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NB. It is required that the timeSeriesType of output variables are set to temporary.
NB. For 2011_02 only the UserSimpleFunction is supported and tested as a transformation that can be used.
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<variable>
<variableId>Observation</variableId>
<timeSeriesSet>
<moduleInstanceId>Afgeleide_Twentekanalen</moduleInstanceId>
<valueType>scalar</valueType>
<parameterId>H.meting</parameterId>
<locationSetId>Hydro_LMW_TK_H</locationSetId>
<timeSeriesType>external historical</timeSeriesType>
<timeStep unit="hour"/>
<relativeViewPeriod unit="hour" start="-1" end="0"/>
<readWriteMode>read only</readWriteMode>
</timeSeriesSet>
</variable>
<variable>
<variableId>Correction</variableId>
<timeSeriesSet>
<moduleInstanceId>Afgeleide_Twentekanalen</moduleInstanceId>
<valueType>scalar</valueType>
<parameterId>H.meting</parameterId>
<locationSetId>Hydro_LMW_TK_H</locationSetId>
<timeSeriesType>external historical</timeSeriesType>
<timeStep unit="hour"/>
<relativeViewPeriod unit="hour" start="-1" end="0"/>
<readWriteMode>read only</readWriteMode>
</timeSeriesSet>
</variable>
<variable>
<variableId>Observation_minus_correction</variableId>
<timeSeriesSet>
<moduleInstanceId>Afgeleide_Twentekanalen</moduleInstanceId>
<valueType>scalar</valueType>
<parameterId>H.meting</parameterId>
<locationSetId>Hydro_LMW_TK_H</locationSetId>
<timeSeriesType>temporary</timeSeriesType>
<timeStep unit="hour"/>
<relativeViewPeriod unit="hour" start="-1" end="0"/>
<readWriteMode>add originals</readWriteMode>
<synchLevel>9</synchLevel>
</timeSeriesSet>
</variable>
<transformation id="UserSimpleTransformationTest1">
<user>
<simple>
<expression>Observation - Correction</expression>
<outputVariable>
<variableId>Observation_minus_correction</variableId>
</outputVariable>
</simple>
</user>
</transformation>
...
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Known Issues
When using Delft-FEWS the configuration can be present as files on the file system or can be contained in a local data store. The svg files that are used for the scada display work in both cases. However, if the svg files refer to separate image files, then the scada display can only display these images if the image files are present as files on the file system. If these separate image files are contained in a local data store, then they cannot be displayed in the scada display. Therefore, when using separate image files, make sure that the configuration is present as files on the file system. If this is not possible, then it is possible to choose from two different workarounds:
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