igraph_options

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Parameters for the igraph package

igraph has some parameters which (usually) affect the behavior of many functions. These can be set for the whole session via igraph_options.

Keywords
graphs
Usage
igraph_options(...)

igraph_opt(x, default = NULL)

Arguments
x
A character string holding an option name.
default
If the specified option is not set in the options list, this value is returned. This facilitates retrieving an option and checking whether it is set and setting it separately if not.
...
A list may be given as the only argument, or any number of arguments may be in the name=value form, or no argument at all may be given. See the Value and Details sections for explanation.
Details

The parameter values set via a call to the igraph_options function will remain in effect for the rest of the session, affecting the subsequent behaviour of the other functions of the igraph package for which the given parameters are relevant.

This offers the possibility of customizing the functioning of the igraph package, for instance by insertions of appropriate calls to igraph_options in a load hook for package igraph.

The currently used parameters in alphabetical order: [object Object],[object Object],[object Object],[object Object],. Possible values are auto (the default), phylo, hclust and dendrogram. See plot_dendrogram for details.,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Value

  • igraph_options returns a list with the updated values of the parameters. If the argument list is not empty, the returned list is invisible.

    For igraph_opt, the current value set for option x, or NULL if the option is unset.

See Also

igraph_options is similar to options and igraph_opt is similar to getOption.

Aliases
  • getIgraphOpt
  • igraph.options
  • igraph_opt
  • igraph_options
Examples
oldval <- igraph_opt("verbose")
igraph_options(verbose=TRUE)
layout_with_kk(make_ring(10))
igraph_options(verbose=oldval)
#'
Documentation reproduced from package igraph, version 1.0.0, License: GPL (>= 2)

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