History Trend Display

The History Trend display visualizes historical data in a trend view, based on archived raw data of the selected time frame which is aggregated by the selected algorithm on the server side. Multiple trending objects are supported with a large variety of configuration and display options. The HistoryTrend display can be opened from the Open menu (shortcut Ctrl+H) or by right-clicking on an object in one of the model panels, selecting Add item to… > History Trend from the context menu and choosing a time period from the list or using the Time Period Settings dialog (shortcut Alt+H).

A detailed tutorial on working with the HistoryTrend display and it’s features is available in the Working with the History Trend page.

All OPC UA aggregates are supported, plus inmation specific ones for best trending results. Refer to the OPC UA spec for a detailed explanation of the available aggregate algorithms.

Figure 1. History Trend Display

Table 1. History Trend Display Menu Bar Options
Element	Shortcut	Action
	`Ctrl`+`Shift`+`S`	Calls the Save Display dialog
	-	Calls the Open Display dialog
	-	Calls the Settings dialog. See the History Trend Settings for more information on configuring the settings.
	-	Exports the current content of the trend into a file (CSV, MS Excel, JSON) and opens the file automatically
	`Ctrl`+`Z`	Undo action
	`Ctrl`+`Y`	Redo action
	-	Shift trend to left (backwards in time)
	-	Shift trend to right (forwards in time)
	`F6`	Open Select Time Period Setting dialog. See the Changing Time Period section for more details on using the Time Period Setting dialog.
	`F5`	Refresh trend data based on current Time Period Setting
	-	Play/Pause auto updating
	-	Switch Y-axis types
	Middle mouse click	Add cursor line
	-	Switch cursor line legend type
	`Ctrl`+`Shift`+`O`	Show/Hide X-axis zoom bar preview