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Additional time series can be configured in filters. These series are found via attribute functions (in the <locationFunctionEquals selected=@ATTRIBUTE_ID_A@ additional="@ATTRIBUTE_ID_B@"> element) of the selected time series and the additional time series. When the attribute functions evaluate to the same value the additional time series are added as invisible by default. When additional time series are available the icon of the visibility dialog will change which shows that invisible time series are available and can be made visible.
When it is desired that the additional time series are added only for the same locations then all locations should have an attribute that is equal to their id for example LOC_ID and the locationFunctionEqualselement can be used as follows:
<locationFunctionEquals selected=@LOC_ID@ additional="@LOC_ID@">
In the example below locationFunctionEquals selected="@LOC_ID@" additional="@AFGB_NAAR@"/> is used which will show all a timeseries from the additional time series set where the location has an attribute value AFGB_NAAR which equals the LOC_ID attribute of the shown location of the normal time series set, which can be multiple or even 0.
When the attribute functions evaluate to the same value the additional time series are added as invisible by default. When additional time series are available the icon of the visibility dialog will change which shows that invisible time series are available and can be made visible. Each additional time series element can be given a name, this name will be used as prefix in the legend of the time series and as GroupNode label in the visibility dialog.
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