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Set of rules to allow selection of lows from an input time series.
Attributes
Requirements for definitions *In the configuration of low selections there are two choices for refining the selection:
- An attribute "
- totalNumberBeforeT0" must be defined. The value attribute defines the maximum number of lows to consider before T0.
- An attribute "
- totalNumberAfterT0" must be defined. The value attribute defines the maximum number of lows to consider
- after T0.
*or - An attribute "
- totalNumber" must be defined. The value
- attribute defines the maximum number of lows to consider.
The following two attributes are optional:
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<transformation id="lows function test">
<selection>
<lows>
<inputVariable>
<timeSeriesSet>
<moduleInstanceId>SelectionLowsFunctionTest</moduleInstanceId>
<valueType>scalar</valueType>
<parameterId>H.tidal</parameterId>
<locationId>H-2010</locationId>
<timeSeriesType>external historical</timeSeriesType>
<timeStep unit="minute" multiplier="15"/>
<relativeViewPeriod unit="day" start="0" end="365"/>
<readWriteMode>editing visible to all future task runs</readWriteMode>
</timeSeriesSet>
</inputVariable>
<lowsBeforeT0>0<<totalNumberBeforeT0>3</lowsBeforeT0>totalNumberBeforeT0>
<lowsAfterT0>15<<totalNumberAfterT0>4</lowsAfterT0>totalNumberAfterT0>
<totalNumberOfLows>0</totalNumberOfLows>
<skipJustBeforeT0>0</<skipJustBeforeT0>2</skipJustBeforeT0>
<skipJustAfterT0>5<<skipJustAfterT0>2</skipJustAfterT0>
<outputVariable>
<timeSeriesSet>
<moduleInstanceId>SelectionLowsFunctionTest</moduleInstanceId>
<valueType>scalar</valueType>
<parameterId>H.updated</parameterId>
<locationId>H-2010</locationId>
<timeSeriesType>external historical</timeSeriesType>
<timeStep unit="nonequidistant"/>
<relativeViewPeriod unit="day" start="-5" end="15"/>
<readWriteMode>add originals</readWriteMode>
</timeSeriesSet>
</outputVariable>
</lows>
</selection>
</transformation>
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In this example:
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- Only the last three lows before T0 and the first four lows after T0 are considered.
- The last first two lows just before T0 are skipped, leaving only the third last one.
- Similarly the first lows just after T0 are skipped, leaving the third and fourth ones.