Formatting the Axis Labels

axisname: {
  labels: {
    visible: boolean,
    font: 'string',
    color: 'string',
    excludeMin: boolean,
    excludeMax: boolean,
    nestingConcatSymbol: 'string'  
    nestingLineStyle: {
            width: number,
            color: 'string',
            dash: 'string'       
             }
    rotation: number  }
}

where:

axisname

Can be:

• xaxis
• yaxis
• y2axis
• zaxis

visible: boolean

Controls the visibility of the axis labels. Valid values are:

• true, which makes the axis labels visible. This is the default value.
• false, which makes the axis labels not visible.

font: 'string'

Is a string that defines the size, style, and typeface of the axis labels. The default value is '7.5pt Sans-Serif'.

color: 'string'

Is a string that defines color of the axis labels using a color name or numeric specification string. The default value is 'black'.

For information about defining colors, see Colors and Gradients.

excludeMin: boolean

Controls the visibility of the label for the minimum value. Valid values are:

• true, which makes the minimum label not visible.
• false, which makes the minimum label visible. This is the default value.
• 'auto', which lets the chart engine control whether to draw the minimum label. It will not draw the label if it is too close to or overlaps another label.

excludeMax: boolean

Controls the visibility of the label for the maximum value. Valid values are:

• true, which makes the maximum label not visible.
• false, which makes the maximum label visible. This is the default value.
• 'auto', which lets the chart engine control whether to draw the maximum label. It will not draw the label if it is too close to or overlaps another label.

nestingConcatSymbol: 'string'

Controls the generation of nested x-axis labels when multiple hierarchical sort fields are assigned to the x-axis.

By assigning multiple sort fields to the x-axis, you can create two different effects (layouts). The x-axis will be drawn with either a nested layout, where the hierarchy of the sorts is presented on the x-axis, or a concatenated layout, where each label contains its fully qualified sort path, separated by a concatenation symbol.

If this property is not set, or is set to null (the default value) or undefined, nested x-axis labels are generated. If this property is set to a string (for example, ':'), the x-axis labels are concatenated, with the specified string placed between the sort field values.

nestingLineStyle:

Controls the style of the line connecting the nested groups.

width: number

Is the width of the line in pixels. The default value is 1.

color: 'string'

Is a color specification string that defines the color of the line. The default value is 'black'.

dash: 'string'

Is a string that defines the dash style. The default value is '' (which generates a solid line). Use a string of numbers that defines the width of a dash in pixels followed by the width of the gap between dashes in pixels (for example, dash: '1 1' draws a dotted line).

rotation: number

Defines the rotation of axis labels, in degrees. Valid values are 0 (no rotation), 45, 90, 135, 180, 270, or undefined. The default value is undefined. Any value other than undefined will disable automatic layout of axis labels. For information, see Controlling Automatic Layout of Ordinal Axis Labels.