How parts of a graph are represented

Graphs consist of parts: a title, a legend, and axes. Each of these parts has a set of display properties. These display properties are themselves stored as properties in a subobject (structure) of Graph called grDispAttr.

For example, graphs have a Title property, which specifies the text for the title. Graphs also have a property TitleDispAttr, of type grDispAttr, which itself contains properties that specify all the characteristics of the title text, such as the font, size, whether the text is italicized, and so on.

Similarly, graphs have axes, each of which also has a set of properties. These properties are stored in a subobject (structure) of Graph called grAxis. For example, graphs have a property Values, of type grAxis, which specifies the properties of the Value axis, such as whether to use auto scaling of values, the number of major and minor divisions, the axis label, and so on.

Here is a representation of the properties of a graph:

Graph

		int Height

		int Depth

		grGraphType GraphType

		boolean Border

		string Title

…

grDispAttr TitleDispAttr, LegendDispAttr, PieDispAttr

		string FaceName

		int TextSize

		boolean Italic

…

grAxis Values, Category, Series

		boolean AutoScale

		int MajorDivisions

		int MinorDivisions

		string Label

…