Network graph

Network graphs for visualising connections

Updated 2 months ago to v9.1.0 by Flourish team

How to use this template

Network graph

A template that renders a network of points and links as a force-directed graph (AKA a “node-link diagram”).

Data requirements

The minimum data requirement is a two-column list of “Links”. Each row in the list specifies the points (displayed as circles) at either end of a link (displayed as a line). You can optionally include a third column that is used to set the width of the link. (This can be thought of as visual indicator of the strength or weight of a link.)

While the Links sheet is sufficient to create a network diagram, a second “Points” sheet allows for further flexibility. Rather than letting Flourish determine all the points to add to the network based on those listed in the Links sheet, the rows in the Points sheet define the complete collection of points. This sheet can also be used to assign groups (encoded using colour) and sizes to the points.

Tips

  • Initially it is assumed that the network diagram is undirected. To set your network to be directional, you can select “Show arrows on links” in the “Links” settings.
  • The D3 force documentation may be useful for understanding the advanced settings.

This section documents API usage specific to this template, so for an introduction we suggest you refer to the generic API documentation instead.

template: @flourish/network-graph

version: 9

Template data

There are two different formats in which you can supply data to this template. Which one will be more convenient for you likely depends on the source of your data, as described below.

Array of objects with arbitrary keys, and a bindings object

This format is most likely useful when you have data from an external source, such as CSV data loaded from d3-dsv. You should supply this attached to the opts.data, which might look like:

    {
        links: [
            { "LinksHeader1": ..., "LinksHeader2": ..., ... },
            { "LinksHeader1": ..., "LinksHeader2": ..., ... },
            { "LinksHeader1": ..., "LinksHeader2": ..., ... },
            ...
        ],
        nodes: [
            { "NodesHeader1": ..., "NodesHeader2": ..., ... },
            { "NodesHeader1": ..., "NodesHeader2": ..., ... },
            { "NodesHeader1": ..., "NodesHeader2": ..., ... },
            ...
        ]
    }

... but with the keys being the column headers from your source data instead. To tell the API how these values from each column should be associated with the keys that the template is expecting, you must also supply an object attached to opts.bindings. (The meanings of the keys in the bindings object are documented below.) The minimal bindings you can supply for this template are as shown in this example:

{
    template: "@flourish/network-graph",
    version: "9",
    bindings: {
        links: {
            source: "LinksHeader1",
            target: "LinksHeader2"
        },
        nodes: {
            
        }
    },
    data: {
        links: [
            { "LinksHeader1": ..., "LinksHeader2": ..., ... },
            { "LinksHeader1": ..., "LinksHeader2": ..., ... },
            { "LinksHeader1": ..., "LinksHeader2": ..., ... },
            ...
        ],
        nodes: [
            { "NodesHeader1": ..., "NodesHeader2": ..., ... },
            { "NodesHeader1": ..., "NodesHeader2": ..., ... },
            { "NodesHeader1": ..., "NodesHeader2": ..., ... },
            ...
        ]
    }
}

All possible bindings that you can supply are shown in this example:

{
    template: "@flourish/network-graph",
    version: "9",
    bindings: {
        links: {
            source: "LinksHeader1",
            target: "LinksHeader2",
            value: "LinksHeader3"
        },
        nodes: {
            id: "NodesHeader1",
            group: "NodesHeader2",
            size: "NodesHeader3",
            image: "NodesHeader4",
            metadata: ["NodesHeader5", "NodesHeader6", ...]
        }
    },
    data: {
        links: [
            { "LinksHeader1": ..., "LinksHeader2": ..., ... },
            { "LinksHeader1": ..., "LinksHeader2": ..., ... },
            { "LinksHeader1": ..., "LinksHeader2": ..., ... },
            ...
        ],
        nodes: [
            { "NodesHeader1": ..., "NodesHeader2": ..., ... },
            { "NodesHeader1": ..., "NodesHeader2": ..., ... },
            { "NodesHeader1": ..., "NodesHeader2": ..., ... },
            ...
        ]
    }
}

(As before, the keys containing "Header" would be replaced by column names from your data source.)

