Command reference

All nwcommands commands, grouped as in help nwtopical.

Concepts

• netexample
• netexp — Network expression and function
• netlist
• netname
• newnetname
• nodeid

Import/Export

• nw2fromedge — Import two-mode network data from edgelist
• nw2set — Declare data to be two-mode network data
• nw2toedge — Convert two-mode network to edgelist
• nwappend — Append network dataset
• nwexport — Export network as Pajek or Ucinet file
• nwfromedge — Imports network data from edgelist
• nwimport — Import network
• nwsave — Save network data in file
• nwset — Declare data to be network data
• nwtoedge — Convert network to edgelist
• nwuse — Load Stata network dataset
• nwwebuse — Load network data over the web

Generators

• nwbridges — Calculate bridges
• nwdissimilar — Generate node dissimilarities
• nwduplicate — Duplicate a network
• nwdyadprob — Generate a network based on tie probabilities
• nwexpand — Expand variable to network
• nwgen — Network extensions to generate
• nwgenerate — Network extensions to generate
• nwgenvar — Network extensions to generate
• nwgeodesic — Calculate shortest paths between
• nwhomophily — Generate a homophily network
• nwlattice — Generate a lattice network
• nwpath — Calculate paths between nodes
• nwpermute — Generate permutation of a network
• nwpref — Generate a preferential-attachment network
• nwrandom — Generate a random network
• nwreach — Calculate reachability network
• nwring — Generate a ring-lattice network
• nwsimilar — Generate node similarities
• nwsmall — Generate a small-world network
• nwsubset — Subset the nodes of a network
• nwtranspose — Transpose a network

Information

• nwcurrent — Report and set current network
• nwdyads — Dyad census
• nwissymmetric — Check if network is symmetric
• nwmotifs — 4-node undirected motif/graphlet census
• nwname — Obtain and change meta-information of a network
• nwsummarize — Summarize a network
• nwtabulate — One-way table of dyads
• nwtriads — Triad census of the network

Manipulation

• nw2project — One-mode projection of a two-mode network
• nwaddnodes — Add nodes to network
• nwattime — Static graph view of a temporal network at a given time
• nwcollapse — Collapse a network
• nwdichotomize — Dichotomize a network at a threshold (built on nwrecode)
• nwdrop — Drop networks or network nodes
• nwdropnodes — Drop nodes from a network
• nwkeep — Keep a network (or only certain nodes)
• nwkeepnodes — Keep nodes of a network
• nwname — Obtain and change meta-information of a network
• nwnoderename — Rename a single node in a network
• nwpreserve — Preserve and restore network data
• nwproject — One-mode projection of a two-mode network (alias for nw2project)
• nwrecode — Recode network
• nwrename — Rename a network
• nwreplace — Replace network
• nwreplacemat — Replace network with Stata or Mata matrix
• nwrestore — Restore network data previously preserved
• nwsubset — Subset the nodes of a network
• nwsym — Symmetrize network
• nwsymmetrize — Symmetrize network (alias for nwsym)
• nwtranspose — Transpose a network

Analysis

Centrality

• nw2degree — Two-mode (bipartite) degree centrality
• nwbetween — Calculate betweenness centrality
• nwcentrality — Node centrality measures
• nwcloseness — Calculate closeness centrality
• nwdegree — Degree centrality and distribution
• nwevcent — Calculate eigenvector centrality
• nwinduced — Induced, endogenous and exogenous centrality
• nwkatz — Calculate a Katz-inspired distance-decay centrality
• nwpagerank — PageRank centrality

Cohesion, Components & Subgroups

• nwbridges — Calculate bridges
• nwclique — Maximal clique enumeration
• nwcomponents — Calculate network components / largest component
• nwkcomponents — Maximal k-component enumeration
• nwkcore — k-core decomposition
• nwkplex — Maximal k-plex enumeration
• nwnclan — Maximal n-clan enumeration
• nwnclique — Maximal n-clique enumeration
• nwsimmelian — Calculate Simmelian ties

Community Detection

• nwcommunity — Detect communities via the Louvain method or label propagation
• nwmodularity — Score an existing node partition using Newman’s modularity
• nwspectral — Graph Laplacian spectral analysis

