CHANGELOG:
v2.8
New Features:
rgbn now supports exogenous inhibition events, and can start with
a user-specified seed graph; new "density guard" feature allows
early termination at a target density (useful for ABC applications)
Changes:
C-level changes made for CRAN compliance
v2.7-2
Bug Fixes:
Corrected a formatting issue that was generating a compile warning.
v2.7-1
Changes:
gplot3d has been modified to comply with upcoming rgl changes [thanks
to Duncan Murdoch for the heads-up]; this shouldn't change much at
the user level, but some things may render slightly differently.
Bug Fixes:
Corrected documentation features that were not CRAN compliant
v2.7
Changes:
rgnm should now be much, much faster on large sparse graphs
The default ncell value for the Fruchterman-Reingold layout has been
changed from N^0.4 to N^0.5; this produces nicer layouts, though it
does add to the computational cost. If your layout is taking too
long, consider setting ncell accordingly using the layout.par
argument to gplot. If you are seeing random outlying vertices,
or other anomalies, try increasing ncell further.
Bug Fixes:
rgnm was not handling loops properly [submitted by Gilad Ravid]
logSum returned NaN when called w/two leading -Inf values [submitted
by Fan Yin]
Changed man page code for CRAN compliance
v2.6
New Functions:
simmelian - Compute Simmelian ties from an input digraph
Bug Fixes and New Functions:
gtrans produced warnings (and occasionally failed) with network
objects or lists thereof when use.adjacency=TRUE was set
redist was failing when called with a non-trivial seed partition
qaptest did not coerce inputs to sociomatrices when calculating the
observed value of the test statistic, but then passed to rmperm which
did so for replications; this was usually harmless, but could in some
cases lead to problems for some input types and some statistics. New
behavior is to always coerce to matrix form.
gplot.target produced spurious warning messages
v2.5
New Features:
plot.sociomatrix now allows an arbitrary cell color function to be
supplied, and supports more label options
Bug Fixes:
Documentation for brokerage had "representative" and "gatekeeper" names
swapped; note that this did not affect the function itself [submitted
by Ho Young Yoon]
Annoying tracer messages have been removed from the component finding
algorithm. (This was not originally seen as a bug, but became
sufficiently aggravating to be viewed as one.)
rgnmix was not returning edgelists when asked to do so in some cases
Changes:
Class processing was modified to comply with upcoming R changes
Explcit registration now used for C-level functions, per CRAN dictum
v2.4
New Functions:
component.size.byvertex - Compute component sizes by vertex
gilschmidt - Compute the Gil-Schmidt power centrality index
New Features:
netlogit now supports use of the z-statistic for QAP and CUG tests
closeness now computes the normalized Gil-Schmidt index. (This was
previously advertised, but not actually supported.)
component.largest now allows subgraphs to be returned in edgelist form
is.isolate now processes more than one graph a time, if desired
reachability now supports edgelist output (this is usually recommended)
and removal of missing edges
Various component.* functions are now more efficient for large graphs
for many types of connectivity
Efficiency gains for isolates, is.isolate, reachability, and some other
functions on large, sparse, graphs
geodist now supports an na.omit option
rgbn now supports satiation and truncated sibling effects
Bug Fixes:
kcycle.census and kpath.census were not propagating maxlen arguments when
called with lists of graphs
clique.census was producing a segfault when called with a matrix
containing NAs
event2dichot didn't preserve row/column names [reported by Katherina
Bohlecarbonell]
geodist could produce a segfault when called with unignored negative
edge values (which was documented to be verboten, but was not
internally checked); an error message is now returned [submitted by
Skye Bender-deMoll]
Various fixes in bbnam, including: bbnam could fail when the number of
informants did not equal the number of nodes; errors could occur with
undirected models; and the code also now automatically overrides the
potential scale reduction measure argument when reps==1 (since this
cannot be computed with only one chain)
prestige did not handle the nodes argument correctly for some measures
[submitted by Skye Bender-deMoll]
netlogit and netlm had a bug leading CUG tests to fail in some cases
[submitted by Christian Steglich)
gtrans with measure=="rank" yielded incorrect results in some cases
[submitted by Chris Marcum]
as.edgelist.sna now accepts objects with multiple classes, which fixes