Array of objects with template-defined keys

There is an alternative format you can use, which is likely to be easier to use if your data is not from a spreadsheet source. With this alternative format you supply your data to the template as an array of objects, attached to opts.data, where the keys must be those used by the template, as documented below. In this case there is no need to supply a bindings object, since the key names are already those expected by the template. The required properties in the data object are as follows (scroll down for a description of what each property is):

{
template: "@flourish/network-graph",
version: "9",
data: {
    links: [
        {
            source: ...,
            target: ...
        },
        ...
    ],
    nodes: [
        {
            metadata: [...]
        },
        ...
    ]
},
...
}

And the full list of all possible properties is as follows:

{
template: "@flourish/network-graph",
version: "9",
data: {
    links: [
        {
            source: ...,
            target: ...,
            value: ...
        },
        ...
    ],
    nodes: [
        {
            id: ...,
            group: ...,
            size: ...,
            image: ...,
            metadata: [...]
        },
        ...
    ]
},
...
}

Meanings of the template data keys:

  • links.source: source
  • links.target: target
  • links.value: A numerical value used to set the thickness of the links.
  • nodes.id: A unique identifier for each point in the network. If not specified, point information will be extracted from the links sheet.
  • nodes.group: A group to which the point belongs. If set, can be used to color the points. Ignored if ID not set
  • nodes.size: A numerical value used to size the points. Ignored if ID not set
  • nodes.image: An image to go into the circle
  • nodes.metadata: Specify additional columns to include in custom popup text (popup text must also be specified in settings panel). Ignored if ID not set

Template settings

Options for opts.state.

Points

constant_node_radius number

Radius.

min_node_radius number

Minimum radius. Any smaller circles will be scaled up to the specified level. (Ignored if greater than the “Maximum radius” setting.)

max_node_radius number

Maximum radius.

Min: 1

node_scale_type string

Scale points relative to:.

Allowed values:

  • current (Maximum value in data)
  • arbitrary (Arbitrary maximum value)

max_node_value number

Value. Values bigger than this maximum will have a radius equal to the maximum radius

auto_scale boolean

Scale points down when not enough space.

Allowed values:

  • true (On)
  • false (Off)

max_fullness number

Max total point area. What percent of the space can the points fill before they are scaled down.

label_show string

Show.

Allowed values:

  • all (All)
  • neighbourhood (Currently selected and neighbours)
  • click (On hover)
  • none (None)

label_size number

Size.

label_color_mode string

Color mode.

Allowed values:

  • auto (Auto)
  • fixed (Fixed)

label_color color

Color.

image_opacity number

Opacity.

Max: 1

fade_opacity number

Opacity of de-emphasized items. When a point is emphasized, how opaque the rest of the network should be

Max: 1

Color

fill_color color

Fill color.

color.scale_type string

Scale type.

Allowed values:

  • categorical (Categorical)
  • numeric (Numeric)

color.categorical_palette colors

Palette.

color.categorical_extend boolean

Extend. Automatically generate additional colours when needed to avoid the palette colours being used more than once.

color.categorical_custom_palette text

Custom overrides. Type the name of the entity whose colour you want to set, a colon and then a colour (using a name, hex-code or rgb declaration). Multiple colours can be set using multiple lines. For example:<br /><hr />Party 1: red<br />Party 2: #4455AA<br />Party 3: rgb(30,168,26)

color.numeric_type string

Scale type.

Allowed values:

  • sequential (Sequential)
  • diverging (Diverging)

color.binning boolean

In linear mode, the color scale will run as a smooth gradient between 2 colors. In binned mode, the gradient will be divided in smaller blocks.

Allowed values:

  • false (Linear)
  • true (Binned)

color.bin_mode string

Binning mode.

Allowed values:

  • fixed (Fixed width)
  • quantile (Quantile)
  • custom (Custom thresholds)

color.bin_count number

Number of bins.

color.bin_thresholds string

Custom thresholds. Write your custom thresholds, separated by a ";" For example 5;10;15

color.sequential_palette string

Palette.

