About igraph releases and other things
In an attempt to bring the R interface of igraph closer to the recent developments of the C core, we have released R-igraph 1.2.7, the seventh bugfix release of the 1.2 series. This version updates the C core of igraph within the R interface to version 0.8.5, which, while still several versions behind the mainline C core, fixes a range of bugs compared to the previous release and introduces a few new functions.
This release is only the beginning; in the next few months we aim to process most of the issues on the Github issue tracker, close the ones that are not relevant any more, fix the ones that should be fixed, and then proceed with updating the R interface to version 0.9.4 of the C core, which is the most recent C core version at the time of writing.
cluster_leiden() added as an interface to the Leiden community detection
algorithm in the C core of igraph
cluster_fluid_communities() added as an interface to the fluid communities
algorithm of the C core of igraph
make_lattice() correctly rounds
length to the nearest integer while
printing a warning (#115.
make_empty_graph(NULL) now prints an error instead of producing an
invalid graph (#404).
make_graph(c()) now produces an empty graph instead of printing a
misleading error message (#431).
types argument of functions related to bipartite graphs now prints
a warning when the types are coerced to booleans
layout_with_sugiyama() returns a layout of type matrix even if there is
only one vertex in the graph (#408).
membership argument of
modularity.matrix() is now deprecated as the
function never needed it anyway.
modularity() now prints a warning when it is applied on a directed graph
because the implementation in igraph’s C core does not support directed
graphs as of version 0.8.5. The warning will be turned into an error in
the next minor (1.3.0) version of the R interface; the error will be removed
later when the C core is updated to a version that supports modularity for
transitivity() now prints a warning when its local variant (
is called on a directed graph or a graph with multiple edges beecause the
implementation in the C core of igraph does not work reliably in these cases
as of version 0.8.5. The warning will be turned into an error in the next
minor (1.3.0) version of the R interface; the error will be removed later
when the C core is updated to a version that supports transitivity for
networks with multiple edges.