Home components bar chart

Bar Chart

bar

	

		
		

<BarChart 
    data={query_name} 
    x=column_x 
    y=column_y
/>

Examples

Bar

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<BarChart 
    data={value_by_region} 
    x=region
    y=value 
    xAxisTitle=Region
/>

Horizontal Bar

bar

	

		
		

<BarChart 
    data={value_by_region}
    x=country 
    y=value 
    swapXY=true
/>

Stacked Bar

bar

	

		
		

<BarChart 
    data={annual_value_by_region} 
    x=year 
    y=value 
    series=region
/>

Stacked Bar with Value Labels

	

		
		

<BarChart 
    data={annual_value_by_region} 
    x=year 
    y=value 
    series=region
    labels=true
    labelFmt=usd0k
/>

100% Stacked Bar

bar

	

		
		

<BarChart 
    data={annual_value_by_region} 
    x=year 
    y=value 
    series=region
    type=stacked100
/>

Horizontal Stacked Bar

bar

	

		
		

<BarChart 
    data={annual_value_by_region} 
    swapXY=true 
    x=year 
    y=value 
    series=region 
    xType=category 
    sort=false
/>

Horizontal 100% Stacked Bar

bar

	

		
		

<BarChart 
    data={annual_value_by_region} 
    swapXY=true 
    x=year 
    y=value 
    series=region 
    type=stacked100
    xType=category 
    sort=false
/>

Grouped Bar

bar

	

		
		

<BarChart 
    data={annual_value_by_region} 
    x=year 
    y=value 
    series=region 
    type=grouped
/>

Horizontal Grouped Bar

bar

	

		
		

<BarChart 
    data={annual_value_by_region} 
    swapXY=true 
    x=year 
    y=value 
    series=region 
    type=grouped 
    xType=category
/>

Custom Color Palette

	

		
		

<BarChart 
    data={orders_by_month} 
    x=month 
    y=sales 
    series=category 
    colorPalette={
        [
        '#cf0d06',
        '#eb5752',
        '#e88a87',
        '#fcdad9',
        ]
    }
/>

Long Bar Chart

If you create a bar chart with many x-axis items (e.g., names of departments), Evidence will extend the height of the chart for you to avoid the bars becoming squished. See Long Bar example below.

long-bar

	

		
		

<BarChart 
    data={complaints_by_category} 
    x=category 
    y=complaints 
    swapXY=true 
    yAxisTitle="Calls Received" 
/>

Secondary y Axis

	

		
		

<BarChart 
    data={orders_by_month} 
    x=month 
    y=sales_usd0k 
    y2=num_orders_num0
/>

Secondary Axis with Line

	

		
		

<BarChart
    data={orders_by_month} 
    x=month 
    y=sales_usd0k 
    y2=num_orders_num0 
    y2SeriesType=line 
    colorPalette={['rgb(110,117,176,0.8)','rgb(37,91,161)']}
/>

Options

Data

data
REQUIRED
Query name, wrapped in curly braces
Options:
query name
x
Column to use for the x-axis of the chart
Options:
column name
Default:
First column
y
Column(s) to use for the y-axis of the chart
Options:
column name | array of column names
Default:
Any non-assigned numeric columns
y2
Column(s) to include on a secondary y-axis
Options:
column name | array of column names
y2SeriesType
Chart type to apply to the series on the y2 axis
Options:
Default:
bar
series
Column to use as the series (groups) in a multi-series chart
Options:
column name
sort
Whether to apply default sort to your data. Default sort is x ascending for number and date x-axes, and y descending for category x-axes
Options:
Default:
true
type
Grouping method to use for multi-series charts
Options:
Default:
stacked
stackName
Name for an individual stack. If separate Bar components are used with different stackNames, the chart will show multiple stacks
Options:
string
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

Formatting & Styling

xFmt
Format to use for x column (see available formats)
Options:
Excel-style format | built-in format name | custom format name
yFmt
Options:
Excel-style format | built-in format name | custom format name
y2Fmt
Options:
Excel-style format | built-in format name | custom format name
fillColor
Color to override default series color. Only accepts a single color.
Options:
CSS name | hexademical | RGB | HSL
fillOpacity
% of the full color that should be rendered, with remainder being transparent
Options:
number (0 to 1)
Default:
1
outlineWidth
Width of line surrounding each bar
Options:
number
Default:
0
outlineColor
Color to use for outline if outlineWidth > 0
Options:
CSS name | hexademical | RGB | HSL
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
seriesColors
Apply a specific color to each series in your chart. Unspecified series will receive colors from the built-in palette as normal. Note the double curly braces required in the syntax
Options:
object with series names and assigned colors
Default:
colors applied by order of series in data