Allowed values:

  • Oranges
  • Reds
  • Blues
  • Greens
  • Greys
  • Purples
  • Viridis
  • Inferno
  • Magma
  • Plasma
  • Warm
  • Cool
  • CubehelixDefault (Cubehelix)
  • BuGn (Blue/Green)
  • BuPu (Blue/Purple)
  • GnBu (Green/Blue)
  • OrRd (Orange/Red)
  • PuBuGn (Purple/Blue/Green)
  • PuBu (Purple/Blue)
  • PuRd (Purple/Red)
  • RdPu (Red/Purple)
  • YlGnBu (Yellow/Blue/Green)
  • YlGn (Yellow/Green)
  • YlOrBr (Yellow/Orange/Brown)
  • YlOrRd (Yellow/Orange/Red)
  • Carrots
  • Custom

color.sequential_reverse boolean

Reverse.

color.sequential_custom_min color

Minimum color.

color.sequential_custom_max color

Maximum color.

color.sequential_color_space string

Color space.

Allowed values:

  • rgb (RGB)
  • lab (LAB)
  • hcl (HCL)
  • hsl (HSL)

color.sequential_custom_domain boolean

Domain.

Allowed values:

  • false (Auto)
  • true (Custom)

color.sequential_domain_min number

Min.

color.sequential_domain_max number

Max.

color.diverging_palette string

Palette.

Allowed values:

  • RdBu (Red/Blue)
  • RdYlGn (Red/Yellow/Green)
  • PiYG (Pink/Yellow/Green)
  • BrBG (Brown/Blue/Green)
  • PRGn (Purple/Red/Green)
  • PuOr (Purple/Orange)
  • RdGy (Red/Grey)
  • RdYlBu (Red/Yellow/Blue)
  • Spectral
  • Custom

color.diverging_reverse boolean

Reverse.

color.diverging_custom_min color

Minimum color.

color.diverging_custom_mid color

Midpoint color.

color.diverging_custom_max color

Maximum color.

color.diverging_color_space string

Color space.

Allowed values:

  • rgb (RGB)
  • lab (LAB)
  • hcl (HCL)
  • hsl (HSL)

color.diverging_custom_domain boolean

Domain.

Allowed values:

  • false (Auto)
  • true (Custom)

color.diverging_domain_min number

Min.

color.diverging_domain_mid number

Mid.

color.diverging_domain_max number

Max.

node_stroke_width number

Width.

Max: 5

node_stroke_color color

Color. When not set, stroke color is same as background color

node_highlight_stroke_color color

Color (highlighted). When not set, stroke color is same as background color

directional boolean

Show arrows on links.

Width.

Minimum width. Any smaller links will be scaled up to the specified level. (Ignored if greater than the “Maximum width” setting.)

Maximum width.

Min: 1

Scale links relative to:.

Allowed values:

  • current (Maximum value in data)
  • arbitrary (Arbitrary maximum value)

Value. Values bigger than this maximum will have a width equal to the maximum width

Color. When not set, uses same color as main text

Opacity.

Max: 1

Color (highlighted). When not set, uses same color as main text

Opacity (highlighted).

Max: 1

Popups

popup.show_popups boolean

Popups.

Allowed values:

  • true (Enabled)
  • false (Disabled)

popup.is_custom boolean

Popup contents.

Allowed values:

  • false (Auto)
  • true (Custom content)

popup.custom_template text

Popup content. The text to appear in the popup. You can use {{column_name}} to add a value from your data. It must be in a selected column, but you can add columns to “Metadata” if you just want to include them for use in the popup. Advanced users can include HTML to apply layouts, formatting, images, etc.

popup.show_pointer boolean

Pointer.

popup.show_shadow boolean

Shadow.

popup.style_popups boolean

Custom styling.

popup.text_color color

Text colour.

popup.align string

Alignment.

Allowed values:

  • left (fa-align-left)
  • center (fa-align-center)
  • right (fa-align-right)

popup.font_size number

Font size.

Min: 1

popup.fill_color color

Fill colour.

popup.opacity number

Fill opacity.

Max: 1

popup.padding number

Padding.

popup.border_radius number

Radius. Corner radius of popup

Popup opacity on overlap. When the popup is overlapping other points and links, the opacity of the popup will change so most of the chart is still visible.

