## Uses of Interface
com.orsoncharts.data.ItemKey

- Packages that use ItemKey
  Package | Description
  --- | ---
  com.orsoncharts.data | Core data structures used as the building blocks for datasets in Orson Charts.
  com.orsoncharts.data.xyz | Datasets that can be used by the `XYZPlot` class.
  com.orsoncharts.plot | Standard plot types (`PiePlot3D`, `CategoryPlot3D` and `XYZPlot`) that can be used with the `Chart3D` class.

- - ### Uses of ItemKey in com.orsoncharts.data

    Classes in com.orsoncharts.data that implement ItemKey
    Modifier and Type | Class and Description
    --- | ---
    `class` | `KeyedValues3DItemKey<S extends java.lang.Comparable<S>,R extends java.lang.Comparable<R>,C extends java.lang.Comparable<C>>` An object that references one data item in a `KeyedValues3D` data structure.
    `class` | `KeyedValuesItemKey` An object that references one data item in a `KeyedValues3D` data structure.

  - ### Uses of ItemKey in com.orsoncharts.data.xyz

    Classes in com.orsoncharts.data.xyz that implement ItemKey
    Modifier and Type | Class and Description
    --- | ---
    `class` | `XYZItemKey<S extends java.lang.Comparable<S>>` An object that references one data item in an `XYZDataset`.

  - ### Uses of ItemKey in com.orsoncharts.plot

    Methods in com.orsoncharts.plot with parameters of type ItemKey
    Modifier and Type | Method and Description
    --- | ---
    `java.lang.String` | XYZPlot.`generateToolTipText(ItemKey itemKey)`
    `java.lang.String` | Plot3D.`generateToolTipText(ItemKey itemKey)` Returns the tool tip text for the specified data item, or `null` if no tool tip is required.
    `java.lang.String` | PiePlot3D.`generateToolTipText(ItemKey itemKey)`
    `java.lang.String` | CategoryPlot3D.`generateToolTipText(ItemKey itemKey)`
    `abstract java.lang.String` | AbstractPlot3D.`generateToolTipText(ItemKey itemKey)` Returns the tool tip text for the specified data item, or `null` if no tool tip is required.