some errors with use in complex settings [submitted by Skye
Bender-deMoll]
closeness provided an incorrect tmaxdev for mode suminvundir [submitted
by John Skvoretz]
structdist could give incorrect results with gmode=="graph" [submitted
by John Skvoretz]
Changes:
Various NAMESPACE changes made, to comply with the ever-changing world
of CRAN [contributed by Skye Bender-deMoll]
sna now Depends on network and statnet.common, resolving the %c% operator conflict
[suggested by Skye Bender-deMoll]
netlogit now uses the z statistic by default for Monte Carlo tests
(formerly, the coefficient was used)
v2.3-2
Bug Fixes:
Documentation for brokerage had Representative and Gatekeeper roles
reversed. (Actual program output was correctly labeled.) [submitted
by Lorien Jasny and others]
gplot gave a harmless but annoying warning when invoked in R>3.0
[submitted by Gen Kobayashi]
Changes:
Per request from CRAN, the non-standard CONTRIBUTORS file has been
removed. Major contributors are cited on the respective man pages,
and minor contributors (e.g., of bug fixes) in this ChangeLog. If
there is strong interest in bringing the file back (I had no desire
to pull it!), please email me and I'll see what can be done
v2.3
Bug Fixes:
Various changes to R caused installation and loading problems (including
invocation of the help browser on load) that have been fixed
Changes:
gtrans now attempts to perform reasonable triage when
use.adjacency==TRUE; specifically, if it can easily identify the
input data type, it will override the use of the adjacency method for
cases in which its use would obviously be a very bad idea. This will
have no effect for those with smaller graphs, or who use
use.adjacency==FALSE, but will improve performance for those with
large, sparse graphs who never got around to noticing the
use.adjacency argument
as.edgelist.sna uses new network package coercion option, the main
effect of which is to ensure that missingness is preserved during
coercion; previously, this information was lost (not exactly a bug,
but an unfortunate and sometimes unexpected consequence of the way
that the network package handled edgelist coercion and the fact that
sna relied on it); network v1.7 or later is required for this
functionality, with old behavior preserved for network <=v1.6
gplot now uses 50-sided vertices by default (except for two-mode data,
which now by default uses a combination of 4 and 50 sided vertices
gplot now uses edge line types to alter the way lines are drawn
rather than borders, as before) [contributed by Alex Montgomery]
gplot now automagically scales objects based on the number of vertices
in the graph
New Functions:
is.edgelist.sna - Check to see if a given object is an sna edgelist
New Features:
gplot now supports a feature (vertex.enclose) to enclose vertices
within circles for greater visibility [contributed by Alex
Montgomery]
gplot now supports an argument (thresh.absval) to control whether edge
values are thresholded by absolute (default) or signed value
gplot now allows edge border line types to be set differently for
positive and negative edges [contributed by Alex Montgomery]
grecip now supports a correlation-based measure inspired by the
work of David Dekker
gtrans now supports rank-order and correlation-based measures for
valued data (the last implementing a proposal of David Dekker)
v2.2 - Changes and Bug Fixes
Changes:
as.sociomatrix.sna should now handle the new network edgelist format
more gracefully; note, however, that edgelists for undirected graphs
are still handled differently in network and sna, so one is usually
better off coercing directly with as.edgelist.sna, rather than first
going through as.matrix
geodist now uses memory more efficiently, and should perform better on
large graphs
gplot now has some refinements to the placement of curved edges and to
arrow widths [contibuted by Alex Montgomery]
gplot.layout.fruchtermanreingold now uses an approximating backend
(ported from network) which can greatly reduce layout time in large
graphs (at some aesthetic cost); traditional results can still be
obtained by appropriate choice of layout parameters
Bug Fixes:
cutpoints failed with connected="strong" when called with a graph
containing loops [Submitted by Ben Madin]
gden could return twice the density when called with mode="graph"
[Submitted by Zack Almquist]
gvectorize was censoring the upper triangle when called with
censor.as.na=FALSE and mode="digraph" [Submitted by Zack Almquist]
v2.1 - New Features, Changes, and Bug Fixes
Changes:
as.sociomatrix.sna and as.edgelist.sna are now treated as user-level
functions (and are documented as such)
betweenness and closeness now consistently enforce undirected behavior
