Rockwell Automation FactoryTalk Historian SE ProcessBook 3.2 User Guide - Manual (Page 137)

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Visualize Data with Symbols
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Drag Zoom
Drag Zoom lets you contract the time scale of a trend.
1. With the Run mode pointer, click an area in the trend at which you
want a closer look.
2. Drag the pointer diagonally to create a rectangle.
3. When you release the mouse, the trend displays the data within the
rectangle.
Trend Zoom 2x In or Out
Click the Zoom In or Out button at the bottom of a trend to reduce or
expand the time range of that trend by a factor of 2. In other words, if your
time range is 8 hours, Trend Zoom 2x In divides the time range by 2 and
displays the trend for a 4 hour time period. Trend Zoom 2x Out multiplies
the time range by 2 and displays the trend for a 16 hour time period.
You can remove changes to the time range by clicking the Revert button
.
If a trend is too small these buttons may not appear. Double-click a trend to
expand its size and display hidden buttons.
If there are no trend cursors, the Trend Zoom 2x command zooms in or
out of the last portion of the time period. For example, if the initial time
range is 60 minutes and you select Trend Zoom 2x In, the trend displays
the last 30 minutes. Trend Zoom 2x Out displays 120 minutes adding 60
minutes to the beginning of the trend.
When a trend cursor is displayed, the command uses the trend cursor as the
center of the zoomed trend. If several cursors are used, the last one set is