Setting General Properties of a Chart Layout Object

The following properties are defined for a layout object:

Property	Methods	Default Value
Areas Computation Properties
Graph and Data Display Areas Automatically Computed	isAutoLayout setAutoLayout	IlvTrue
Graph Area Automatically Computed	isAutoGraphArea setAutoGraphArea	IlvTrue
Data Display Area Automatically Computed	isAutoDataDisplayArea setAutoDataDisplayArea	IlvTrue
Areas Positioning Properties
Drawing Area Defined by:          Margins Between the     Chart Bounding Box and the     Drawing Area	getLeftMargin setLeftMargin      getRightMargin setRightMargin      getTopMargin setTopMargin      getBottomMargin setBottomMargin	0           0           0           0
Graph Area Defined by Hand Using:          Margins Between the     Drawing Area and the     Graph Area          A Rectangle Corresponding     to the Graph Area	getGraphAreaRelatively setGraphAreaRelatively           getGraphArea setGraphArea
Data Display Area Defined by Hand Using:          Margins Between the     Drawing Area and the     Data Display Area          A Rectangle Corresponding     to the Data Display Area	getDataDisplayAreaRelatively setDataDisplayAreaRelatively           getDataDisplayArea setDataDisplayArea

By default, the graph area and the data display area are automatically computed from the drawing area. However, the graph area or the data display area can be fixed by hand. If the graph area is fixed by hand, the data display area will be computed automatically from the fixed graph area. Similarly, if the data display area is fixed by hand, the graph area will be automatically computed from the fixed data display area.

Note Be careful when you fix the data display area by hand. If the specified data display area is not small enough, the computed graph area can be larger than the drawing area and thus a part of the drawing of the chart may be not visible on the screen.

You can fix the graph area or the data display area by hand in two ways:

• By specifying margins relative to the drawing area

This can be done by means of the setGraphAreaRelatively or setDataDisplayAreaRelatively methods. In this case, the area that is fixed will be updated if the drawing area is modified (for example when the margins between the drawing area and the chart bounding box are changed).

• By setting the rectangle corresponding to the area to be fixed directly

This can be done by means of the setGraphArea or setDataDisplayArea methods. In this case, the area that is fixed does not depend on the drawing area and is not updated when the drawing area is modified.