add.edges Add Edges to a Network Object add.vertices Add Vertices to an Existing Network as.matrix.network Coerce a Network Object to Matrix Form as.network.matrix Coercion from Matrices to Network Objects as.sociomatrix Coerce One or More Networks to Sociomatrix Form attribute.methods Attribute Interface Methods for the Network Class deletion.methods Remove Elements from a Network Object edgeset.constructors Edgeset Constructors for Network Objects emon Interorganizational Search and Rescue Networks (Drabek et al.) flo Florentine Wedding Data (Padgett) get.edges Retrieve Edges or Edge IDs Associated with a Given Vertex get.neighborhood Obtain the Neighborhood of a Given Vertex is.adjacent Determine Whether Two Vertices Are Adjacent network Networks network.arrow Add Arrows or Segments to a Plot network.density Compute the Density of a Network network.dyadcount Return the Number of (Possibly Directed) Dyads in a Network Object network.edgecount Return the Number of Edges in a Network Object network.extraction Extraction and Replacement Operators for Network Objects network.indicators Indicator Functions for Network Properties network.initialize Initialize a Network Class Object network.layout Vertex Layout Functions for plot.network network.loop Add Loops to a Plot network.naedgecount Identifying and Counting Missing Edges in a Network Object network.operators Network Operators network-package Classes for Relational Data network.size Return the Size of a Network network.vertex Add Vertices to a Plot permute.vertexIDs Permute (Relabel) the Vertices Within a Network plot.network.default Two-Dimensional Visualization for Network Objects prod.network Combine Networks by Edge Value Multiplication read.paj Read a Pajek Project or Network File and Convert to an R 'Network' Object sum.network Combine Networks by Edge Value Addition which.matrix.type Heuristic Determination of Matrix Types for Network Storage