with gmode=="graph" (this will not generally be visible to the end
user)
connectedness now uses sparse graph methods (and is much, much faster)
gplot now defaults to boxed.labels=FALSE
rgbn now uses (and enforces) finite maxiter values
New Features:
evcent now allows user control over the number of iterations used in the
internal eigenvector calculation (previously fixed), and supports an
option for calculation using R's eigen() routine
Bug Fixes:
betweenness was not treating gmode=="graph" consistently with tmaxdev
in both states (causing inaccurate centralization results) [Submitted
by Natalie Cotton]
brokerage.Rd would produce an installation error on some platforms for
unknown reasons (seems to be an R issue, but man page formatting has
been changed to be rid of it)
bicomponent.dist was failing on very large graphs
gplot was not plotting label positions correctly for pos=5; also fixed
a bug with interactive selection by component [Fix by Alex Montgomery]
kcores processed ignore.eval incorrectly [Submitted by mpezz@tiscali.it]
redist failed when called with a single graph and mode="graph" [Submitted
by Greg Bigwood]
v2.0 - New Functions, New Data Sets, New Features, Changes, and Bug Fixes
Changes:
The following functions now natively use sna edgelist format (and will
in most cases benefit from being passed data in sparse graph format):
add.isolates, betweenness, brokerage, centralization, closeness, degree,
dyad.census, evcent, gden, geodist, gplot, gplot3d, grecip, gtrans,
kcycle.census, kpath.census, rgraph, stresscent, symmetrize,
triad.census
Various backend modifications have been made which should improve
scalability and performance for many routines
bbnam routines now default to often-realistic informative priors rather
than to never-realistic uninformative ones, and no longer randomly
reorder MCMC draws on output; they can also accept data in a wider range
of formats
bbnam.bf now computes and displays results in log scale
centralization will now compute scores for all input networks (previously
computed scores for only one network, so this may break some code)
degree with gmode=="graph" now forces conventional graph theoretic degree,
as opposed to total degree (which was the prior default behavior). This
may break some existing code (but hopefully not much), but produces more
conventional behavior in the undirected case. Users desiring the old
behavior can obtain it by simply setting gmode=="digraph". [Suggested
by Alex Montgomery]
evcent now uses a sparse matrix eigenvector calculation mechanism (which
should greatly enhance scalability)
gplot's label placement algorithm has been improved [Submitted by Alex
Montgomery]
gden now omits NA edges (previously, they were treated as simply absent)
gplot and gplot3d now pass edgelists to the gplot.layout.* and
gplot3d.layout.* functions; all existing layout functions have been
modified to support this, but user-generated code may need to be
adjusted accordingly
gplot and gplot3d now force data into two-mode form when gmode="twomode",
regardless of original type; by default, vertex color (and, in gplot,
shape) are used to differentiate between row and column vertices.
[Submitted by Alex Montgomery]
gplot.layout.fruchtermanreingold and gplot.layout.kamadakawai now use
edge values when placing points
rgbn has a new (much faster) backend implementation
rgraph now uses an accelerated generation mechanism in the homogeneous
case
New Functions:
as.edgelist.sna - Convert data to sna edgelist format
bicomponent.dist - Compute bicomponents and associated statistics
cug.test - Simplified univariate conditional uniform graph tests
cutpoints - Identify cutpoints in an input graph
clique.census - Calculate the clique census of an input graph
flowbet - Calculate the flow betweenness scores of network positions
gt - "Graph transpose"; transposition of one or more networks
kcores - Calculate the k-core decomposition of a graph
loadcent - Calculate the load centrality scores of network positions
maxflow - Calculate maximum flows between vertices
redist - Find distances between positions based on regular equivalence
rgnmix - Generate mixing-conditioned random graphs
New Data Sets:
coleman - Coleman's high school friendship data
New Features:
New sna edgelist format now supported by almost all routines (see
above for list of those which now have native support)
Bipartite extension to adjacency structures now supported for most sna
routines
Several functions now have the option to return their results in sna
edgelist format (useful to avoid adjacency matrix conversion for large
graphs). These include add.isolates, read.nos, rewire.ud, rewire.ws,
rgbn, rgnm, rgraph, rguman, rgws, and symmetrize.
