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<div class="metaphacts_help">
<ol class="breadcrumb" style="background:white;border:none;padding-left:0px;">
<li>
<semantic-link title="Help" data-uri="http://help.metaphacts.com/resource/Start">Help</semantic-link>
</li>
<li>
<semantic-link title="Documentation" uri="http://help.metaphacts.com/resource/DocumentationOverview">Documentation</semantic-link>
</li>
<li>
<semantic-link title="Components" uri="http://help.metaphacts.com/resource/HTML5Components">Components</semantic-link>
</li>
<li class="active">Graph Component</li>
</ol>
<h1> Graph Component </h1>
<div class="documentation__intro">
<div class="documentation__intro__description">
<p>Useful for visualization of directed and undirected <a href="http://en.wikipedia.org/wiki/Graph_(mathematics)" target="blank"> graphs</a>.</p>
<p>Scales best for small to mid-size graphs with ideally not more than up to hundred nodes and edges depending on the layout.
Custom styling of the graph is possible including dynamic access to bindings from the query result.
However, access to external, dynamic functions (e.g. for computing a gradient) is not yet supported.
</p>
</div>
<div class="documentation__intro__demo">
<semantic-graph height='500px'
query='
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix person: <http://example.com/person/>
prefix org: <http://example.com/org/>
prefix foaf: <http://xmlns.com/foaf/0.1/>
CONSTRUCT {
?s ?p ?o
} WHERE {
{
SELECT ?s ?p ?o WHERE {
VALUES (?s ?p ?o)
{
(person:alice foaf:knows person:bob)
(person:alice foaf:knows person:carol)
(person:carol foaf:knows person:mike)
(person:mike foaf:knows person:carol)
(person:bob foaf:knows person:carol)
(person:alice foaf:knows person:mike)
(person:alice foaf:member org:W3C)
(person:mike foaf:member org:W3C)
(person:alice rdf:type foaf:Person)
(person:carol rdf:type foaf:Person)
(person:mike rdf:type foaf:Person)
(person:bob rdf:type foaf:Person)
}
}
}
}'
hide-predicates='["<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>"]'
graph-style='[
{
"selector": "node[property(<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>) *= iri(<http://xmlns.com/foaf/0.1/Person>)]",
"style": {
"background-color": "#2980b9",
"text-background-color": "#2980b9"
}
},
{
"selector": "node[resource = iri(<http://example.com/person/alice>)]",
"style": {
"background-color": "#27ae60",
"background-fit": "cover",
"text-background-color": "#27ae60",
"shape": "ellipse"
}
},
{
"selector": "node[resource = iri(<http://example.com/org/W3C>)]",
"style": {
"background-image": "//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/W3C%C2%AE_Icon.svg/210px-W3C%C2%AE_Icon.svg.png",
"background-fit": "cover",
"content": "",
"height": "50",
"width": "50"
}
},
{
"selector": "edge[resource = iri(<http://xmlns.com/foaf/0.1/knows>)]",
"style": {
"line-style": "dashed"
}
}
]'>
<semantic-graph-layout-breadthfirst animate=true roots='["<http://example.com/person/alice>"]' circle=true></semantic-graph-layout-breadthfirst>
</semantic-graph>
</div>
</div>
<h2> Configuration </h2>
<h3> Graph Layouts </h3>
<h4> CoSE (Compound Spring Embedder) </h4>
<div class="documentation__example">
<div class="documentation__example__description">
</div>
<div class="documentation__example__demo">
<mp-code-example>
<semantic-graph height='600px' query='[[> Help:SemanticGraphSampleQuery]]'>
<semantic-graph-layout-cose ideal-edge-length=70></semantic-graph-layout-cose>
</semantic-graph>
</mp-code-example>
</div>
</div>
<h4>CoSE bilkent</h4>
<div class="documentation__example">
<div class="documentation__example__description">
The CoSE layout for Cytoscape.js by the i-Vis group in Bilkent University. It is an evolution of the CoSE algorithm that is more computationally expensive but produces near-perfect results.
