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Histogram

Use histograms to display the distribution of a metric along a continuous range, aggregated into buckets.

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Examples

Histogram

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Options

Data

data
Required

Query name, wrapped in curly braces

Options:
query name
x
Required

Column which contains the data you want to summarize

Options:
column name
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
fillColor

Color to override default series 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
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
leftPadding
Number representing the padding (whitespace) on the left side of the chart. Useful to avoid labels getting cut off
Options:
number
rightPadding
Number representing the padding (whitespace) on the left side of the chart. Useful to avoid labels getting cut off
Options:
number
xLabelWrap
Whether to wrap x-axis labels when there is not enough space. Default behaviour is to truncate the labels.
Options:
Default:
false

Axes

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
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
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
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
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
yMin

Starting value for the y-axis

Options:
number
yMax

Maximum value for the y-axis

Options:
number

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
downloadableData
Whether to show the download button to allow users to download the data
Options:
Default:
true
downloadableImage
Whether to show the button to allow users to save the chart as an image
Options:
Default:
true

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

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

<Histogram data={sales_data} x=category>
  <ReferenceLine y=20/>
  <ReferenceArea xMin=3 xMax=8/>
</Histogram>
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