This tag specifies that the nodes can be colored according to their [attr] attribute. In this example, values of [attr] from 0 to 40 will correspond to a hue gradient from 60 to 360. The default value of "true" specifies that this coloring will be enabled each time the chart is opened.
Specifies how each dataset should appear in the list.
Required if there is more than one dataset.
Node tags
Nodes should be represented by nested <node> tags. The hierarchy should start with a single <node> to serve as the root.
The only required attributes are name and the magnitude attribute (as specified in the <magnitude> tag). The magnitude of a node has to be at least the sum of the magnitudes of nodes within it.
To create multiple datasets, the value of attributes can be comma-separated lists. Attributes that have a single value will use that value for all datasets.