Parliament chart
Updated 4 years ago to v5.1.0 by Flourish team
How to use this template
This template is ideal for showing the number of parliament seats owned by each party. It provides you with the ability to examine the difference in seats held between two elections, with an option to have a nice animation when displaying the change. The chart is accompanied by a table and a legend, both of which are optional. The table provides a summary of the seat change between the two elections. The legend on default is turned off, but can be added, and has a mouseover effect when hovering over one of the party names. The chart will also flip vertically on mobile.
Data requirements
You must have at least two columns. One with the party name, and another with the total number of seats for the current election. There is also an optional column which can represent the previous election.
Tips
You can adjust the number of seats in the parliament chart to your liking. By default, the number of seats is at 650, but you can change it to 435 seats, for example, if you're making a chart about US parliament seating.
Tweak the colours with the Automatic colour scheme, or change the colour for one party, or all the parties with the Custom party colours.
You can add/remove the table, the legend, the buttons, the animation.
Credits
Created by the Flourish team. Want to see additional features? Let us know at support@flourish.studio.
API information
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/parliament-chart
version: 5
Template data
There are three different formats in which you can supply data to this template. The most convenient for you to use likely depends on the source of your data, as described below.
1. Array of arrays, and a bindings object
You can supply arrays of arrays to opts.data, which might look
like:
{
data: {
data: [
[ "DataColumn1Value1", "DataColumn2Value1",
[ "DataColumn1Value2", "DataColumn2Value2",
[ "DataColumn1Value3", "DataColumn2Value3",
...
]
}
}
where each array of arrays represents the rows in a data sheet.
To tell the API how the 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/parliament-chart",
version: "5",
bindings: {
data: {
party: 0, // index of a column in your data
}
},
data: {
data: [
[ "DataColumn1Value1", "DataColumn2Value1",
[ "DataColumn1Value2", "DataColumn2Value2",
[ "DataColumn1Value3", "DataColumn2Value3",
...
]
}
}
All possible bindings that you can supply are shown in this example:
{
template: "@flourish/parliament-chart",
version: "5",
bindings: {
data: {
party: 0, // index of a column in your data
seats: [1, 2, ...], // index(es) of column(s) in your data
}
},
data: {
data: [
[ "DataColumn1Value1", "DataColumn2Value1",
[ "DataColumn1Value2", "DataColumn2Value2",
[ "DataColumn1Value3", "DataColumn2Value3",
...
]
}
}
2. 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:
{
data: [
{ "DataHeader1": ..., "DataHeader2": ..., ... },
{ "DataHeader1": ..., "DataHeader2": ..., ... },
{ "DataHeader1": ..., "DataHeader2": ..., ... },
...
]
}
... but with the keys being the column headers from your
source data instead. You must also supply an object attached to
opts.bindings. The minimal bindings you can
supply for this template are as shown in this example:
{
template: "@flourish/parliament-chart",
version: "5",
bindings: {
data: {
party: "DataHeader1",
}
},
data: {
data: [
{ "DataHeader1": ..., "DataHeader2": ..., ... },
{ "DataHeader1": ..., "DataHeader2": ..., ... },
{ "DataHeader1": ..., "DataHeader2": ..., ... },
...
]
}
}
All possible bindings that you can supply are shown in this example:
{
template: "@flourish/parliament-chart",
version: "5",
bindings: {
data: {
party: "DataHeader1",
seats: ["DataHeader2", "DataHeader3", ...],
}
},
data: {
data: [
{ "DataHeader1": ..., "DataHeader2": ..., ... },
{ "DataHeader1": ..., "DataHeader2": ..., ... },
{ "DataHeader1": ..., "DataHeader2": ..., ... },
...
]
}
}
(As before, the keys containing "Header" would be replaced by column names from your data source.)
3. 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/parliament-chart",
version: "5",
data: {
data: [
{
party: ...,
seats: [...]
},
...
]
},
...
}
And the full list of all possible properties is as follows:
{
template: "@flourish/parliament-chart",
version: "5",
data: {
data: [
{
party: ...,
seats: [...]
},
...
]
},
...
}
Meanings of the template data keys:
- data.party: party
- data.seats: This should point to the column with election data
Template settings
Options for opts.state.
Parliament layout
num_of_seats number
Number of seats. This number is ignored if the value is lower than the actual number of seats in your data Min: 1 Max: 40000
hemicycle_arc number
Size of arc. In degrees Min: 10 Max: 360
circle_inner number
Inner space. As a % of the circle Max: 90
manual_row_count boolean
Number of rows. Allowed values:
num_of_rows number
Rows. Min: 1
use_hover_animation boolean
Highlight parties on hover.
