Using the Display Component

The display component is the workhorse class of the chart system. The display graphs the data according to the selected graph type and axis style. This generally involves drawing appropriately scaled axes with labels, tick marks, and grid lines.

In our discussion of the display component, the focus is on selecting a chart and axis type and configuring the axes as desired. Methods for modifying the appearance of the various lines, wigets, bars, and pie wedges that represent the data items are described in later sections of this chapter.

Techniques for creating your own custom chart types or for changing the standard Objective Chart behavior by subclassing are discussed in Chapter 16, “Chart Extensions.”