Trends

With Trender you can view and analyze historical information for any telemetry point in your system. Trends for a telemetry point can be viewed singly or combined with other points. To help you analyze your data, trends can be zoomed in to display a time span of one (1) minute and zoomed out to show a span of 30 days. You can also pan backward and forward in time.

Easy to Use Interface

Trender's user friendly interface makes creating a trend an easy process. Simply open Trender and click the Add Address icon (represented by a star) to select the point you want to view. A trend line showing activity over the last hour is drawn. Add additional points if desired; up to 12 addresses can be added to a single trend. Multiple trends can be viewed separately or combined into a single panel.

  • The trend's tme span, current date and time, and end date and time are displayed just below the menu/icon bar.
  • The point's name and address are displayed on the left below the time span.
  • The point's value is shown on the right below the end date and time.

When you move your mouse over the trend, the date shown in the center of the window changes to correspond to the position of your mouse pointer. The value that corresponds to that date and time is displayed in the top-right corner just below the end date (6 mph in the screenshot below).

Use the zoom and pan functions to navigate through the data. Zoom in to see more detail; zoom out to see more data; pan backwards and forward in time.

To change options (range; smoothing; line and value color; reference lines/values; grid display), click the trend and then click the Information icon (circled in the screenshot above).

Zoom and Pan

Trender features tools for zooming in and out (to see more detail or more data) and for panning backward and forward in time.

  • Zoom in to see more detail. Each time the Zoom In icon is clicked, the length of time being displayed is cut in half. You can also zoom in using the mouse scroll button. Roll the mouse wheel forward (away from you). Minimum time span is one minute.
  • Zoom out to see more data. Each time the Zoom Out icon is clicked, the length of time being displayed is doubled. You can also zoom out using the mouse scroll button. Roll the mouse wheel backward (towards you). Maximum time span is 30 days and/or 25,000 data samples.
  • Pan backward in time. Each time the Pan Backward icon is clicked, the time span being displayed is moved backward by a length of time equivalent to what is currently being shown. You can also pan backward by clicking the left side of the trend and dragging your mouse to the right.
  • Pan forward in time. Each time the Pan Forward icon is clicked, the time span being displayed is moved forward by a length of time equivalent to what is currently being shown. You can also pan forward by clicking the right side of the trend and dragging your mouse to the left.

Trend zoomed in to show 15 minutes of data

Trend zoomed out to show 4 hours of data

Smoothing Trends

The Interpolate Values option creates a smooth trend by estimating the values between each sample.

Trend with Interpolate Values option selected

Trend without Interpolate Values option selected

Auto Range

The Auto Range option sets the upper and lower range of the trend to the minimum and maximum values recorded for the point during the current time span. These are not the minimum and maximum possible values for the point (as set in Configuration Editor), but the minimum and maximum actual recorded values for the time span. This setting causes the trend to fill the entire vertical area of the trend.

You can define your own range for the trend by clearing the Auto Range option and entering your own values in the Min and Max boxes.

Full Screen Mode

To make full use of your monitor's display, you can use the "Detach Trender" command to open Trender in a new window and view Trender full-screen mode.

Saving Trends

Users with proper permissions can save trends that are viewed frequently.