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To provide a more consistent interface, igraph functions that have a dot case name, like add.edges(), will be deprecated in favor of functions with a snake case name, like add_edges().

Currently, for each function both alternatives work, but we’ll incrementally remove the dot case functions, first emitting deprecation messages when they are used, then in a further version warnings, until they actually result in an error.

Therefore, we’d like to ask you to update your codebases, be they packages or scripts. Thank you for your cooperation! Direct any question to us in the igraph issue tracker.

Old name New name
add.edges igraph::add_edges
add.vertex.shape igraph::add_shape
add.vertices igraph::add_vertices
adjacent.triangles igraph::count_triangles
articulation.points igraph::articulation_points
aging.prefatt.game igraph::sample_pa_age
aging.ba.game igraph::sample_pa_age
aging.barabasi.game igraph::sample_pa_age
alpha.centrality igraph::alpha_centrality
are.connected igraph::are_adjacent
assortativity.degree igraph::assortativity_degree
assortativity.nominal igraph::assortativity_nominal
asymmetric.preference.game igraph::sample_asym_pref
authority.score igraph::authority_score
automorphisms igraph::count_automorphisms
autocurve.edges igraph::curve_multiple
average.path.length igraph::mean_distance
ba.game igraph::sample_pa
barabasi.game igraph::sample_pa
biconnected.components igraph::biconnected_components
bipartite.mapping igraph::bipartite_mapping
bipartite.projection igraph::bipartite_projection
bipartite.projection.size igraph::bipartite_projection_size
bipartite.random.game igraph::sample_bipartite
blockGraphs igraph::graphs_from_cohesive_blocks
bonpow igraph::power_centrality
callaway.traits.game igraph::sample_traits_callaway
canonical.permutation igraph::canonical_permutation
centralization.betweenness igraph::centr_betw
centralization.betweenness.tmax igraph::centr_betw_tmax
centralization.closeness igraph::centr_clo
centralization.closeness.tmax igraph::centr_clo_tmax
centralization.degree igraph::centr_degree
centralization.degree.tmax igraph::centr_degree_tmax
centralization.evcent igraph::centr_eigen
centralization.evcent.tmax igraph::centr_eigen_tmax
centralize.scores igraph::centralize
cited.type.game igraph::sample_cit_types
citing.cited.type.game igraph::sample_cit_cit_types
clique.number igraph::clique_num
cluster.distribution igraph::component_distribution
clusters igraph::components
code.length igraph::code_len
cohesive.blocks igraph::cohesive_blocks
connect.neighborhood igraph::connect
contract.vertices igraph::contract
convex.hull igraph::convex_hull
count.multiple igraph::count_multiple
cutat igraph::cut_at
decompose.graph igraph::decompose
degree.distribution igraph::degree_distribution
degree.sequence.game igraph::sample_degseq
delete.edges igraph::delete_edges
delete.vertices igraph::delete_vertices
dendPlot igraph::plot_dendrogram
dominator.tree igraph::dominator_tree
dyad.census igraph::dyad_census
edge.betweenness igraph::edge_betweenness
edge.betweenness.community igraph::cluster_edge_betweenness
edge.connectivity igraph::edge_connectivity
edge.disjoint.paths igraph::edge_connectivity
establishment.game igraph::sample_traits
evcent igraph::eigen_centrality
farthest.nodes igraph::farthest_vertices
fastgreedy.community igraph::cluster_fast_greedy
forest.fire.game igraph::sample_forestfire
get.adjedgelist igraph::as_adj_edge_list
get.adjlist igraph::as_adj_list
get.adjacency igraph::as_adjacency_matrix
