TrendAnalysis is a tool to display historical data that uses Tags provided by the automatic history service of Elipse E3. The main features of a TrendAnalysis are the following:

•Capacity for large amounts of data

•Clear view of the time scale for any level of zoom

•Scroll and zoom by scale or by area

•Search for previous values, nearest values, or interpolated values

•Displays updated automatically

•View the quality of a point and indication of points with null values

•Permanent fitting of Pens by axis

This tool is accessible using the Elipse E3 Viewer methods GetTrendAnalysis, to create and configure, and ShowTrendAnalysis, to view. The resulting window can be viewed on the next figures.

Displays tab

Bookmarks tab

Connections tab

The configuration options of the tabs available on the TrendAnalysis window are described on the next topics.