Radar Charts Only: The scaleK object is similar to the scaleX object on x/y-axis charts. (The scaleV object is the radar chart’s scaleY equivalent.) Named the key scale, it wraps around the chart on a circular axis and generally displays variables/factors as its scale values. Refer to the Radar Charts Tutorial for more information.

Attribute	Type	Description
anchor	String	Allows you to set an object's anchor position Accepted Values: ['tl', 'tr', 'bl', 'br', 'c', 't', 'r', 'b', 'l'] Default Value: 'tl'
aspect	String	Sets the aspect of the `series` data points in the chart. Accepted Values: ['star', 'circle'] Default Value: 'star' Chart types: Radar
blended	Boolean	To 'blend' or 'stick' secondary scales to the primary one. Use with the 'placement' attribute (set the value to 'default') and 'offset-start' and 'offset-end' attributes. Default Value: false Introduced in: v2.3.0
borderRadius border-radius	Number	Sets the object's border radius for rounded corners. Larger values create rounder corners, while smaller values create sharper corners. A single value will affect all 4 corners; multiple values will have separate effects on each corner, with the first value affecting the top-left corner, the second value affecting the top-right corner, and so on, in a clockwise direction. A negative value will cut a corner off without rounding. Default Value: 0
borderRadiusBottomLeft border-radius-bottom-left	Number	Sets the object's bottom-left border radius for rounded corners. Larger values create rounder corners, while smaller values create sharper corners. A negative value will cut a corner off without rounding. Default Value: 0
borderRadiusBottomRight border-radius-bottom-right	Number	Sets the object's bottom-right border radius for rounded corners. Larger values create rounder corners, while smaller values create sharper corners. A negative value will cut a corner off without rounding. Default Value: 0
borderRadiusTopLeft border-radius-top-left	Number	Sets the object's top-left border radius for rounded corners. Larger values create rounder corners, while smaller values create sharper corners. A negative value will cut a corner off without rounding. Default Value: 0
borderRadiusTopRight border-radius-top-right	Number	Sets the object's top-right border radius for rounded corners. Larger values create rounder corners, while smaller values create sharper corners. A negative value will cut a corner off without rounding. Default Value: 0
class	String	Sets a class value on the object. Default Value: null
dataN data-n	Any	Prefix attribute or array using "data-" to define a custom token.
decimals	Number	Sets the number of decimal places displayed for each value. Default Value: -1 Chart types: Gauge
decimalsSeparator decimals-separator	String	Sets the separator to be used in place of the default decimal point. Any string or character can be used to replace the decimal. Default Value: '.' Chart types: Gauge
defaultValue default-value	String	Sets the default value token values to display until the value is available. Default Value: null Chart types: Gauge
exponent	Boolean	Sets whether the scale values will be displayed in scientific notation. Particularly useful when dealing with large numbers. Default Value: false Chart types: Gauge
exponentDecimals exponent-decimals	Number	Sets the number of decimals that will be displayed when using scientific notation. Use with the 'exponent' attribute. Default Value: 2 Chart types: Gauge
flat	Boolean	Set to true disables the chart interactivity. Default Value: false
format	String	To format the appearance of the scale values. Use with the %scale-value (%v) token. Default Value: null Chart types: Gauge
guide	Object	Used to style the lines and backgrounds behind the plotted data. Default Value: null
id	String	Sets the id of the object. Default Value: ''
item	Object	Sets the id or style of the item. Default Value: {} Chart types: Gauge,Radar
itemsOverlap items-overlap	Boolean	To force all of the scale items to display. It is generally used with the 'max-items' attribute. Default Value: false
labels	Array.<Number,String>	Sets the labels. Chart types: Gauge
logBase log-base	Number	Logarithmic Scales only: To set the base value, which defaults to Math.E (Euler's number, the base of natural logarithms). Default Value: 10
master	String	Sets a master scale. The current scale will always be in sync with it's master scale. Default Value: ''
max-value-factor	Boolean	Ratio from (max-min) interval which will be added to the max value. Default Value: true
maxDecimals max-decimals	Number	Sets the max number of decimals that will be used to format the values. Default Value: -1 Chart types: Gauge
maxItems max-items	Number	Sets the maximum number of items displayed. Chart types: Gauge
maxTicks max-ticks	Number	Sets the maximum number of ticks to display on the scale. Chart types: Gauge
mediaRules media-rules	Array.<Object>	Configure media rules.
min-value-factor	Boolean	Ratio from (max-min) interval which will be subtracted to the min value. Default Value: true
negation	String	This attribute will determine how negative values are handled. When using "format":"$%v" setting "negation":"currency" will move the - symbol to the outside of the $ sign. When using "negation" within the "plot": { } object you will see changes in things such as tooltips or anywhere else series data is used to populate values. You need to set "negation" in things such as "scale-y": { } separately. Accepted Values: ['standard', 'currency'] Default Value: 'standard'
progression	String	To change the scale type from linear (default) to logarithmic. Accepted Values: ['lin', 'linear', 'log'] Default Value: 'lin'
ranged	Boolean	Sets the scale as "ranged", basically the node is placed in the middle of the interval between two scale values. Default Value: false
rectShortcut rect-shortcut	Boolean	Used to force the library to create rectangles using a faster drawing API (instead of painting them like a closed polygon). However, using this would disable effects like rounded borders. It is a performance setting for edge cases. Default Value: false
short	Boolean	Automatically shortens large units (e.g. 1000000 -> 1M) Default Value: false Chart types: Gauge
shortUnit short-unit	String	Specifies which unit of measure to use when `short` is set to true. Accepted Values: ['k', 'K', 'm', 'M', 'b', 'B'] Default Value: '' Chart types: Gauge
showLabels show-labels	Array.<String>	Sets a filter to show only specific items on a scale. It does NOT force the display of the specified items if those are not already generated by the scale. Default Value: null Chart types: Gauge
step	Number	The 'step': attribute sets the value of each step along an axis. When using numeric values along the axis, a numeric value for 'step': will incrementally increase the value of each tick along the axis by the specified step value. When the transform attribute is set to 'type':'date', a number of different step values can then be used to modify the step increments. Accepted Values: [`${number}`, `${number\|''}second`, `${number\|''}minute`, `${number\|''}hour`, `${number\|''}day`, `${number\|''}week`, `${number\|''}month`, `${number\|''}year`] Default Value: 1 Chart types: Gauge
stepMultiplier step-multiplier	Number	Applies a multiplier to the interval used to show ticks/items on scale. The multiplier is not applied only if the number of items currently active is greater than the multiplier value. Otherwise, all items are being displayed. Introduced in: v2.9.1
thousandsSeparator thousands-separator	String	Sets the character used to separate thousands. Default Value: ''
tick	Object	Used to style the scale tick marks. Default Value: null
tooltip	Object	Configures the tooltip element, which appears when hovering over an object. Chart types: Gauge
transform	Object	Transforms data to specified format. For example, if data is coded as date and time, `type: 'date'` is specifed in this object, and `scaleX.transform: '%D, %d %M %h:%i %A'` is set, then '1311261385209' will display 'Wed, 19 of May 05:00 PM'. Default Value: null Chart types: Gauge
used	Boolean	Forces the display of the scale, even if its not used on any plot. Default Value: false
values	Array.<Number,String>, Number, String	Sets the scale values. Default Value: []
visible	Boolean	Sets the visibility of the object. Allows you to turn off the object without removing lines of JSON. Default Value: true
zIndex z-index	Number	Sets the z position of the object. Objects with higher z indexes will appear "above" those with lower z index values. Default Value: 1