net.qmodel {stream.net}R Documentation

Generate Stochastic Stream Network Object

Description

Generate a stochastic network according to the Q model (see references).

Usage

  net.qmodel (size=100, Q=0.5)

Arguments

size magnitude of the network in number of terminal branches.
Q probability of an internal branch rather than a terminal branch (0 <= Q <= 1).

Details

Any value of Q will generate all possible topologies of the given size, however, the likelihood of any topology is controlled by the value provided. If Q = 0.01, then networks with short lengths to terminal branches are more likely (because branching from existing terminal branches is much more probable than from existing internal branches). If Q = 0.99, then networks with a few long sequences of branches are more likely.

Value

A net.object.

Author(s)

Denis White, white.denis@epa.gov

References

Costa-Cabral MC, Burges SJ. 1997. Sensitivity of channel network planform laws and the question of topologic randomness. Water Resources Research 33(9):2179-2197.

See Also

net.object

Examples

  net <- net.qmodel (10, Q=0.99)
  net.map (net)

[Package stream.net version 1.0.6 Index]