Variables-Based Charts

A chart may be based on server variable values. Depending on the chart component properties, it may show the history of variable value changes or monitor variable changes in real-time. In this case, the chart will update dynamically.

Variable-based mode is supported for the following charts:

• XY Line Chart
• XY Area Chart
• XY Bar Chart

A chart based on variable values is called a Time Chart. It shows the changes in a certain value over time. The value is calculated using an expression that contains references to the Data Table containing variable value.

The domain axis of a variables-based chart must be of Date Axis type.

See source variables for more information about properties of variable-based data series.

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