<p><cite>U. Dogrusoz, E. Giral, A. Cetintas, A. Civril, and E. Demir, "A Layout Algorithm For Undirected Compound Graphs", Information Sciences, 179, pp. 980-994, 2009.</cite></p>
<p>For available configuration properties see <a href="https://github.com/cytoscape/cytoscape.js-cose-bilkent#api">CoSE-bilkent</a>, </p>
</div>
<div class="documentation__example__demo">
<mp-code-example>
<semantic-graph height='600px' query='[[> Help:SemanticGraphSampleQuery]]'>
<semantic-graph-layout-cose-bilkent ideal-edge-length=200></semantic-graph-layout-cose-bilkent>
</semantic-graph>
</mp-code-example>
</div>
</div>
<h4> Circle </h4>
<div class="documentation__example">
<div class="documentation__example__description">
</div>
<div class="documentation__example__demo">
<bs-tabs id="circle-layout">
<bs-tab event-key="1" title="Circle">
<mp-code-example>
<semantic-graph height='600px' query='[[> Help:SemanticGraphSampleQuery]]'>
<semantic-graph-layout-circle></semantic-graph-layout-circle>
</semantic-graph>
</mp-code-example>
</bs-tab>
<bs-tab event-key="3" title="Circle (counterclockwise)">
<mp-code-example>
<semantic-graph height='600px' query='[[> Help:SemanticGraphSampleQuery]]'>
<semantic-graph-layout-circle clockwise=false></semantic-graph-layout-circle>
</semantic-graph>
</mp-code-example>
</bs-tab>
<bs-tab event-key="2" title="Circle (ordered)">
<mp-code-example>
<semantic-graph
height='600px'
query='
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix person: <http://example.com/person/>
prefix org: <http://example.com/org/>
prefix foaf: <http://xmlns.com/foaf/0.1/>
CONSTRUCT {
?s ?p ?o
} WHERE {
{
SELECT ?s ?p ?o WHERE {
VALUES (?s ?p ?o)
{
(person:alice foaf:knows person:bob)
(person:alice foaf:knows person:carol)
(person:carol foaf:knows person:mike)
(person:mike foaf:knows person:carol)
(person:bob foaf:knows person:carol)
(person:alice foaf:knows person:mike)
(person:alice foaf:member org:W3C)
(person:mike foaf:member org:W3C)
(person:alice foaf:order 3)
(person:carol foaf:order 4)
(person:mike foaf:order 5)
(person:bob foaf:order 2)
(org:W3C foaf:order 1)
}
}
}
}
'
hide-predicates='["<http://xmlns.com/foaf/0.1/order>"]'
>
<semantic-graph-layout-circle sort-by='<http://xmlns.com/foaf/0.1/order>'></semantic-graph-layout-circle>
</semantic-graph>
</mp-code-example>
</bs-tab>
<bs-tab event-key="4" title="Circle (start angle + radius + sweep)">
<mp-code-example>
<semantic-graph height='600px' query='[[> Help:SemanticGraphSampleQuery]]'
>
<semantic-graph-layout-circle start-angle='3.1415' radius='700' sweep='2'></semantic-graph-layout-circle>
</semantic-graph>
</mp-code-example>
</bs-tab>
</bs-tabs>
</div>
</div>
<h4> Concentric </h4>
<div class="documentation__example">
<div class="documentation__example__description">
<p>The concentric layout positions nodes in concentric circles, based on a numeric value of some node property. Placing nodes with higher value in levels towards the centre.</p>
<p>If property is not specified, node degree is used as a concentric weight. For a node, the <i>degree</i> is the number of edge connections it has. Each time a node is referenced as source or target of an edge in the graph, that counts as an edge connection</p>
</div>
<div class="documentation__example__demo">
<bs-tabs id="concentric-layout">
<bs-tab event-key="1" title="Default">
<mp-code-example>
<semantic-graph height='600px' query='[[> Help:SemanticGraphSampleQuery]]'>
<semantic-graph-layout-concentric min-node-spacing=70></semantic-graph-layout-concentric>
</semantic-graph>
</mp-code-example>
</bs-tab>
<bs-tab event-key="3" title="Concentric by property">
<mp-code-example>
<semantic-graph height='600px'
query = '
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix person: <http://example.com/person/>
prefix org: <http://example.com/org/>
prefix foaf: <http://xmlns.com/foaf/0.1/>
prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
CONSTRUCT {
?s ?p ?o
} WHERE {
{
SELECT ?s ?p ?o WHERE {
VALUES (?s ?p ?o)
{
(person:alice foaf:knows person:bob)
(person:alice foaf:knows person:carol)
(person:carol foaf:knows person:mike)
(person:mike foaf:knows person:carol)
(person:bob foaf:knows person:carol)
(person:alice foaf:knows person:mike)
(person:alice foaf:member org:W3C)
(person:mike foaf:member org:W3C)
(person:alice foaf:weight 10)
(person:carol foaf:weight 10)
(person:mike foaf:weight 10)
(person:bob foaf:weight 10)
(org:W3C foaf:weight 20)
}
}
}
}
'
hide-predicates = '["<http://xmlns.com/foaf/0.1/weight>"]'
>
<semantic-graph-layout-concentric animate=true concentric = '<http://xmlns.com/foaf/0.1/weight>' min-node-spacing=70 equidistant=true></semantic-graph-layout-concentric>
</semantic-graph>
</mp-code-example>
</bs-tab>
</bs-tabs>
</div>
</div>
<h4> Breadthfirst </h4>
<div class="documentation__example">
<div class="documentation__example__description">
</div>
<div class="documentation__example__demo">
<bs-tabs id="breadthfirst-layout">
<bs-tab event-key="1" title="Breadthfirst">
<mp-code-example>
<semantic-graph height='600px' query='[[> Help:SemanticGraphSampleQuery]]'>
<semantic-graph-layout-breadthfirst roots='["<http://example.com/person/alice>"]'></semantic-graph-layout-breadthfirst>
</semantic-graph>
</mp-code-example>
</bs-tab>
<bs-tab event-key="2" title="Breadthfirst (circle)">
<mp-code-example>
<semantic-graph height='600px' query='[[> Help:SemanticGraphSampleQuery]]'>
<semantic-graph-layout-breadthfirst roots='["<http://example.com/person/alice>"]' circle=true></semantic-graph-layout-breadthfirst>
</semantic-graph>
</mp-code-example>
</bs-tab>
</bs-tabs>
</div>
</div>
<h4>Grid</h4>
TBD
<h4>Preset</h4>
<div class="documentation__example">
<div class="documentation__example__description">
</div>
<div class="documentation__example__demo">
<mp-code-example>
<semantic-graph
query = '
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix person: <http://example.com/person/>
prefix org: <http://example.com/org/>
prefix foaf: <http://xmlns.com/foaf/0.1/>
prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
CONSTRUCT {
?s ?p ?o
} WHERE {
{
SELECT ?s ?p ?o WHERE {
VALUES (?s ?p ?o)
{
(person:alice foaf:knows person:bob)
(person:alice foaf:knows person:carol)
(person:carol foaf:knows person:mike)
(person:mike foaf:knows person:carol)
(person:bob foaf:knows person:carol)
(person:alice foaf:knows person:mike)
(person:alice foaf:x 100)
(person:carol foaf:x 400)
(person:mike foaf:x 100)
(person:bob foaf:x 250)
(person:alice foaf:y 100)
(person:carol foaf:y 200)
(person:mike foaf:y 300)
(person:bob foaf:y 10)
}
}
}
}
'
height = 800
hide-predicates = '["<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>", "<http://xmlns.com/foaf/0.1/x>", "<http://xmlns.com/foaf/0.1/y>"]'
>
<semantic-graph-layout-preset animate=true position-x='<http://xmlns.com/foaf/0.1/x>' position-y='<http://xmlns.com/foaf/0.1/y>'></semantic-graph-layout-preset>
</semantic-graph>
</mp-code-example>
</div>
</div>
<h3>Compound Nodes</h3>
<div class="documentation__example">
<div class="documentation__example__description">
</div>
<div class="documentation__example__demo">
<bs-tabs id="compound-node">
<bs-tab event-key="1" title="Collapse/Expand">
<mp-code-example>
<semantic-graph
query = '
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix person: <http://example.com/person/>
prefix org: <http://example.com/org/>
prefix foaf: <http://xmlns.com/foaf/0.1/>
prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
CONSTRUCT {
?s ?p ?o
} WHERE {
{
SELECT ?s ?p ?o WHERE {
VALUES (?s ?p ?o)
{
(person:A4 foaf:group person:A2)
(person:A5 foaf:group person:A2)
(person:A2 foaf:group person:A1)
(person:A3 foaf:group person:A1)
}
}
}
}
'
height = 600
group-by = '<http://xmlns.com/foaf/0.1/group>'
graph-style = '[
{
"selector": "edge[resource = iri(<http://xmlns.com/foaf/0.1/group>)]",
"style": {
"visibility": "hidden"
}
}
]'
>
<semantic-graph-layout-cose animate=false></semantic-graph-layout-cose>
<semantic-graph-extension-expand-collapse animate=false></semantic-graph-extension-expand-collapse>
</semantic-graph>
</mp-code-example>
</bs-tab>
