Sankey Diagram

The SankeyDiagram component accepts a query and displays a flow from one set of values to another.

To display a flow with multiple levels, like these examples, see Mutli-level below.

<SankeyDiagram 
    data={query_name} 
    sourceCol= sourceCol
    targetCol = targetCol
    valueCol= valueCol
/>

Vertical

<SankeyDiagram 
    data={query_name} 
    sourceCol=sourceCol
    targetCol=targetCol
    valueCol=valueCol
    orient=vertical
/>

Echarts Options String

<SankeyDiagram 
    data={traffic_data} 
    title="Sankey" 
    subtitle="A simple sankey chart" 
    sourceCol=source 
    targetCol=target 
    valueCol=count 
    echartsOptions={{
        title: {
            text: "Custom Echarts Option",
            textStyle: {
              color: '#476fff'
            }
        }
    }}
/>

Node Depth Override

<SankeyDiagram 
    data={apple_income_statement} 
    title="Apple Income Statement" 
    subtitle="USD Billions" 
    sourceCol=source 
    targetCol=target 
    valueCol=amount_usd 
    depthOverride={{'services revenue': 1}}
    nodeAlign=left
/>

Labels

Node Labels

`nodeLabels=name` (default)

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  nodeLabels=name
/>

`nodeLabels=value`

The value labels can be formatted using the `valueFmt` option.

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  nodeLabels=value
/>

`nodeLabels=full`

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  nodeLabels=full
  valueFmt=usd
/>

Link Labels

`linkLabels=full` (default)

Requires percentCol to show percentage beside value

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  valueFmt=usd
  linkLabels=full
/>

`linkLabels=value`

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  valueFmt=usd
  linkLabels=value
/>

`linkLabels=percent`

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  valueFmt=usd
  linkLabels=percent
/>

Custom Color Palette

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  linkColor=grey
  colorPalette={['#ad4940', '#3d8cc4', '#1b5218', '#ebb154']}
/>

Link Colors

`linkColor=grey` (default)

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  linkColor=grey
  colorPalette={['#ad4940', '#3d8cc4', '#1b5218', '#ebb154']}
/>

`linkColor=source`

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  linkColor=source
  colorPalette={['#ad4940', '#3d8cc4', '#1b5218', '#ebb154']}
/>

`linkColor=target`

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  linkColor=target
  colorPalette={['#ad4940', '#3d8cc4', '#1b5218', '#ebb154']}
/>

`linkColor=gradient`

<SankeyDiagram 
  data={simple_sankey} 
  sourceCol=source 
  targetCol=target 
  valueCol=amount 
  percentCol=percent 
  linkColor=gradient
  colorPalette={['#6e0e08', '#3d8cc4', '#1b5218', '#ebb154']}
/>

The syntax for multi-level sankey diagrams is the same, but the underlying query must represent all the levels using the same sourceCol and targetCol, so it is necessary to union each level together. sourceCol nodes on the next level will be linked to targetCol nodes in the previous level with the same name.

For example, here is the source for the visuals above.

```sql traffic_source
select 
    channel as source,
    'all_traffic' as target,
    count(user_id) as count
from events.web_events
group by 1,2

union all

select 
    'all_traffic' as source,
    page_route as target,
    count(user_id) as count
from events.web_events
group by 1, 2
‍```

<SankeyDiagram
    data={traffic_data}
    title="Sankey"
    subtitle="A simple sankey chart"
    sourceCol=source
    targetCol=target
    valueCol=count
/>

Options

Data

data

Required

Query name, wrapped in curly braces

Options:: query name

sourceCol

Required

Column to use for the source of the diagram

Options:: column name

targetCol

Required

Column to use for the target of the diagram

Options:: column name

valueCol

Required

Column to use for the value of the diagram

Options:: column name

percentCol

Column to use for the percent labels of the diagram

Options:: column name

depthOverride

Manual adjustment to location of each node {{'services revenue': 2}}

Options:: object containing node name and depth level (0 is first level)

emptySet

Sets behaviour for empty datasets. Can throw an error, a warning, or allow empty. When set to 'error', empty datasets will block builds in build:strict. Note this only applies to initial page load - empty datasets caused by input component changes (dropdowns, etc.) are allowed.

Options:

Default:: error

emptyMessage

Text to display when an empty dataset is received - only applies when emptySet is 'warn' or 'pass', or when the empty dataset is a result of an input component change (dropdowns, etc.).

Options:: string

Default:: No records

printEchartsConfig

Helper prop for custom chart development - inserts a code block with the current echarts config onto the page so you can see the options used and debug your custom options

Options:

Default:: false

Formatting & Styling

valueFmt

Format to use for valueCol (see available formats)

Options:: Excel-style format | built-in format | custom format

orient

Layout direction of the nodes in the diagram.

Options:

Default:: horizontal

sort

Whether the nodes are sorted by size in the diagram

Options:

Default:: false

nodeAlign

Controls the horizontal alignment of nodes in the diagram. When orient is vertical, nodeAlign controls vertical alignment.

Options:

Default:: justify

nodeGap

The gap between any two rectangles in each column of the the diagram.

Options:: number

Default:: 8

nodeWidth

The node width of rectangle in the diagram.

Options:: number

Default:: 20

outlineColor

Border color. Only accepts a single color.

Options:: CSS name | hexademical | RGB | HSL

Default:: transparent

outlineWidth

Border Width. It should be a natural number.

Options:: number

Default:: 1

colorPalette

Array of custom colours to use for the chart. E.g., {['#cf0d06','#eb5752','#e88a87']}

Options:: array of color strings (CSS name | hexademical | RGB | HSL)

Default:: built-in color palette

linkColor

Color to use for the links between nodes in the diagram

Options:

Default:: grey

Chart

title

Chart title. Appears at top left of chart.

Options:: string

subtitle

Chart subtitle. Appears just under title.

Options:: string

nodeLabels

Adds labels to the nodes of the diagram

Options:

Default:: name

linkLabels

Adds labels to the links between nodes

Options:

Default:: full (requires percentCol)

chartAreaHeight

Minimum height of the chart area (excl. header and footer) in pixels. Adjusting the height affects all viewport sizes and may impact the mobile UX.

Options:: number

Default:: 180

Custom Echarts Options

echartsOptions

Custom Echarts options to override the default options. See reference page for available options.

Options:: {{exampleOption:'exampleValue'}}

printEchartsConfig

Helper prop for custom chart development - inserts a code block with the current echarts config onto the page so you can see the options used and debug your custom options

Options:

Default:: false