Bar chart race
Updated 6 years ago to v2.4.0 by Flourish team
How to use this template
What's it for?
Use this template to visualise the changing fortunes of people or groups in competition with each other, like political candidates, country populations or football teams.
How to get started
- The first thing you need is a CSV or Excel file of your data.
- You need to make sure that there’s a row for each participant in the race – like a candidate or a football team. Use the first column to populate with the participants’ names. Each other column is a “stage” of the race – like a specific date, week or years.
- Here's an example:
name Day 1 Day 2 Day 3 Lance Armstrong 0 4 7 Chris Hoyle 0 3 6
Not sure how to upload your data to Flourish? See our handy guide
Credits
Bar chart template: Created by the Flourish team. Want to see additional features? Let us know at support@flourish.studio.
Data: The sample data used in this template derives from 22 million birth records transcribed by the volunteer UK Local BMD project, across seven geographically diverse counties. The data for each name is the percentage of all births in that year for which it is recorded. Data compiled by Dr Stephen Bush and Professor Tom Freeman of the University of Edinburgh: see the pre-print paper for trends and network effects in the data.
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/bar-chart-race
version: 2
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/bar-chart-race",
version: "2",
bindings: {
data: {
label: 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/bar-chart-race",
version: "2",
bindings: {
data: {
label: 0, // index of a column in your data
values: [1, 2, ...], // index(es) of column(s) in your data
category: 3, // index of a column 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/bar-chart-race",
version: "2",
bindings: {
data: {
label: "DataHeader1",
}
},
data: {
data: [
{ "DataHeader1": ..., "DataHeader2": ..., ... },
{ "DataHeader1": ..., "DataHeader2": ..., ... },
{ "DataHeader1": ..., "DataHeader2": ..., ... },
...
]
}
}
All possible bindings that you can supply are shown in this example:
{
template: "@flourish/bar-chart-race",
version: "2",
bindings: {
data: {
label: "DataHeader1",
values: ["DataHeader2", "DataHeader3", ...],
category: "DataHeader4",
}
},
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/bar-chart-race",
version: "2",
data: {
data: [
{
label: ...,
values: [...]
},
...
]
},
...
}
And the full list of all possible properties is as follows:
{
template: "@flourish/bar-chart-race",
version: "2",
data: {
data: [
{
label: ...,
values: [...],
category: ...
},
...
]
},
...
}
Meanings of the template data keys:
- data.label: A column containing the names of the bars, e.g. countries or people
- data.values: Multiple columns of numbers, each column representing a point in time
- data.category: category
Template settings
Options for opts.state.
Bars
number_of_bars number
Number of bars. How many bars to show Min: 1
bar_margin number
Bar margin (%). Margin between bars, as a percent of the total space available for each bar Max: 99
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.
bar_opacity number
Bar opacity. Max: 1
padding_top number
Top.
padding_right number
Right.
padding_bottom number
Bottom.
padding_left number
Left.
Labels
label_max_size number
Max font size.
label_color_in color
Label colour.
label_color_out color
Value colour.
label_mode string
Labels mode. Allowed values:
label_axis_width number
Space for labels.
counter_font_size number
Size (% of screen).
counter_color color
Colour.
Legend
show_legend boolean
Legend. Allowed values:
color
Label colour.
text_legend string
Allowed values:
- auto (Auto)
- custom (Custom)
- off (Off)
text_legend_title boolean
Title.
text_legend_subtitle boolean
Subtitle.
text_legend_bold boolean
Bold. If checked, always use bold for coloured items
Axis
axis_color color
Color.
axis_text_color color
Text color.
scale_type string
Type. Allowed values:
scale_max number
Max.
Animation
animation_duration number
Animation duration. The duration in seconds of each time step
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:
value_format.prefix string
Prefix. Text to place in front of number
value_format.suffix string
Suffix. Text to place after number
value_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
value_format.strip_zeros boolean
Remove trailing zeros.
value_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”.
value_format.transform_labels boolean
Multiply/divide values.
value_format.transform string
Allowed values:
- multiply (Multiply by)
- divide (Divide by)
- exponentiate (×10 to the power of)
value_format.multiply_divide_constant number
value_format.exponentiate_constant number
Layout
layout.body_font font
Font.
layout.max_width number
Maximum width. Leave blank to stretch to container width Min: 50
layout.background_color color
Background.
layout.margin number
Margin.
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
Header
layout.header_align string
Alignment. Allowed values:
layout.title string
layout.title_styling boolean
Change title styles.
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.subtitle string
layout.subtitle_styling boolean
Change subtitle styles.
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.text string
layout.text_styling boolean
Change text styles.
layout.text_size string
Size. Allowed values:
layout.text_size_custom number
Custom. Specify a custom responsive font size. Best results will be with values between 1.2 and 3
layout.text_weight string
Weight. Allowed values:
layout.text_color color
Color.
layout.text_line_height number
Line height. Max: 3
layout.text_space_above string
Space above. Allowed values:
layout.text_space_above_custom number
Custom. Max: 100
Footer
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.note string
Note.
layout.size number
Size.
layout.color color
Color.
layout.footer_align string
Alignment. Allowed values:
layout.logo_url url
Image.
layout.logo_link_url string
Link.
layout.logo_height number
Height.
layout.logo_margin number
Margin.
layout.logo_order string
Position. Allowed values:
layout.footer_align_vertical string
V. align. Allowed values:
