neighbour of a. Otherwise the links are directed.

Example

void __stdcall setNbrhd(double *param) { nbrhdRandomER(1.5,true); }