Description Usage Arguments Value Note
Function for adding weight(s) to edges. The following functions
are implemented and may be passed as argument generator
to addWeights
:
addWeightsRandom
Add purely random weights. Calls the passed method
, e.g., method = runif
to generate weights.
addWeightsDistance
Weights correspond to a distance metric based on the node coordinates
in the Euclidean plane. Internally function dist
is called.
addWeightsCorrelated
This method generates two weight matrices with correlated weights. The
correlation may be adjusted by the rho
argument. Here, the first weight of an
edge is the Euclidean distance between the nodes in the plane and the second one
is generated in a way, that the correlation is close to rho
.
addWeightsCocave
This method is interesting for generating bi-objective graphs to benchmark algorithms for the multi-criteria spanning tree problem. Graphs generated this way expose a concave Pareto-front.
1 2 3 4 5 6 7 | addWeightsConcave(graph, xhi = 10, nu = 20, M = 100, ...)
addWeightsCorrelated(graph, rho, ...)
addWeightsDistance(graph, method, ...)
addWeightsRandom(graph, method, ...)
|
graph |
[ |
xhi |
[ |
nu |
[ |
M |
[ |
... |
[any] Further arguments. Not used at the moment. This may be useful for user-written weight generators. |
rho |
[ |
method |
[ |
[list
] A list with components
list
]List of weight matrices. Even in the case of one weight matrix it is wrapped in a list of length one.
character(1)
]String description of the generator used.
These functions are not meant to be called directly. Instead, they need
to be assigned to the generator
argument of addWeights
.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.