get.data.frame igraph::as_data_frame
get.edge.attribute igraph::edge_attr
get.edgelist igraph::as_edgelist
get.graph.attribute igraph::graph_attr
get.incidence igraph::as_biadjacency_matrix
get.stochastic igraph::stochastic_matrix
get.vertex.attribute igraph::vertex_attr
graph.adhesion igraph::adhesion
graph.adjacency igraph::graph_from_adjacency_matrix
graph.adjlist igraph::graph_from_adj_list
graph.atlas igraph::graph_from_atlas
graph.automorphisms igraph::count_automorphisms
graph.bfs igraph::bfs
graph.bipartite igraph::make_bipartite_graph
graph.cohesion igraph::cohesion
graph.complementer igraph::complementer
graph.compose igraph::compose
graph.coreness igraph::coreness
graph.data.frame igraph::graph_from_data_frame
graph.de.bruijn igraph::make_de_bruijn_graph
graph.density igraph::edge_density
graph.disjoint.union igraph::disjoint_union
graph.dfs igraph::dfs
graph.difference igraph::difference
graph.diversity igraph::diversity
graph.edgelist igraph::graph_from_edgelist
graph.eigen igraph::spectrum
graph.empty igraph::make_empty_graph
graph.extended.chordal.ring igraph::make_chordal_ring
graph.formula igraph::graph_from_literal
graph.full igraph::make_full_graph
graph.full.bipartite igraph::make_full_bipartite_graph
graph.full.citation igraph::make_full_citation_graph
graph.graphdb igraph::graph_from_graphdb
graph.incidence igraph::graph_from_biadjacency_matrix
graph.isocreate igraph::graph_from_isomorphism_class
graph.kautz igraph::make_kautz_graph
graph.knn igraph::knn
graph.laplacian igraph::laplacian_matrix
graph.lattice igraph::make_lattice
graph.lcf igraph::graph_from_lcf
graph.maxflow igraph::max_flow
graph.mincut igraph::min_cut
graph.motifs igraph::motifs
graph.motifs.est igraph::sample_motifs
graph.motifs.no igraph::count_motifs
graph.neighborhood igraph::make_ego_graph
graph.star igraph::make_star
graph.strength igraph::strength
graph.tree igraph::make_tree
graph.union igraph::union.igraph
graph.ring igraph::make_ring
graphlets.candidate.basis igraph::graphlet_basis
graphlets.project igraph::graphlet_proj
growing.random.game igraph::sample_growing
grg.game igraph::sample_grg
has.multiple igraph::any_multiple
hrg.consensus igraph::consensus_tree
hrg.create igraph::hrg
hrg.dendrogram igraph::hrg_tree
hrg.game igraph::sample_hrg
hrg.fit igraph::fit_hrg
hrg.predict igraph::predict_edges
hub.score igraph::hub_score
igraph.console igraph::console
igraph.sample igraph::sample_seq
igraph.version igraph::igraph_version
igraphdemo igraph::igraph_demo
igraphtest igraph::igraph_test
independence.number igraph::ivs_size
independent.vertex.sets igraph::ivs
infomap.community igraph::cluster_infomap
induced.subgraph igraph::induced_subgraph
interconnected.islands.game igraph::sample_islands
is.bipartite igraph::is_bipartite
is.chordal igraph::is_chordal
is.connected igraph::is_connected
is.dag igraph::is_dag
is.degree.sequence igraph::is_degseq
is.directed igraph::is_directed
is.graphical.degree.sequence igraph::is_graphical
is.hierarchical igraph::is_hierarchical
is.igraph igraph::is_igraph
is.loop igraph::which_loop
is.matching igraph::is_matching
is.maximal.matching igraph::is_max_matching
is.minimal.separator igraph::is_min_separator
is.multiple igraph::which_multiple
is.mutual igraph::which_mutual
is.named igraph::is_named
is.separator igraph::is_separator
is.simple igraph::is_simple
is.weighted igraph::is_weighted
k.regular.game igraph::sample_k_regular
label.propagation.community igraph::cluster_label_prop
largest.cliques igraph::largest_cliques