as.sociomatrix.sna - now supports force.bipartite, bipartite attribute
betweenness now has an option to use edge values when computing
geodesics; several alternative measures have also been added
bn now takes lists of networks
closeness now has an option to use edge values when computing geodesics;
an alternative measure has also been added
degree now has an option to ignore edge values
gden now has an option to ignore edge values
geodist now supports valued edges; an option has been added to return
predecessor lists
gplot now has an option ("interact.bycomp") to interactively move entire
components (instead of individual vertices) [Submitted by Alex
Montgomery]
grecip now supports an additional index
netlm now supports use of t-statistics for resampling tests (new default)
rgbn supports a new exact sampling method
stresscent now has an option to use edge values when computing geodesics
Bug Fixes:
rgbn was returning a redundant state
v1.5 - New Functions, Changes, and Bug Fixes
New Functions:
component.largest - Extract the largest component from a graph
kcycle.census - Compute cycle census information for a graph
kpath.census - Compute path census information for a graph
Changes:
as.sociomatrix.sna now supports sparse matrices from the SparseM
package (assuming that said package is installed); such objects
should now be transparently supported by sna routines (albeit
not efficiently)
Bug Fixes:
An error in the Holland and Leinhardt citation in the dyad.census
documentation has been fixed [submitted by Ben Lind]
Disabled lnam example which was apparently taking a long time to run on
the CRAN test systems (but not on mine, for some reason)
v1.4 - New Functions, Changes, and Bug Fixes
New Functions:
nacf - Network autocorrelation function
neighborhood - Return the matrix of n-th order neighbors for an input graph
Bug Fixes:
Likelihood computation in lnam was innaccurate in some cases [submitted by
Eric Neuman]
Changes:
A few remaining mva references were purged (see changes for v1.3)
lnam has been rewritten using a different optimization scheme; this should
prove more robust in some cases, but does change certain command-line
arguments (see the man page for details)
v1.3 - New Features, Changes, and Bug Fixes
New Features:
lnam now allows the user to specify multiple AR and/or MA effects
simultaneously; network objects are also supported
Changes:
R version 2.0.0 is now required, due to the fact that mva has been
phased out, mva was required for earlier R versions, and R CMD check
now requires that any such package be mentioned on the "suggests" line
of DESCRIPTION (thus generating an error, since mva is defunct). My
apologies to anyone out there who is clinging to 1.x for some reason;
I'd have left the support in, if that were feasible
gplot and gplot3d now have displaylabels set to !missing(label) by default;
this eliminates the need to manually set displaylabels when labels are
explicitly specified [suggested by Gabor Grothendieck]
Bug Fixes:
ask=TRUE changed to ask=dev.interactive() where applicable, to ensure
support for non-interactive devices [submitted by Kurt Hornik]
network has been added to "suggests" line in DESCRIPTION, to calm down
R check; it is helpful, but not essential
v1.2 - New Functions, Changes, and Bug Fixes
New Functions:
ego.extract - Extract egocentric networks from complete network data
Changes:
Added a small tweak which improves performance of Romney-Batchelder model
(consensus) where corner solutions are initially obtained for competency
scores
brokerage has now been backended, with substantial performance gains
New backend functionality has been added for faster/more efficient graph
storage; this is not user-visible, but will eventually result in better
performance for many current routines (as it becomes integrated into
the underlying code)
Bug Fixes:
Man page for components erroneously referred to the symmetrize function in
place of component.dist
Removed an errant two-parameter atan reference which was broken by changes
in R >= 2.3
v1.1 - New Functions, New Features, and Bug Fixes
New Functions:
brokerage, summary.brokerage, print.summary.brokerage - Perform a Gould-
Fernandez brokerage analysis
read.dot - Read data in DOT format
New Features:
The variant of the Romney-Batchelder model implemented by consensus was
not standard; consensus now also supports the canonical version.
(Ironically, this variant seems slightly less effective, but is
compatible with the multinomial processing tree interpretation.)
