It returns a number or a Date object (for time-based data).

It returns a number or a Date object (for time-based data).

The default value for this property is true.

The first name specifies the value on the axis, the second represents the corresponding axis label. The default value is 'value,text'.

Label groups are created by modifying the ICollectionView.groupDescriptions property of the ICollectionView object used as an FlexChart.itemsSource.

The default value is null and the axis label groups are not displayed.

To display groups you should create groups in collection view and specify the groupsOptions for the axis.

For example,

 let view = new CollectionView( getData(), {
    groupDescriptions: [
      new PropertyGroupDescription('category'),
      new PropertyGroupDescription('subCategory')]
    });
 const chart = new FlexChart('#theChart', {
    itemsSource: view,
    bindingX: 'product',
       series: [ { binding:'sales' } ],
       axisX: { groupsOptions: { display : AxisGroupsDisplay.Show } },
  });

If specified, the function takes two parameters:

• render engine: The IRenderEngine object to be used in formatting the labels.
• current label: An object with the following properties:
  • value: The value of the axis label to format.
  • text: The text to use in the label.
  • pos: The position in control coordinates at which the label is to be rendered.
  • cls: The CSS class to be applied to the label.

The function returns the label parameters of labels for which properties are modified.

For example:

chart.axisY.itemFormatter = function(engine, label) {
    if (label.val > 5){
        engine.textFill = 'red'; // red text
        label.cls = null; // no default CSS
     }
    return label;
}

Names of the properties are specified by the Axis.binding property.

For example:

 // default value for Axis.binding is 'value,text'
 chart.axisX.itemsSource = [ { value:1, text:'one' }, { value:2, text:'two' } ];

By default the labels are centered. The supported values are 'left' and 'right for the X-axis, 'top' and 'bottom' for the Y-axis.

The angle is measured in degrees with valid values ranging from -90 to 90.

The default value for this property is false.

The default value for this property is false.

The default value for this property is 5 pixels.

The default value for this property is true.

If the base is not specified the axis uses a linear scale.

Use the logBase property to spread data that is clustered around the origin. This is common in several financial and economic data sets.

If the axis contains date values, then the units are expressed in days.

The value can be a number or a Date object (for time-based data).

The default value for this property is null, which causes the chart to calculate the maximum value based on the data.

The value can be a number or a Date object (for time-based data).

The default value for this property is null, which causes the chart to calculate the minimum value based on the data.

If the axis contains date values, then the units are expressed in days. If the logBase value is set on the axis, then the minorUnit value would be increased by the exponential multiple of logBase Value when caculating minor unit values between next major unit values.

The default value for this property is OverlappingLabels.Auto.

The default value for this property is false.