Legend

legend.show_legend boolean

Allowed values:

  • true (Enabled)
  • false (Disabled)

legend.text_color color

Color.

legend.text_size number

Size.

legend.text_weight string

Weight.

Allowed values:

  • bold (Bold)
  • normal (Normal)

legend.title_mode string

Title mode.

Allowed values:

  • auto (Auto)
  • fixed (Fixed)

legend.title string

Title.

legend.title_weight string

Weight.

Allowed values:

  • bold (Bold)
  • normal (Normal)

legend.swatch_width number

Width.

legend.swatch_height number

Height.

legend.swatch_radius number

Roundness. The radius of the corners of the swatch (in pixels)

legend.order_override text

Custom order override. Manually specify the order of legend entries (one entry per line)

legend.orientation string

Orientation.

Allowed values:

  • horizontal (Horizontal)
  • vertical (Vertical)

legend_position string

Legend position.

Allowed values:

  • above (Above)
  • below (Below)

legend_interaction string

When clicking a legend item.

Allowed values:

  • filter_and_layout (Hide/show groups and update layout)
  • filter_in_position (Hide/show groups in current layout)
  • none (Nothing)

Animations

animate_simulation boolean

Animate network simulation. Display the initial animation of the network

simulation_speed number

Animation speed.

Min: 1

Max: 10

Advanced

many_body_strength number

Repulsion between points. How strongly the points repulse each others. Known as “many-body force”. Measured in arbitrary units.

Max: 50

collision_strength number

Collision-force strength. How strongly the points push away from each other when colliding. In arbitrary units.

Max: 10

Number formatting

localization.input_decimal_separator string

Decimal separator in data sheet. Used for interpreting your data. Only change if data is not displaying on the chart as expected.

Allowed values:

  • . (.)
  • , (,)

localization.output_separators string

Number format to display. How the numbers should appear on chart labels

Allowed values:

  • ,. (12,235.67)
  • ., (12.345,67)
  • . (12235.67)
  • , (12345,67)
  • . (12 235.67)
  • , (12 345,67)

Layout

layout.body_font font

Main font. This font will apply to the whole graphic by default, but you can optionally change the font for the title, subtitle, footer, etc in the Header and Footer settings panels.

layout.font_color color

Text color. This color will apply to the whole graphic by default, but you can optionally change the color for individual text elements, in other settings panels.

layout.background_color_enabled boolean

Color.

Allowed values:

  • true (On)
  • false (Off)

layout.background_image_enabled boolean

Image.

Allowed values:

  • true (On)
  • false (Off)

layout.background_color color

Background color.

layout.background_image_src url

Image URL.

layout.background_image_size string

Size.

Allowed values:

  • cover (Fill)
  • contain (Fit)
  • auto (Original)
  • 100% 100% (Stretch)

layout.background_image_position string

Position.

Allowed values:

  • top left (Top left)
  • top center (Top center)
  • top right (Top right)
  • center left (Center left)
  • center center (Center)
  • center right (Center right)
  • bottom left (Bottom left)
  • bottom center (Bottom center)
  • bottom right (Bottom right)

layout.max_width_target string

Maximum width. Apply a maximum width to just the main graphic or everything (main graphic plus header, footer, etc)

Allowed values:

  • none (None)
  • wrapper (Everything)
  • primary (Main graphic)

layout.max_width number

Maximum width. Leave blank to stretch to container width

Min: 50

layout.max_width_align string

Align.

Allowed values:

  • left (fa-align-left)
  • center (fa-align-center)
  • right (fa-align-right)

layout.layout_order string

Layout order.

Allowed values:

  • stack-default (data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABYAAAAdCAYAAAHZdKxuAAAAAXNSR0IArs4c6QAAANhJREFUSA3tVNEOwiAM7Iy/p2/wkTz6g5gjOVZZEepcjMmWLBTau95ugIh6lpzzLcb4wNpFJaRk9MIahxAyXmD7mC7BC2RlFbliQjFMpJTujOdGs/ECwRoP3rlKoEzNJlz3+CwutK0NLRVt2QhjggA9n2IGEKANMxmt0VVsEfxgzfX7zL3ZiqbXLjcKc8vEORk5/75mMB/7u11uuIpdbtDCc5R3l/s+e+pmHt1foza7Nv6IXOeHiqGk9zWtSk1cN2cPrItnYjZzHZEZYtacxHTiuANSO/xN8AS4uW8Rw1Gu2AAAAABJRU5ErkJggg==)
  • stack-2 (data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABYAAAAdCAYAAAHZdKxuAAAAAXNSR0IArs4c6QAAAMpJREFUSA3tVMsKwyAQNKW/l970Iz32Bw0jjKTrSLUY0oOBsO5rnOwYnTs9W0ppDyG8EcsOkw8uauu9T3jR2+75yJxBnnC4JxMxxlezg0V9VsJsIGz75TfKdlkpg3aPcT8TsPNRMJjZEIf5xaAAahUyE+RtfcZvtFLoFh95aFXxH4hCWpUoTCg7fxqUfB4yEcl/CJlNy5qbfuZA8m8CwJ77q2djSj50lnuAWbOAOQlXxCuRHxcUje2XzfgrYzBpHUXLkmxh181SpnEAB4Vg0DSGhHsAAAAASUVORK5CYII=)

layout.space_between_sections string

Space between sections.

Allowed values:

  • 0.5 (▁)
  • 1 (▃)
  • 1.5 (▄)
  • custom (...)

layout.space_between_sections_custom number

Custom.

Max: 100

layout.margin_top number

Top.

layout.margin_right number

Right.

layout.margin_bottom number

Bottom.

layout.margin_left number

Left.

layout.border.enabled boolean

Show borders around visualisation.

layout.border.top.width number

Top.

layout.border.top.style string

Style.

Allowed values:

  • solid (Solid)
  • dashed (Dashed)
  • dotted (Dotted)

layout.border.top.color color

Color.

layout.border.right.width number

Right.

layout.border.right.style string

Style.

Allowed values:

  • solid (Solid)
  • dashed (Dashed)
  • dotted (Dotted)

layout.border.right.color color

Color.

layout.border.bottom.width number

Bottom.

layout.border.bottom.style string

Style.

Allowed values:

  • solid (Solid)
  • dashed (Dashed)
  • dotted (Dotted)

layout.border.bottom.color color

Color.

layout.border.left.width number

Left.

layout.border.left.style string

Style.

Allowed values:

  • solid (Solid)
  • dashed (Dashed)
  • dotted (Dotted)

layout.border.left.color color

Color.

layout.header_align string

Alignment.

Allowed values:

  • left (fa-align-left)
  • center (fa-align-center)
  • right (fa-align-right)

layout.title string

layout.title_styling boolean

Change title styles.

layout.title_font font

Title Font.

layout.title_size string

Size.

Allowed values:

  • 1.4 (ᴀ)
  • 1.6 (A)
  • 2 (fa-font)
  • custom (...)

layout.title_size_custom number

Custom. Specify a custom responsive font size. Best results will be with values between 1.2 and 3

layout.title_weight string

Weight.

Allowed values:

  • bold (Bold)
  • normal (Regular)

layout.title_color color

Color.

layout.title_line_height number

Line height.

Max: 3

layout.title_space_above string

Space above.

Allowed values:

  • 0 (▁)
  • 0.5 (▃)
  • 1 (▄)
  • custom (...)

layout.title_space_above_custom number

Custom.

Max: 100

layout.subtitle string

layout.subtitle_styling boolean

Change subtitle styles.

layout.subtitle_font font

Subtitle Font.

layout.subtitle_size string

Size.

Allowed values:

  • 1.4 (ᴀ)
  • 1.6 (A)
  • 2 (fa-font)
  • custom (...)

layout.subtitle_size_custom number

Custom. Specify a custom responsive font size. Best results will be with values between 1.2 and 3

layout.subtitle_weight string

Weight.

Allowed values:

  • bold (Bold)
  • normal (Regular)

layout.subtitle_color color

Color.

layout.subtitle_line_height number

Line height.

Max: 3

layout.subtitle_space_above string

Space above.

Allowed values:

  • 0 (▁)
  • 0.5 (▃)
  • 1 (▄)
  • custom (...)

layout.subtitle_space_above_custom number

Custom.

