Components / Charts / API

CategoryAxis

The configuration options of the category axis.

autoBaseUnitSteps? AutoBaseUnitSteps

The time-interval steps when baseUnit is set either to "fit" or "auto".
The axis will try to divide the active period into the smallest possible units
that yield maxDateGroups or less discrete intervals.

axisCrossingValue? any | any[]

The category index or the date (for date category axis) at which the first value axis crosses this axis.
The category indices or the date (for date category axis) at which the value axes cross the category axis (when set as an array).
To denote the far end of the axis, set an index greater than or equal to the number of categories.

background? string

The background color of the axis.

baseUnit? CategoryBaseUnit

The base time interval for the date axis. The default base unit is automatically determined by the
minimum difference between subsequent categories.

The supported values are:

"fit"
"milliseconds"
"seconds"
"minutes"
"hours"
"days"
"weeks"
"months"
"years"

Setting baseUnit to "fit" sets such a base unit and categoryAxis.baseUnitStep
that the total number of categories does not exceed categoryAxis.maxDateGroups.

Series data is aggregated for the specified base unit by using the series.aggregate function.

baseUnitStep? number | "auto"

The step (interval) between the categories in base units. Setting it to "auto" sets the step to such
a value that the total number of categories does not exceed categoryAxis.maxDateGroups.
The option is ignored if categoryAxis.baseUnit is set to "fit".

categories? any[]

The category names. The Chart creates a category for every item of the array.

color? string

The color to apply to all axis elements. Accepts a valid CSS color string, including hex and rgb.
Can be overridden by categoryAxis.labels.color and categoryAxis.line.color.

crosshair? CategoryAxisCrosshair

The configuration options of the crosshair.
The crosshair is displayed when the categoryAxis.crosshair.visible option is set to true.

justified? boolean

If set to true, the Chart positions categories and series points on major ticks.
This removes the empty space before and after the series.
The default value is false except for "area", "verticalArea", "rangeArea", and "verticalRangeArea".
The option is ignored if the series.type option is set to "bar", "column", "boxPlot", "ohlc",
"candlestick", or "waterfall".

labels? CategoryAxisLabels

The configuration of the axis labels.

line? AxisLine

The configuration of the axis lines. Also affects the major and minor ticks, but not the grid lines.

majorGridLines? GridLines

The configuration of the major grid lines.
These are the lines that are an extension of the major ticks through the body of the Chart.

majorTicks? AxisTicks

The configuration of the category axis major ticks.

max? any

The last date displayed on a date category axis or the index of the last category displayed on a category axis.
By default, the max value is the same as the last category.
This is often used in combination with the categoryAxis.min and
categoryAxis.roundToBaseUnit options to set up a fixed date range.

maxDateGroups? number

The maximum number of groups (categories) to display when
categoryAxis.baseUnit is set to "fit" or
categoryAxis.baseUnitStep is set to "auto".

maxDivisions? number

The maximum number of ticks and labels to display. Applicabable for date category axis.

min? any

The first date which is displayed on a date category axis or the index of the first category whcih is displayed on a category axis.
By default, the min value is the same as the first category.
This is often used in combination with the categoryAxis.max and
categoryAxis.roundToBaseUnit options to set up a fixed date range.

minorGridLines? GridLines

The configuration of the minor grid lines.
These are the lines that are an extension of the minor ticks through the body of the Chart.

minorTicks? AxisTicks

The configuration of the category axis minor ticks.

name? string

The unique axis name. Used to associate a series with a category axis,
which utilizes the series.categoryAxis option.

notes? CategoryAxisNotes

The configuration of the category axis notes.

pane? string

The name of the pane in which the category axis has to be rendered.
If not set, the axis will be rendered in the first (default) pane.

plotBands? PlotBand[]

The plot bands of the category axis.

reverse? boolean

If set to true, the category axis direction is reversed.
By default, categories are listed from left to right and from bottom to top.

roundToBaseUnit? boolean

If set to true, the Chart rounds the first and last date to the nearest base unit.

select? CategoryAxisSelect

The selected axis range. If set, the axis selection is enabled.
The range is index-based, starting from zero.
Categories with indexes in the range (select.from, select.to) will be selected.
That is, the last category in the range will not be included in the selection.
If the categories are dates, the range has to be also specified with date values.
Selection is only supported if the axis is horizontal.

startAngle? number

The angle (degrees) of the first category on the axis.
Angles increase clockwise with zero to the left. Negative values are acceptable.

title? CategoryAxisTitle

The title configuration of the category axis.
To display the title, set the categoryAxis.title.text option.

type? "category" | "date"

The category axis type.