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When using coefficient set functions (available since build 30246), the value elements can contain tags between "@" signs (e.g. "@NUMBER@") that refer to location attributes that are defined in the locationSets configuration file. The tags are replaced by actual values. These values can be different for different locations and time periods. See 22 Locations and attributes defined in CSV files, Shape-DBF files or external tables for more information.
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The example below uses coefficientSetFunctions (available since build 30246, i.e. since stable build 2011.01). Here 'X' is a reference to a variable and 'a', 'b' and 'c' are references to coefficients. Here the coefficients are defined in coefficientSetFunctions, where @coef_a@ , @coef_b@ and @coef_c@ refer to location number attributes that are defined in the locationSets configuration file.
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<variable> <variableId>X</variableId> <timeSeriesSet> <moduleInstanceId>UserSimpleWithCoefficientSetFunctionsTest</moduleInstanceId> <valueType>scalar</valueType> <parameterId>Q.m</parameterId> <locationId>locationWithAttributes4</locationId> <timeSeriesType>external historical</timeSeriesType> <timeStep unit="day"/> <relativeViewPeriod unit="day" start="0" end="9"/> <readWriteMode>editing visible to all future task runs</readWriteMode> </timeSeriesSet> </variable> <variable> <variableId>Y</variableId> <timeSeriesSet> <moduleInstanceId>UserSimpleWithCoefficientSetFunctionsTest</moduleInstanceId> <valueType>scalar</valueType> <parameterId>Q.tra</parameterId> <locationId>locationWithAttributes4</locationId> <timeSeriesType>external historical</timeSeriesType> <timeStep unit="day"/> <relativeViewPeriod unit="day" start="0" end="9"/> <readWriteMode>add originals</readWriteMode> </timeSeriesSet> </variable> <transformation id="user simple with coefficient set functions test"> <user> <simple> <expression>a*(X^2) + b*X + c</expression> <coefficientSetFunctions> <coefficient id="a" value="<at:var at:name="coef_a" />"/> <coefficient id="b" value="<at:var at:name="coef_b" />"/> <coefficient id="c" value="<at:var at:name="coef_c" />"/> </coefficientSetFunctions> <outputVariable> <variableId>Y</variableId> </outputVariable> </simple> </user> </transformation> |
You can use an attribute of a related location by using this format: @<relationID>:<attribute>@.