Max: 100

layout.header_text string

layout.header_text_styling boolean

Styling.

layout.header_text_size string

Size.

Allowed values:

  • 1.2 (ᴀ)
  • 1.4 (A)
  • 1.6 (fa-font)
  • custom (...)

layout.header_text_size_custom number

Custom. Specify a custom responsive font size. Best results will be with values between 1.2 and 3

layout.header_text_weight string

Weight.

Allowed values:

  • bold (Bold)
  • normal (Regular)

layout.header_text_color color

Color.

layout.header_text_line_height number

Line height.

Max: 3

layout.header_text_space_above string

Space above.

Allowed values:

  • 0 (▁)
  • 0.5 (▃)
  • 1 (▄)
  • custom (...)

layout.header_text_space_above_custom number

Custom.

Max: 100

layout.header_border string

Allowed values:

  • top (Top)
  • bottom (Bottom)
  • none (None)

layout.header_border_width number

Width.

layout.header_border_color color

Color.

layout.header_border_style string

Style.

Allowed values:

  • solid (Solid)
  • dashed (Dashed)
  • dotted (Dotted)

layout.header_border_space number

Space. Space between border and header text

layout.header_logo_enabled boolean

Allowed values:

  • true (Enabled)
  • false (Disabled)

layout.header_logo_src url

URL.

layout.header_logo_height number

Height.

layout.header_logo_align string

Align. Align logo inside header or outer visualisation container

Allowed values:

  • outside (Outside)
  • inside (Inside)

layout.header_logo_position_inside string

Position.

Allowed values:

  • top (Top)
  • left (Left)
  • right (Right)

layout.header_logo_position_outside string

Position.

Allowed values:

  • left (Left)
  • right (Right)

layout.header_logo_margin_top number

Top.

layout.header_logo_margin_right number

Right.

layout.header_logo_margin_bottom number

Bottom.

layout.header_logo_margin_left number

Left.

layout.footer_align string

Alignment.

Allowed values:

  • left (fa-align-left)
  • center (fa-align-center)
  • right (fa-align-right)
  • justify (fa-align-justify)

layout.footer_text_size number

Size.

layout.footer_text_color color

Color.

layout.footer_styling boolean

Advanced footer styles.

layout.footer_font font

Font.

layout.source_name string

Source name.

layout.source_url string

Source url.

layout.multiple_sources boolean

Multiple sources.

layout.source_name_2 string

Source name.

layout.source_url_2 string

Source url.

layout.source_name_3 string

Source name.

layout.source_url_3 string

Source url.

layout.source_label string

Source label.

layout.footer_note string

Note.

layout.footer_note_secondary string

Note (secondary). The secondary note is placed below the source and primary note

layout.footer_logo_enabled boolean

Image.

Allowed values:

  • true (Enabled)
  • false (Disabled)

layout.footer_logo_src url

Image.

layout.footer_logo_src_light hidden

Image (light version). If provided this version will be used whenever the background colour is dark

Link.

layout.footer_logo_height number

Height.

layout.footer_logo_margin number

Margin.

layout.footer_logo_order string

Position.

Allowed values:

  • left (Left)
  • right (Right)

layout.footer_align_vertical string

V. align.

Allowed values:

  • flex-start (Top)
  • center (Center)
  • flex-end (Bottom)

layout.footer_border string

Allowed values:

  • top (Top)
  • bottom (Bottom)
  • none (None)

layout.footer_border_width number

Width.

layout.footer_border_color color

Color.

layout.footer_border_style string

Style.

Allowed values:

  • solid (Solid)
  • dashed (Dashed)
  • dotted (Dotted)

layout.footer_border_space number

Space. Space between border and footer text

Accessibility

layout.screenreader_hide_primary boolean

Screenreader mode for main visual container. Whether the main visual container is visible to screenreaders. (Text in the header and footer are always available to screenreaders.)

Allowed values:

  • true (Hidden)
  • false (Readable)

layout.screenreader_text_primary text

Screenreader description. A text alternative to the visual content that will only be visible to screenreaders, e.g. “The line chart shows China consistently higher than the other countries since 1990”. Do no replicate your title, since that will also be read by screenreaders.