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Transformation: | Sum |
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Transformation Group: | Accumulation |
Description: | Calculates for each timestep in the output period, the accumulated sum of the input values. In case the input is instantaneous or mean and the output is accumulation, then the sum is multiplied by the duration of the input time step in seconds. Each output value is the sum of the corresponding input value and all previous input values. |
Hydrological Information
Purpose and use of Transformation: | This transformation can for instance be used to report the accumulated sum of the discharge per month. |
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<?xml version="1.0" encoding="UTF-8"?>
<transformationModule version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.wldelft.nl/fews" xsi:schemaLocation="http://www.wldelft.nl/fews http://fews.wldelft.nl/schemas/version1.0/transformationModule.xsd">
<!-- input variables -->
<variable>
<variableId>input</variableId>
<timeSeriesSet>
<moduleInstanceId>AccumulationSum</moduleInstanceId>
<valueType>scalar</valueType>
<parameterId>H.m</parameterId>
<locationId>H-2001</locationId>
<timeSeriesType>external historical</timeSeriesType>
<timeStep unit="day"/>
<relativeViewPeriod unit="day" start="0" end="30"/>
<readWriteMode>editing visible to all future task runs</readWriteMode>
</timeSeriesSet>
</variable>
<!-- output variables -->
<variable>
<variableId>output</variableId>
<timeSeriesSet>
<moduleInstanceId>AccumulationSum</moduleInstanceId>
<valueType>scalar</valueType>
<parameterId>Q.m</parameterId>
<locationId>H-2001</locationId>
<timeSeriesType>external historical</timeSeriesType>
<timeStep unit="day"/>
<relativeViewPeriod unit="day" start="5" end="25"/>
<readWriteMode>add originals</readWriteMode>
</timeSeriesSet>
</variable>
<!-- transformations -->
<transformation id="accumulation sum">
<accumulation>
<sum>
<inputVariable>
<variableId>input</variableId>
</inputVariable>
<ignoreMissing>false</ignoreMissing>
<outputVariable>
<variableId>output</variableId>
</outputVariable>
</sum>
</accumulation>
</transformation>
</transformationModule>
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