The history chart view plots the data of the selected history log along x and y axes. This is the default view of the history, so if you double-click on a history in the nav sidebar, the history chart view will appear. An example of the history chart view is shown in Figure 144.

Figure 144. History chart view

The history chart view contains the standard chart controls and options to help you customize and view the data, as described in Chart controls and options. In addition to these standard controls, the history chart view has the following additional buttons (also available on the toolbar):

Charting in the browser

Starting in NiagaraAX-3.3, the Hx charting feature is redesigned to work in the browser without using any plug-ins. The following illustration shows a History Chart in the browser using Hx (no plugin).

Figure 145. Displaying a History Chart in the browser with Hx

Hx charts essentially look and work the same in all target media except for a the following differences:

• The default time range for histories is now "Time Range" which is only the bounds of the history data. This is the default in workbench, so now history charts should look the same by default. You cannot however modify this time range. The existing options (Today, Last Month, etc.) are still available.

• Pie charts do not render in Microsoft® Internet Explorer® (IE)

• You may see slower render times in IE since the <canvas> tag has to be emulated using JavaScript and VML.