<bs-tab event-key="2" title="Compound">
<mp-code-example>
<semantic-graph
query = '
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix person: <http://example.com/person/>
prefix org: <http://example.com/org/>
prefix foaf: <http://xmlns.com/foaf/0.1/>
prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
CONSTRUCT {
?s ?p ?o
} WHERE {
{
SELECT ?s ?p ?o WHERE {
VALUES (?s ?p ?o)
{
(person:A4 foaf:group person:A2)
(person:A5 foaf:group person:A2)
(person:A2 foaf:group person:A1)
(person:A3 foaf:group person:A1)
}
}
}
}
'
height = 600
group-by = '<http://xmlns.com/foaf/0.1/group>'
graph-style = '[
{
"selector": "edge[resource = iri(<http://xmlns.com/foaf/0.1/group>)]",
"style": {
"visibility": "hidden"
}
}
]'
>
<semantic-graph-layout-cose animate=false></semantic-graph-layout-cose>
</semantic-graph>
</mp-code-example>
</bs-tab>
</bs-tabs>
</div>
</div>
<h3>Styling</h3>
<h4>RDF selectors</h4>
<div class="documentation__example">
<div class="documentation__example__description">
</div>
<div class="documentation__example__demo">
<mp-code-example>
<semantic-graph height='500px'
query='
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix person: <http://example.com/person/>
prefix org: <http://example.com/org/>
prefix foaf: <http://xmlns.com/foaf/0.1/>
CONSTRUCT {
?s ?p ?o
} WHERE {
{
SELECT ?s ?p ?o WHERE {
VALUES (?s ?p ?o)
{
(person:alice foaf:knows person:bob)
(person:alice foaf:knows person:carol)
(person:carol foaf:knows person:mike)
(person:mike foaf:knows person:carol)
(person:bob foaf:knows person:carol)
(person:alice foaf:knows person:mike)
(person:alice foaf:member org:W3C)
(person:mike foaf:member org:W3C)
(person:alice rdf:type foaf:Person)
(person:carol rdf:type foaf:Person)
(person:mike rdf:type foaf:Person)
(person:bob rdf:type foaf:Person)
}
}
}
}'
hide-predicates='["<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>"]'
graph-style='[
{
"selector": "node[property(<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>) *= iri(<http://xmlns.com/foaf/0.1/Person>)]",
"style": {
"background-color": "#2980b9",
"text-background-color": "#2980b9"
}
},
{
"selector": "node[resource = iri(<http://example.com/person/alice>)]",
"style": {
"background-color": "#27ae60",
"background-fit": "cover",
"text-background-color": "#27ae60",
"shape": "ellipse"
}
},
{
"selector": "node[resource = iri(<http://example.com/org/W3C>)]",
"style": {
"background-image": "//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/W3C%C2%AE_Icon.svg/210px-W3C%C2%AE_Icon.svg.png",
"background-fit": "cover",
"content": "",
"height": "50",
"width": "50"
}
},
{
"selector": "edge[resource = iri(<http://xmlns.com/foaf/0.1/knows>)]",
"style": {
"line-style": "dashed"
}
}
]'>
<semantic-graph-layout-breadthfirst animate=true roots='["<http://example.com/person/alice>"]' circle=true></semantic-graph-layout-breadthfirst>
</semantic-graph>
</mp-code-example>
</div>
</div>
<h4>Handlebars Templates</h4>
<h3>Extensions</h3>
<h4>Navigator</h4>
<div class="documentation__example">
<div class="documentation__example__description">
</div>
<div class="documentation__example__demo">
<mp-code-example>
<semantic-graph height='600px' query='[[> Help:SemanticGraphSampleQuery]]'>
<semantic-graph-layout-breadthfirst roots='["<http://example.com/person/alice>"]'></semantic-graph-layout-breadthfirst>
<semantic-graph-extension-navigator style="height: 150px; width: 150px;"></semantic-graph-extension-navigator>
</semantic-graph>
</mp-code-example>
</div>
</div>
<h4>PanZoom</h4>
<div class="documentation__example">
<div class="documentation__example__description">
</div>
<div class="documentation__example__demo">
<mp-code-example>
<semantic-graph height='600px' query='[[> Help:SemanticGraphSampleQuery]]'>
<semantic-graph-layout-breadthfirst roots='["<http://example.com/person/alice>"]'></semantic-graph-layout-breadthfirst>
<semantic-graph-extension-panzoom pan-indicator-min-opacity=0.1></semantic-graph-extension-panzoom>
</semantic-graph>
</mp-code-example>
</div>
</div>
<h4>Expand/Collapse</h4>
</div>