What is a scale
A scale is displayed within a chart by a dedicated optional scale object. The base class used to represent a scale is the
IlvScale class.
By default, scales are automatically created when a chart is constructed. You can control if scales are automatically created by means of the following constructor:
IlvChart(int type, boolean withScales)
Scales might be defined as a graphical representation of a chart axis. As such, a scale is always associated with an
IlvAxis instance. To determine the axis that has to be associated with a scale when the scale is added to a chart, use the following methods:
setXScale associates the specified scale with the
x-axis.
setYScale associates the specified scale with the
y-axis of the given index.
You can retrieve the scale associated with an axis from the axis index using the following methods:
NOTE Since scales are optional components, these methods may return null if no scale has been previously set on the specified axis.
A scale is composed of the following elements:
An
axis representation, which depends on the chart projection (could be a line or an arc).
Major ticks, the marks drawn on the axis at each step of the scale.
Steps labels, drawn next to the major ticks. These labels indicate the values of the coordinate represented by the scale.
Minor ticks, the marks drawn on the axis at each substep of the scale.
A
title, which can be placed anywhere along the axis representation.
Scales Structure
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