graph

<graph>

<graph> encodes a graph, which is a collection of nodes, and arcs which connect the nodes. 19.1 Graphs and Digraphs

Module

Attributes

In addition to global attributes

type

describes the type of graph.

Status	Recommended
Datatype	<rng:ref name="data.enumerated"/> data.enumerated
Suggested values include:	undirected undirected graph directed directed graph transitionNetwork a directed graph with distinguished initial and final nodes transducer a transition network with up to two labels on each arc
Note	If type is specified as undirected, then the distinction between the to and from attributes of the <arc> tag is neutralized. Also, the adj attribute, rather than the adjFrom and adjTo attributes, should be used to encode pointers to the ends of the arcs. If type is specified as directed (or any other value which implies directionality), then the adjFrom and adjTo attributes should be used, instead of the adj attribute.

order

states the order of the graph, i.e., the number of its nodes.

Status	Optional
Datatype	<rng:ref name="data.count"/> data.count
Values	A positive integer.

size

states the size of the graph, i.e., the number of its arcs.

Status	Optional
Datatype	<rng:ref name="data.count"/> data.count
Values	A non-negative integer.

Used by

model.divPart

May contain

analysis: interp interpGrp span spanGrp

certainty: certainty respons

core: cb gap index label lb milestone note pb

iso-fs: fLib fs fvLib

linking: alt altGrp anchor join joinGrp link linkGrp timeline

nets: arc node

spoken: incident kinesic pause shift vocal writing

textcrit: witDetail

transcr: addSpan damageSpan delSpan fw space

Declaration


<rng:element name="graph">
<rng:ref name="att.global.attributes"/>
<rng:optional>
 <rng:attribute name="type">
  <rng:choice>
   <rng:value>undirected</rng:value>
   <rng:value>directed</rng:value>
   <rng:value>transitionNetwork</rng:value>
   <rng:value>transducer</rng:value>
   <rng:data type="Name"/>
  </rng:choice>
 </rng:attribute>
</rng:optional>
<rng:optional>
 <rng:attribute name="order">
  <rng:ref name="data.count"/>
 </rng:attribute>
</rng:optional>
<rng:optional>
 <rng:attribute name="size">
  <rng:ref name="data.count"/>
 </rng:attribute>
</rng:optional>
<rng:group>
 <rng:optional>
  <rng:ref name="label"/>
  <rng:zeroOrMore>
   <rng:ref name="model.global"/>
  </rng:zeroOrMore>
 </rng:optional>
 <rng:choice>
  <rng:group>
   <rng:oneOrMore>
    <rng:ref name="node"/>
    <rng:zeroOrMore>
     <rng:ref name="model.global"/>
    </rng:zeroOrMore>
   </rng:oneOrMore>
   <rng:zeroOrMore>
    <rng:ref name="arc"/>
    <rng:zeroOrMore>
     <rng:ref name="model.global"/>
    </rng:zeroOrMore>
   </rng:zeroOrMore>
  </rng:group>
  <rng:group>
   <rng:oneOrMore>
    <rng:ref name="arc"/>
    <rng:zeroOrMore>
     <rng:ref name="model.global"/>
    </rng:zeroOrMore>
   </rng:oneOrMore>
   <rng:oneOrMore>
    <rng:ref name="node"/>
    <rng:zeroOrMore>
     <rng:ref name="model.global"/>
    </rng:zeroOrMore>
   </rng:oneOrMore>
  </rng:group>
 </rng:choice>
</rng:group>
</rng:element>

element graph
{
   att.global.attributes,
   attribute type
   {
      "undirected" | "directed" | "transitionNetwork" | "transducer" | xsd:Name
   }?,
   attribute order { data.count }?,
   attribute size { data.count }?,
   (
      ( label, model.global* )?,
      (
         ( ( node, model.global* )+, ( arc, model.global* )* )
       | ( ( arc, model.global* )+, ( node, model.global* )+ )
      )
   )
}

Example

<graph
  xml:id="cug1"
  type="undirected"
  order="5"
  size="4"
  rend="LABEL-PLACE bottom center NODE-FRAME none ARC solid line">
<label>Airline Connections in Southwestern USA</label>
<node xml:id="lax" degree="2">
  <label>LAX</label>
</node>
<node xml:id="lvg" degree="2">
  <label>LVG</label>
</node>
<node xml:id="phx" degree="3">
  <label>PHX</label>
</node>
<node xml:id="tus" degree="1">
  <label>TUS</label>
</node>
<node xml:id="cib" degree="0">
  <label>CIB</label>
</node>
<arc from="#lax" to="#lvg"/>
<arc from="#lax" to="#phx"/>
<arc from="#lvg" to="#phx"/>
<arc from="#phx" to="#tus"/>
</graph>

Note

One or more nodes and zero or more arcs in any order.

P5: Guidelines for Electronic Text Encoding and Interchange

<graph>