Value Labels

labels
Show value labels
Options:
Default:
false
stackTotalLabel
Whether to show a total at the top of stacked bar chart
Options:
Default:
true
labelSize
Font size of value labels
Options:
number
Default:
11
labelPosition
Where label will appear on your series
Options:
Default:
Single Series: outside, Stacked: inside, Grouped: outside
labelColor
Font color of value labels
Options:
CSS name | hexademical | RGB | HSL
Default:
Automatic based on color contrast of background
labelFmt
Format to use for value labels (see available formats)
Options:
Excel-style format | built-in format name | custom format name
Default:
same as y column
yLabelFmt
Options:
Excel-style format | built-in format name | custom format name
y2LabelFmt
Options:
Excel-style format | built-in format name | custom format name
showAllLabels
Allow all labels to appear on chart, including overlapping labels
Options:
Default:
false

Axes

swapXY
Swap the x and y axes to create a horizontal chart
Options:
Default:
false
yLog
Whether to use a log scale for the y-axis
Options:
Default:
false
yLogBase
Base to use when log scale is enabled
Options:
number
Default:
10
xAxisTitle
Name to show under x-axis. If 'true', formatted column name is used. Only works with swapXY=false
Options:
Default:
false
yAxisTitle
Name to show beside y-axis. If 'true', formatted column name is used.
Options:
Default:
false
y2AxisTitle
Name to show beside y2 axis. If 'true', formatted column name is used.
Options:
Default:
false
xGridlines
Turns on/off gridlines extending from x-axis tick marks (vertical lines when swapXY=false)
Options:
Default:
false
yGridlines
Turns on/off gridlines extending from y-axis tick marks (horizontal lines when swapXY=false)
Options:
Default:
true
y2Gridlines
Turns on/off gridlines extending from y2-axis tick marks (horizontal lines when swapXY=false)
Options:
Default:
true
xAxisLabels
Turns on/off value labels on the x-axis
Options:
Default:
true
yAxisLabels
Turns on/off value labels on the y-axis
Options:
Default:
true
y2AxisLabels
Turns on/off value labels on the y2-axis
Options:
Default:
true
xBaseline
Turns on/off thick axis line (line appears at y=0)
Options:
Default:
true
yBaseline
Turns on/off thick axis line (line appears directly alongside the y-axis labels)
Options:
Default:
false
y2Baseline
Turns on/off thick axis line (line appears directly alongside the y2-axis labels)
Options:
Default:
false
xTickMarks
Turns on/off tick marks for each of the x-axis labels
Options:
Default:
false
yTickMarks
Turns on/off tick marks for each of the y-axis labels
Options:
Default:
false
y2TickMarks
Turns on/off tick marks for each of the y2-axis labels
Options:
Default:
false
yMin
Starting value for the y-axis
Options:
number
yMax
Maximum value for the y-axis
Options:
number
yScale
Whether to scale the y-axis to fit your data. `yMin` and `yMax` take precedence over `yScale`
Options:
Default:
false
y2Min
Starting value for the y2-axis
Options:
number
y2Max
Maximum value for the y2-axis
Options:
number
y2Scale
Whether to scale the y-axis to fit your data. `y2Min` and `y2Max` take precedence over `y2Scale`
Options:
Default:
false
showAllXAxisLabels
Force every x-axis value to be shown. This can truncate labels if there are too many.
Options:
Default:
false
yAxisColor
Turns on/off color on the y-axis (turned on by default when secondary y-axis is used). Can also be used to set a specific color
Options:
Default:
true when y2 used; false otherwise

Chart

title
Chart title. Appears at top left of chart.
Options:
string
subtitle
Chart subtitle. Appears just under title.
Options:
string
legend
Turns legend on or off. Legend appears at top center of chart.
Options:
Default:
true for multiple series
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
renderer
Which chart renderer type (canvas or SVG) to use. See ECharts' documentation on renderers.
Options:
Default:
canvas

Custom Echarts Options

echartsOptions
Custom Echarts options to override the default options. See reference page for available options.
Options:
{{exampleOption:'exampleValue'}}
seriesOptions
Custom Echarts options to override the default options for all series in the chart. This loops through the series to apply the settings rather than having to specify every series manually using `echartsOptions` See reference page for available options.
Options:
{{exampleSeriesOption:'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

Interactivity

connectGroup
Group name to connect this chart to other charts for synchronized tooltip hovering. Charts with the same `connectGroup` name will become connected

Annotations

Bar charts can include annotations using the ReferenceLine and ReferenceArea components. These components are used within a chart component like so:

	

		
		

<BarChart data={sales_data} x=date y=sales>
  <ReferenceLine data={target_data} y=target label=name/>
  <ReferenceArea xMin='2020-03-14' xMax='2020-05-01'/>
</BarChart>