option = {
series: {
type: 'sankey',
data: [{
name: 'a'
}, {
name: 'a1'
}, {
name: 'a2'
}, {
name: 'b1'
}, {
name: 'c'
}],
links: [{
source: 'a',
target: 'a1',
value: 5
}, {
source: 'a',
target: 'a2',
value: 10
}, {
source: 'a',
target: 'b1',
value: 1
}, {
source: 'b1',
target: 'c',
value: 2
}]
}
};