Bug Fixes:
equiv.clust and sedist would fail with multiple graphs if g argument
was not explicitly set [submitted by Kieran Healy]
triad.classify was not returning the right values in certain cases
v1.0 - New Functions, New Features, Changes, and Bug Fixes
New Functions:
bn.* - Estimation for biased net models
print.equiv.clust - Printing for equiv.clust objects
rgbn - Draw from a biased net model
structure.statistics - Return the structure statistics for one or more
graphs
write.dl - Write output in DL format
write.nos - Write output in NOS format
New Features:
Most functions now support networks objects (a la the network package)
and graph lists in a sensible way
blockmodel now takes hclust objects or block membership vectors as input
consensus now supports iterative reweighting (Romney-Batchelder model)
equiv.clust now supports user-supplied distance matrices
plot.sociomatrix can now suppress cell borders, and supports scaling of
label text [latter suggested by Mark Handcock]
triad.census and triad.classify now can now be set to obtain undirected
triad classifications using mode="graph"
Changes
addisolates is now defunct (was deprecated - use add.isolates instead)
grecip's output was confusing (edgewise measure was not what one might
expect). grecip now gives a more conventional edgewise measure, with
the old measure available as "dyadic.nonnull". [suggested by Simone
Gabbriellini]
netlm now uses more refined null hypotheses, and has been internally
streamlined; output has been modified slightly. Modifications include
the use of Dekker et al.'s semi-partialling procedure as the QAP
default, and explicit compution of two-sided tests.
netlogit has been changed in a manner analogous to netlm.
Bug Fixes
bbnam plot methods were creating ugly labels/titles
equiv.clust and plot.equiv.clust were not fully compatible with recent
changes in hclust
gplot3d.arrow and gplot3d.loop (and hence gplot3d) were not drawing edge
attributes properly
print.blockmodel was failing under certain circumstances
gtrans was producing inaccurate results on some graphs [submitted by
Jessica Flack]
plot.sociomatrix was generating annoying (albeit harmless) warning
messages
sedist was not considering all edges for mode=="graph" [submitted by
Alex Montgomery]
v0.51 - New Features and Bug Fixes
New Features:
gplot now supports vertex rotation, more refined label placement,
and improved loop positioning [submitted by Alex Montgomery]
gplot.layout.fruchtermanreingold, gplot.layout.kamadakawai, and their
three-dimensional counterparts now accept "seed" coordinates through
layout.par [suggested by Alex Montgomery]
Bug Fixes:
efficiency was producing incorrect values on some graphs
options()$expression was limiting the number of vertex relocations
in gplot's interactive mode
gplot3d was not returning z coordinate [submitted by Alex Montgomery]
v0.5 - New Functions, Changes, and Bug Fixes
New Functions:
gplot.arrow - Custom arrow-drawing for gplot
gplot.layout.fruchtermanreingold - New layout method
gplot.layout.hall - New layout method
gplot.layout.kamadakawai - New layout method
gplot.layout.target - New layout method
gplot.loop - Custom loop-drawing for gplot
gplot.target - Draw "target diagrams" using gplot
gplot3d - Three-dimensional graph visualization
gplot3d.arrow - Draw three-dimensional "arrows"
gplot3d.layout.* - Layout functions for gplot3d
gplot3d.loop - Draw three-dimensional "loops"
is.connected - Determine whether or not one or more graphs is connected
rgmn - Draw from the G(N,M) graph distribution
rguman - Draw from the U|MAN graph distribution
Changes:
addisolates has been changed to add.isolates; addisolates is deprecated
geodist now uses Inf as the default inf.replace value (was N); note that
this may affect the default behavior of routines which use geodesic
distance matrices on disconnected graphs
gplot overhaul continues:
gplot aspect ratio now fixed at 1:1
gplot now uses Fruchterman-Reingold as its default layout method
gplot now supports manual setting of plot limits
gplot now uses red as the default vertex color
All plotting elements are now polygons; scaling is now performed
relative to fractions of the plotting region, and all elements
can be scaled.
Labels are no longer plotted by default (and can be switched off with
displaylabels)
Various other minor changes have been made; see ?gplot
Many routines (e.g., triad.classify, triad.census, geodist, etc.) now
have C backends. This results in a tremendous performance boost (e.g.,
1-2 orders of magnitude) on large graphs.