Colours
color.scale_type string
Scale type. Allowed values:
color.categorical_type string
Allowed values:
- palette (Palette)
- generated (Generated)
color.categorical_palette colors
Palette.
color.categorical_extend boolean
Auto-extend. Automatically generate additional colours when needed to avoid the palette colours being used more than once.
color.categorical_seed_color color
Seed color. Initial color in generated sequence (avoid shades of grey).
color.categorical_rotation_angle number
Hue rotation angle. Angle, in degrees, between one generated colour and the next. The default value, ~360/(Golden ratio), ensures adjacent hues are not too similar. Max: 360
color.categorical_color_space string
Allowed values:
- hcl (HCL)
- hsl (HSL)
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:
Party 1: red
Party 2: #4455AA
Party 3: rgb(30,168,26)
color.sequential_palette string
Palette. Allowed values:
color.sequential_custom_min color
Minimum color.
color.sequential_custom_max color
Maximum color.
color.sequential_color_space string
Allowed values:
- rgb (RGB)
- lab (LAB)
- hcl (HCL)
- hsl (HSL)
color.sequential_reverse boolean
Reverse scale.
color.diverging_palette string
Palette. Allowed values:
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
Allowed values:
- rgb (RGB)
- lab (LAB)
- hcl (HCL)
- hsl (HSL)
color.diverging_reverse boolean
Reverse scale.
unassigned_color color
Unassigned outline color.
Legend
legend.show_legend boolean
Allowed values:
- true (Enabled)
- false (Disabled)
legend.text_color color
Color.
legend.text_size number
Size.
legend.title_mode string
Title mode. Allowed values:
legend.title string
Title.
legend.title_weight string
Weight. Allowed values:
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:
legend_hide_empty_parties boolean
Don't include parties that don't have any seats.
Table
show_table boolean
Show table.
gain_color color
Gain color.
loss_color color
Loss color.
default_text_color color
Default color.
header_weight string
Header text. Allowed values:
margin_table number
Margin.
show_seat_change string
This adds a new column that shows the change between 2 columns. "Auto" will compare the last 2 columns in your data "Custom" will allow you to handpick 2 columns to compare Allowed values:
seat_change_before string
Seat change before. Add the name of the column you want to compare with
seat_change_after string
Seat change after. Add the name of the column you want to compare with
seat_change_label string
Column name.
seat_format.prefix string
Prefix. Text to place in front of number
seat_format.suffix string
Suffix. Text to place after number
seat_format.n_dec number
Decimal places. Use negative integers to round to positive powers of ten (eg -2 rounds to the nearest 100) Min: -10 Max: 10
seat_format.advanced boolean
Advanced.
seat_format.negative_sign string
Styling of negative numbers. Allowed values:
seat_format.strip_zeros boolean
Remove trailing zeros.
seat_format.strip_separator boolean
Hide thousands separator below 10,000. Turn off if you want four-digit numbers to include a separator, e.g. “1,234” rather than “1234”.
seat_format.transform_labels boolean
Multiply/divide values.
seat_format.transform string
Allowed values:
- multiply (Multiply by)
- divide (Divide by)
- exponentiate (×10 to the power of)
seat_format.multiply_divide_constant number
seat_format.exponentiate_constant number
Animations
animation_duration number
Animation duration. How long the seats take to "flip" when changing party, in seconds
animation_stagger number
Animation spread. How many seconds to spread the seat animations across
animate_on_load boolean
Animate on load. Whether to animate the seats when the visualisations first loads
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:
Page
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:
layout.background_image_enabled boolean
Image. Allowed values:
layout.background_color color
Background color.
layout.background_image_src url
Image URL.
layout.background_image_size string
Size. Allowed values:
layout.background_image_position string
Position. Allowed values:
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:
layout.max_width number
Maximum width. Leave blank to stretch to container width Min: 50
layout.max_width_align string
Align. Allowed values:
layout.layout_order string
Layout order. Allowed values:
layout.space_between_sections string
Space between sections. Allowed values:
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:
layout.border.top.color color
Color.
layout.border.right.width number
Right.
layout.border.right.style string
Style. Allowed values:
layout.border.right.color color
Color.
layout.border.bottom.width number
Bottom.
layout.border.bottom.style string
Style. Allowed values:
layout.border.bottom.color color
Color.
layout.border.left.width number
Left.
layout.border.left.style string
Style. Allowed values:
layout.border.left.color color
Color.
Header
layout.header_align string
Alignment. Allowed values:
layout.title string
layout.title_styling boolean
Change title styles.
layout.title_font font
Title Font.
layout.title_size string
Size. Allowed values:
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:
layout.title_color color
Color.
layout.title_line_height number
Line height. Max: 3
layout.title_space_above string
Space above. Allowed values:
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:
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:
layout.subtitle_color color
Color.
layout.subtitle_line_height number
Line height. Max: 3
layout.subtitle_space_above string
Space above. Allowed values:
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:
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:
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:
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:
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:
layout.header_logo_position_inside string
Position. Allowed values:
layout.header_logo_position_outside string
Position. Allowed values:
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.
Footer
layout.footer_align string
Alignment. Allowed values:
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:
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
layout.footer_logo_link_url string
Link.
layout.footer_logo_height number
Height.
layout.footer_logo_margin number
Margin.
layout.footer_logo_order string
Position. Allowed values:
layout.footer_align_vertical string
V. align. Allowed values:
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:
layout.footer_border_space number
Space. Space between border and footer text
