Configuration

A TrendLineChart can be configured as follows:

1. Define the Y-axes of the coordinate system with the help of the dialog "YAxis Definitions" of the attribute "YAxis".

1.1. Define the desired number of Y-axes to which the symbols in the following are to be assigned.

1.2. Adjust the settings of the Y-axis/axes if necessary.

2. Define the variables to be displayed in the trend element using the attribute "LineGraphDescriptions" from the "Common" category.

2.1. Add a Line Graph Description for each of the variables.

2.2. Select the appropriate variable in each description under "Symbol".

It is only possible to select variables for which historization has been activated beforehand.

2.3. Under "Y-Axis ID", select the Y-axis to which the symbol is to be assigned. If you don't select a Y-axis, an automatically scaling Y-axis bearing the name of the symbol will be generated.

3. Adapt the start and end point of the period to be observed.

Example: Last ten minutes in the past:

3.1. Set the value of the attribute "Start" of the category "Common" to "PT10M".

4. Adapt the X-axis scaling by setting the attribute "XMainTickSteps" of the category "X-Axis" to "5".

5. Activate the attribute "ShowMenubar" of the category "Menubar".

Example: Trend Line Chart