The line chart widget is used to display a series of values over time, and can display multiple tags from multiple data sources or stacks. Choosing a time frame appropriate to your data and use case is key, as these will determine how densely packed your data points appear on the chart. Data above a certain level of density will automatically be decimated for ease of visual consumption. This widget is commonly used to reveal data trends over hours or days, and to compare the behavior of multiple devices running simultaneously by layering multiple tags in a single chart.
Examples gallery
Default view display a single tag's values over a multi-day timeframe
A single tag with with a visual 'threshold' added for easy evaluation of data against a target value
Two different tags plotted over a five-minute timeframe, with mouse hover showing additional detail for a specific data point
Common applications
Visualize peaks and valleys in power consumption across multiple machines to reveal patterns of extended idleness.
Display changes in air pressure over long time periods, making slow leaks easy to identify and repair.
Configuration Options
Property
Options
Description
Time Frame
Determine the time window of data to be displayed in the widget. Note that large quantities of data will be displayed in decimated format for visualization purposes.
Moving
Continuously update the current view with the most recent data.
Fixed
Display data within a fixed time window, established from a specific date and time.
Refresh Interval
Determines the frequency with which the widget will refresh the displayed data. Set longer refresh times for widgets that are not checked often.
Auto
Sets the refresh rate automatically, based on the incoming signal.
Set
Specify a refresh rate in seconds, minutes, or hours.
Y-Axis
Define the minimum and maximum values of the Y-Axis. Data above or below these values will be cut off.
Auto
Automatically define the minimum and maximum values of the Y-Axis based on incoming data.
Set
Specify fixed minimum and maximum values for the Y-Axis.
Scale and Offset
Modify the raw data to either scale up the value by a multiplier, or offset the value by a fixed amount. Used to convert units (eg, watts to kW), or to correlate data streams with drastically different scales (eg, °F vs vibrations per second).
Raw
No adjustment.
Custom
Specify a scale factor and/or offset amount.
Display Options
Property
Description
Tag
Select the tag or state to visually configure from the list of incoming data. States that have been configured at the tag level will be show in the format, ‘StackName:TagName.State’
Condition
Not currently implemented for this widget type.
Trigger Value
Define a y-axis value at which to add a dotted ‘threshold’ line.
Color
Select a color in which to display the line created by the configured Trigger Value.
Default view display a single tag's values over a multi-day timeframe
Configuration Options
Display Options