Package code has been substantially reorganized
A cumulative list of contributors has been added to the package -- see the
CONTRIBUTORS file
Bug Fixes
betweenness no longer produces NaNs on disconnected vertex sets
lubness was producing incorrect values for some graphs
v0.44 - New Functions, New Features, Changes, and Bug Fixes
New Functions:
%c% - Composition of two adjacency matrices
gapply - Apply functions over vertex neighborhoods.
gplot.layout.* - Layout functions for gplot
lnam - Fit a linear network autocorrelation model
plot.lnam - Plotting for lnam objects
print.lnam - Printing for lnam objects
print.summary.lnam - Printing for lnam summary objects
summary.lnam - Detailed printing for lnam objects
New Features:
consensus now supports union/intersection LAS and column/row
raw report methods (useful for replicating "classic" CSS work)
gplot sports a wide range of new features, including:
An interactive mode, which allows for manual repositioning
of vertices. (It's not pretty, but it works.)
Silent return of the x,y coordinates for all vertices.
This is useful for adding features to an existing plot, or for
saving a given layout for later reuse.
Adjacency matrices can now be used as parameters to set
edge widths, line types, and colors [submitted by Alex Montgomery]
Overplotting support [submitted by Alex Montgomery]
Support for loops (i.e., self-ties) [submitted by Alex Montgomery]
Curved edges, with adjustable curvature [submitted by Alex Montgomery]
Support for user-supplied layout methods
Expansion of existing layout methods, including new arguments
Changes:
triad.census now automatically removes the diagonal before
calculating the triad census; a note on valued/unvalued data has
also been added to the man page [suggested by Skye Bender-deMoll
and Dan McFarland]
Vertex layouts for gplot are now generated externally, via
the gplot.layout.* functions. Arbitrary parameters may be
passed to the layout functions via an argument list; further,
since layout functions are identified with match.fun(),
user-added functions can also be employed. The default layout
method is now segeo (spring embedder results were sometimes
very good, but too uneven).
Bug Fixes:
degree was reporting incorrect tmaxdev values in some cases
triad.classify switched 111D and 111U [submitted by Dan McFarland and
Skye Bender-deMoll]
v0.43 - Minor Changes, Updates, and New
Features
Changes:
Contact URL has been updated
Updates:
In keeping with the new rigorousness regarding data.frame structures in
1.8.0, many data.frames have been changed to lists. This should be
transparent to the end user, but will avoid the generation of errors
under the new system.
Removed references to (deprecated) plot.hclust
New Features:
gplot now supports spring embedding. Providing unsupported layout modes
now produces an error, rather than undefined behavior (as before).
Options have also been added for suppressing the printing of axes,
and for placing opaque boxes behind vertex labels.
v0.42 - Minor Changes
Changes:
Author contact information has been updated
plot.matrix is now plot.sociomatrix, in order to ensure compatibility
with the new method standards; all code should be updated to reflect
this fact
v0.41 - Updates, New Features, and Bug Fixes
Updates:
Deprecated function .Alias removed (was used in netlm, netlogit)
Changed keyword "network" to "math" in all help pages [as requested
by the Keepers of R]
Various internal changes to plot/print/summary methods, in order
to maintain consistency with their generic equivalents; these
will (hopefully) have no visible effect
New Features:
component.dist now supports weak, unilateral, strong, and recursive
component definitions
Bug Fixes:
component.dist was calculating recursively connected components for
connected="strong", instead of strongly connected components
pstar was dumping (internal) edge perturbation data to the screen,
which was harmless but very annoying; names for pstar coefficients
were not being recognized by glm
v0.4 - New Features, Changes, and Fixes
New Functions:
connectedness - Find the Krackhardt connectedness of a graph or graph
stack
dyad.census - Compute the Holland and Leinhardt MAN dyad census for a
graph or graph stack
efficiency - Find the Krackhardt efficiency of a graph or graph stack
hierarchy - Find the hierarchy score of a graph or graph stack.
infocent - Find the information centrality scores of network positions
[submitted by David Barron]
lubness - Find Krackhardt's Least Upper Boundedness of a graph or graph
stack
reachability - Find the reachability matrix of a graph.
triad.census - Conduct a Davis and Leinhardt triad census for a graph or
graph stack
triad.classify - Return the Davis and Leinhardt classification of a given
triad
New Features:
gplot now adjusts line width for valued graphs, via the edge.lwd
parameter, and allows users to set the vertex point type (using
vertex.pch. gmode=="graph" now sets usearrows<-FALSE, and new
gmode "twomode" automagically plots two-mode data. New display modes
have also been added: geodist (MDS of proximities); adj (MDS with
adjacency as similarity); and seham (MDS of SE dist using Hamming
method).