largest.independent.vertex.sets igraph::largest_ivs
lastcit.game igraph::sample_last_cit
layout.auto igraph::layout_nicely
layout.bipartite igraph::layout_as_bipartite
layout.davidson.harel igraph::layout_with_dh
layout.drl igraph::layout_with_drl
layout.gem igraph::layout_with_gem
layout.graphopt igraph::layout_with_graphopt
layout.grid igraph::layout_on_grid
layout.mds igraph::layout_with_mds
layout.merge igraph::merge_coords
layout.norm igraph::norm_coords
layout.star igraph::layout_as_star
layout.sugiyama igraph::layout_with_sugiyama
leading.eigenvector.community igraph::cluster_leading_eigen
line.graph igraph::make_line_graph
list.edge.attributes igraph::edge_attr_names
list.graph.attributes igraph::graph_attr_names
list.vertex.attributes igraph::vertex_attr_names
maxcohesion igraph::max_cohesion
maximal.cliques igraph::max_cliques
maximal.cliques.count igraph::count_max_cliques
maximal.independent.vertex.sets igraph::maximal_ivs
minimal.st.separators igraph::min_st_separators
maximum.bipartite.matching igraph::max_bipartite_match
maximum.cardinality.search igraph::max_cardinality
minimum.size.separators igraph::min_separators
minimum.spanning.tree igraph::mst
mod.matrix igraph::modularity_matrix
multilevel.community igraph::cluster_louvain
neighborhood.size igraph::ego_size
no.clusters igraph::count_components
optimal.community igraph::cluster_optimal
page.rank igraph::page_rank
path.length.hist igraph::distance_table
permute.vertices igraph::permute
piecewise.layout igraph::layout_components
plotHierarchy igraph::plot_hierarchy
power.law.fit igraph::fit_power_law
preference.game igraph::sample_pref
read.graph igraph::read_graph
remove.edge.attribute igraph::delete_edge_attr
remove.graph.attribute igraph::delete_graph_attr
remove.vertex.attribute igraph::delete_vertex_attr
running.mean igraph::running_mean
sbm.game igraph::sample_sbm
set.edge.attribute igraph::set_edge_attr
set.graph.attribute igraph::set_graph_attr
set.vertex.attribute igraph::set_vertex_attr
shortest.paths igraph::distances
showtrace igraph::show_trace
spinglass.community igraph::cluster_spinglass
stCuts igraph::st_cuts
stMincuts igraph::st_min_cuts
static.fitness.game igraph::sample_fitness
static.power.law.game igraph::sample_fitness_pl
subgraph.centrality igraph::subgraph_centrality
tkplot.canvas igraph::tk_canvas
tkplot.center igraph::tk_center
tkplot.close igraph::tk_close
tkplot.export.postscript igraph::tk_postscript
tkplot.fit.to.screen igraph::tk_fit
tkplot.getcoords igraph::tk_coords
tkplot.off igraph::tk_off
tkplot.reshape igraph::tk_reshape
tkplot.rotate igraph::tk_rotate
tkplot.setcoords igraph::tk_set_coords
topological.sort igraph::topo_sort
triad.census igraph::triad_census
unfold.tree igraph::unfold_tree
vertex.connectivity igraph::vertex_connectivity
vertex.disjoint.paths igraph::vertex_disjoint_paths
walktrap.community igraph::cluster_walktrap
watts.strogatz.game igraph::sample_smallworld
write.graph igraph::write_graph
graph.famous igraph::make_graph
igraph.from.graphNEL igraph::graph_from_graphnel
igraph.to.graphNEL igraph::as_graphnel
getIgraphOpt igraph::igraph_opt
igraph.options igraph::igraph_options
graph.intersection igraph::intersection
exportPajek igraph::export_pajek
get.diameter igraph::get_diameter
get.all.shortest.paths igraph::all_shortest_paths
get.shortest.paths igraph::shortest_paths
graph igraph::make_graph
vertex.shapes igraph::shapes
igraph.shape.noclip igraph::shape_noclip
igraph.shape.noplot igraph::shape_noplot
create.communities igraph::make_clusters