Labels annotate data points. As a degenerate case they can be used to place text on a chart without drawing a point. Labels are controlled by the value of the attribute LabelType in a Data node.

Multiline labels are allowed.

The attribute LabelType takes on one of the following values:

The AxisXYZ node is the basis of both the scatter chart types and surface chart. Its parent node must be the root Chart3D node.

When an AxisXYZ node is created, it creates three Axis3D nodes. They can be obtained by using the methods AxisXYZ.getAxisX() and AxisXYZ.getAxisY()and AxisXYZ.getAxisZ(). Each of the Axis3D nodes in turn creates additional child nodes, as seen in the diagram below.

Accessor methods can be chained together, so the x-axis line can be retrieved using

The code to set the x-axis line to blue is

The layout of an AxisXYZ chart is controlled by the attributes Window and Number.

Window is a double array-valued attribute that contains the axis limits. Its value is (min, max).

Number is an integer-valued attribute that contains the number of major tick marks along an axis.

The x-, y- and z-axes may be linear or logarithmic, as specified by the Transform attribute. This attribute can have the values:

Autoscaling is used to automatically determine the attribute Window (the range of numbers along an axis) and the attribute Number (the number of major tick marks). The goal is to adjust the attributes so that the data fits on the axes and the axes have “nice” numbers as labels.

Autoscaling is done in two phases. In the first (“input”) phase the actual range is determined. In the second (“output”) phase chart attributes are updated.

The action of the input phase is controlled by the value of attribute AutoscaleInput in the axis node. It can have one of three values.

The value of the AutoscaleOutput attribute can be the bitwise combination of the following values.

The default is AUTOSCALE_NUMBER ∣ AUTOSCALE_WINDOW; both the attributes Number and Window are adjusted.