Positions, Roles & Equivalence

• nw2clustering — Clustering coefficient (transitivity) of a two-mode network
• nwassortativity — Newman’s assortativity coefficient
• nwbalance — Structural balance of a signed network
• nwbrokerage — Gould-Fernandez brokerage roles
• nwburt — Calculate Burt structural hole measures
• nwclustering — Clustering coefficient (transitivity) of a network
• nwconcor — CONCOR structural-equivalence blockmodel
• nwconstraint — Calculate Burt’s constraint
• nwcoreperiphery — Discrete core-periphery detection
• nwdissimilar — Generate node dissimilarities
• nwfactions — Partition nodes into a specified number of cohesive factions
• nwhierarchy — Hierarchical clustering of nodes (role/position analysis)
• nwlambda — Edge (line) connectivity matrix between all node pairs
• nwmatching — Maximum-cardinality bipartite matching
• nwmixing — E-I index and mixing table for a categorical node attribute
• nwshared — Calculate number of shared neighbors between nodes and saves information in network
• nwsimilar — Generate node similarities
• nwsimindex — Common-neighbor similarity indices between all node pairs

Paths, Reachability & Ego Networks

• nwaltergen — Generate a variable from alter/neighbor attributes
• nwego — Ego-network size and density
• nwgeodesic — Calculate shortest paths between
• nwmaxflow — Maximum flow and minimum cut between two nodes
• nwneighbor — Extract the network neighbors of a node
• nwpath — Calculate paths between nodes
• nwrandomwalk — Mean random-walk hitting time to a target node
• nwreach — Calculate reachability network

Statistical Estimation of Networks

• nwcorrelate — Correlate networks and variables
• nwcug — Conditional Uniform Graph (CUG) test
• nwergm — Exponential-family random graph model (ERGM) estimation
• nwqap — Multivariate QAP regression
• nwsaom — Stochastic actor-oriented model (SAOM) estimation between observed network waves
• nwutility — Calculate utility scores according to Jackson and Wollinsky (1996)

Other Analysis Utilities

• nwcontext — Create a context variable
• nwgen — Network extensions to generate
• nwgenerate — Network extensions to generate
• nwgenvar — Network extensions to generate
• nwnode — Checks if node exists in a network
• nwturnover — Tie turnover/stability between two waves of the same network
• nwvalue — Returns a tie value

Dynamic & Event-Based Models

• nwdynam — Dynamic Network Actor Model - choice, rate, and choice_coordination sub-models (MLE)
• nwrem — Relational event model (ordinal partial likelihood, MLE)

Utility Commands

• nwds — List loaded networks, in the style of Stata’s own ds

Utilities

• nwclear — Clear all networks and variables from memory
• nwcurrent — Report and set current network
• nwerrorcodes — What this package’s own custom return codes mean
• nwinstall — Install Stata menu/dialogs
• nwload — Load a network as Stata variables
• nwnetworktypes — How commands classify binary/directed/weighted/signed/two-mode networks
• nworder — Reorder networks in dataset
• nwsync — Sync network with Stata variables
• nwtomata — Return adjacency matrix of network
• nwtomatafast — Return link to adjacency matrix of network
• nwtostata — Copy a Mata matrix into Stata variables
• nwunab — Unabbreviate network list
• nwvalidate — Validate network name
• nwvalidvars — Validate Stata variables for network

Visualization

• nwdendrogram — Plot a wheel dendrogram
• nwmovie — Interactive, animated network movie (panel waves or a relational-event timeline)
• nwmoviexy — Animate a sequence of networks (alias for nwmovie)
• nwplot — Plot a network
• nwplotmatrix — Plot a network as sociomatrix

Programming

• nwcompressobs — Compresses observations in Stata

Uncategorized

• nw_helpwriter — errno help file yet
• nw_resetrc — errno help file yet
• schemeinfo — errno help file yet

• unw_defs — errno help file yet

• _nwdatasync
• _nwnodeid
• _nwnodelab
• _nwtomata
• animate
• nwalphabetical
• nwcohesion
• nwcommands
• nwergm_estat
• nwinternals
• nwintro
• nwprogramming
• nwsaom_estat
• nwsaom_remarks
• nwstart
• nwtab1
• nwtab2
• nwtab3
• nwtopical