Databases Reference
In-Depth Information
HTML Charts
HTML Charts are useful when you don't have much bandwidth, you only need a very basic chart, or the
device that runs the chart isn't capable of rendering Flash content. Having said that, the HTML charts
that come with APEX are so minimal that they are hardly ever used; nevertheless, we'll cover them briefly
so you understand the concepts when you need them, as they are very different from Flash charts.
Using the HTML Charts Wizard
To add an HTML chart to your page, run the Create Region wizard and select Chart - HTML Chart.
Follow the rest of the wizard. There's actually only one important screen in that wizard which defines
the entire chart: the Source screen (see Figure 2-1). There you enter the query to retrieve the data for the
chart to use, and you define how you want the chart to look. That HTML charts are very limited is
demonstrated by the number of chart types you can use. You can only select whether the chart will show
horizontal or vertical bars. Also, there are only three possible scales for the charts: 200, 400, and 600.
Figure 2-1.
HTML Chart Source
The query is always in the same format:
