A Sankey Series visualises movement or change between different items, using nodes and links.
Simple Sankey
To create a Sankey Series, use the sankey
series type.
series: [
{
type: 'sankey',
fromKey: 'from',
toKey: 'to',
sizeKey: 'size',
},
],
In this configuration:
fromKey
defines the start node of each link.toKey
defines the end node of each link.sizeKey
defines the size of each link.
Circular loops are not allowed in Sankey diagrams, and links forming a circular loop will be removed.
Alignment
The horizontal placement of the nodes can be customised using the align
property on node
.
series: [
{
type: 'sankey',
fromKey: 'from',
toKey: 'to',
sizeKey: 'size',
node: {
align: 'justify',
},
},
],
There are four values supported:
left
moves nodes as far left as possible.right
moves nodes as far right as possible.center
moves nodes as close to the centre as possible.justify
moves nodes as far left as possible, except for the last nodes, which are pushed right.
Customisation
Node Style
The styling of all nodes can be customised using the node
property.
series: [
{
type: 'sankey',
fromKey: 'from',
toKey: 'to',
sizeKey: 'size',
node: {
fill: '#34495e',
stroke: '#2c3e50',
strokeWidth: 2,
},
},
],
Link Style
The styling of all links can be customised using the link
property.
series: [
{
type: 'sankey',
fromKey: 'from',
toKey: 'to',
sizeKey: 'size',
link: {
fill: '#34495e',
fillOpacity: 0.25,
stroke: '#2c3e50',
strokeWidth: 1,
strokeOpacity: 0.25,
},
},
],