grecip now supports a "measure" option, which allows the user to choose
between "dyadic" reciprocity (aRb iff bRa) and "edgewise" reciprocity
(aRb if bRa). The old version (and default) is the "dyadic" option,
which (as the above implies) takes null dyads into account; the
"edgewise" definition omits null dyads from the calculation.
gtrans now supports a "measure" option, which allows the user to choose
between "weak" transitivity (aRc if aRb & bRc) and "strong"
transitivity (aRc iff aRb & bRc). The old version was strong-only,
but much of the field prefers the weak version. Each of these options
has a respective census variant ("weakcensus", "strongcensus") which
returns a count of legal triads rather than a rate.
pstar now supports separate options for strong/weak transitivity scores,
and for strong/weak transitive triad counts.
Bug Fixes:
Labeling optimizers were not pre-sorting to guard against
mixed-up exchange lists (these are now checked, too).
Various centrality measures were not returning the correct
absolute maximum deviation with tmaxdev==TRUE.
gtrans was ignoring settings and counting diagonal entries [submitted by
David Barron]
pstar behaved badly when external predictors were unnamed [submitted by
Gindo Tampubolon]
Changes:
Comparable labelings are now _enforced_ where applicable.
lab.optimize.gumbel now just tries to scare you off, rather
than refusing you altogether.
Path-based indices (betweenness, closeness, stresscent,
graphcent, etc.) now automatically assume
cmode=="undirected" whenever gmode="graph".
The default mode for gtrans is now "weak", to match the usage of W&F
v0.3 - New Features, Changes, and Fixes
General:
All standard functions are now documented
R package format is now supported
New Functions:
component.dist - Find the distribution of (maximal) component sizes
within a graph
components - Find the number of (maximal) components within a given graph
eval.edgeperturbation - Evaluate a function on a given graph with and
without a given edge, returning the difference between the results in
each case.
interval.graph - Construct one or more interval graphs (and
exchangeability vectors) from a set of spells
mutuality - Find the number of mutual (i.e., reciprocated) edges in a
graph
gscor - Computes the structural correlation between graphs
gscov - Computes the structural covariance between graphs
gtrans - Compute the transitivity of an input graph or graph stack.
lab.optimize - Optimize a bivariate graph statistic over a set of
labelings
pstar - Fits a p* model using the logistic regression approximation
read.nos - Reads input files in Neo-OrgStat format
rperm - Draw a random permutation vector with exchangability constraints
Features and Modifications:
diag.remove, upper.tri.remove, and lower.tri.remove now allow replacement
with any value
gplot now provides a slew of new parameters to change color, size, etc.
of vertices, edges, and labels
gscor and gscov now delegate to lab.optimize
gscor, gscov, structdist now support exchange lists (via lab.optimize)
v0.2 - New Features and Some Bug Fixes
New Functions:
blockmodel - Generate blockmodels based on partitions of network
positions
blockmodel.expand - Generate a graph from a given blockmodel using
particular expansion rules
bonpow - Find the Bonacich power centrality scores of network positions
equiv.clust - Find clusters of positions based on an equivalence relation
evcent - Find the eigenvector centralities of network positions
gdist.plotdiff - Plot differences in graph-level statistics against
inter-graph distances
gdist.plotstats - Plot statistics associated with graphs against
(projected) inter-graph distances
make.stochastic - Make a graph stack row, column, or row-column
stochastic
plot.blockmodel - Plotting for blockmodel objects
plot.equiv.clust - Plotting for equivalence clustering objects
prestige - Find actor prestige scores from one of several measures
print.blockmodel - Printing for blockmodel objects
print.summary.blockmodel - Printing for blockmodel summary objects
sedist - Find distances between positions based on structural equivalence
stackcount -Find the number of matrices in a graph stack (matrix or array
data acceptable)
summary.blockmodel - Detailed printing for blockmodel objects
Features and Modifications:
All centrality routines can now be rescaled (division by maximum realized
value); default is always FALSE
Bug Fixes:
Various centrality routines once again return values for the selected
graph and vertices