Retrieval styles for trend

The Trend application allows you to use "retrieval styles" that automatically switch retrieval modes for trend tags based on the trend duration and/or tag type. For example, you could configure a style that uses delta retrieval for short time periods and best-fit retrieval for longer periods. This helps you to balance response speed and accuracy. Also, retrieval styles allow you to calculate moving averages and retrieve data from the Historian’s summary tables.