manip_levels function

Modifying network levels

These functions reformat the levels in manynet-consistent network data.

• to_onemode() reformats two-mode network data into one-mode network data by simply removing the nodeset 'type' information. Note that this is not the same as to_mode1() or to_mode2().
• to_twomode() reformats one-mode network data into two-mode network data, using a mark to distinguish the two sets of nodes.
• to_multilevel() reformats two-mode network data into multimodal network data, which allows for more levels and ties within modes.

If the format condition is not met, for example to_onemode() is used on a network that is already one-mode, the network data is returned unaltered. No warning is given so that these functions can be used to ensure conformance.

Unlike the as_*() group of functions, these functions always return the same class as they are given, only transforming these objects' properties.

to_onemode(.data)

to_twomode(.data, mark)

to_multilevel(.data)

Arguments

• .data: An object of a manynet-consistent class:

  • matrix (adjacency or incidence) from {base} R
  • edgelist, a data frame from {base} R or tibble from {tibble}
  • igraph, from the {igraph} package
  • network, from the {network} package
  • tbl_graph, from the {tidygraph} package

• mark: A logical vector marking two types or modes. By default "type".

Returns

All to_ functions return an object of the same class as that provided. So passing it an igraph object will return an igraph object and passing it a network object will return a network object, with certain modifications as outlined for each function.

Details

Not all functions have methods available for all object classes. Below are the currently implemented S3 methods:

	igraph	matrix	network	tbl_graph
to_multilevel	1	1	0	1
to_onemode	1	1	0	1
to_twomode	1	0	1	1

See Also

Other modifications: manip_as, manip_correlation, manip_deformat, manip_from, manip_miss, manip_nodes, manip_paths, manip_permutation, manip_preformat, manip_project, manip_reformat, manip_scope, manip_split, manip_ties